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Osteoporos IntDOI 10.1007/s00198-012-1958-1
A framework for the development of guidelinesfor the management of glucocorticoid-induced osteoporosis
S. Lekamwasam & J. D. Adachi & D. Agnusdei &J. Bilezikian & S. Boonen & F. Borgström & C. Cooper &A. Diez Perez & R. Eastell & L. C. Hofbauer & J. A. Kanis &B. L. Langdahl & O. Lesnyak & R. Lorenc &E. McCloskey & O. D. Messina & N. Napoli &B. Obermayer-Pietsch & S. H. Ralston & P. N. Sambrook &S. Silverman & M. Sosa & J. Stepan & G. Suppan &D. A. Wahl & J. E. Compston &Joint IOF-ECTS GIO Guidelines Working Group
Received: 23 December 2011 / Accepted: 13 February 2012
# International Osteoporosis Foundation and National Osteoporosis Foundation 2012
Osteoporosis Foundation and the European Calcified Tissue
Summary This paper provides a framework for the devel-
Society, which set up a joint Guideline Working Group at the
opment of national guidelines for the management of glu-
end of 2010.
cocorticoid-induced osteoporosis in men and women aged
Methods and results The epidemiology of GIO is reviewed.
18 years and over in whom oral glucocorticoid therapy is
Assessment of risk used a fracture probability-based ap-
considered for 3 months or longer.
proach, and intervention thresholds were based on 10-year
Introduction The need for updated guidelines for Europe and
probabilities using FRAX. The efficacy of intervention was
other parts of the world was recognised by the International
assessed by a systematic review.
These guidelines have been endorsed by the Committee of ScientificAdvisors of the IOF and the ECTS Board and Professional PracticeCommittee. An appendix to these guidelines can be found in Archivesof Osteoporosis (DOI
Department of Medicine, Faculty of Medicine,
Quantify Research and LIME/MMC, Karolinska Institutet,
Centre for Metabolic Bone Diseases,
Stockholm, Sweden
Division of Rheumatology, Department of Medicine,
MRC Lifecourse Epidemiology Unit, University of Southampton,
McMaster University,
Southampton General Hospital, Southampton and NIHR
Hamilton, ON, Canada
Musculoskeletal Biomedical Research Unit,Institute of Musculoskeletal Sciences, University of Oxford,
Eli Lilly and Co.,Florence, Italy
Hospital del Mar-IMIM-Universitat Autónoma,
College of Physicians and Surgeons, Columbia University,
R. Eastell E. McCloskey
Division of Gerontology and Geriatrics and Center for
Academic Unit of Bone Metabolism, University of Sheffield and
Musculoskeletal Research, Department of Experimental Medicine,
NIHR Musculoskeletal Biomedical Research Unit, Sheffield
Leuven University,
Teaching Hospitals NHS Trust,
Conclusions Guidance for glucocorticoid-induced osteopo-
early after therapy is initiated, emphasising the importance of
rosis is updated in the light of new treatments and methods
primary prevention of fracture in high-risk individuals ].
of assessment. National guidelines derived from this re-
Most currently available guidelines for the management of
source need to be tailored within the national healthcare
GIO were developed prior to the release of FRAX® and other
framework of each country.
risk assessment tools and the approval of newer pharmacolog-ical interventions for its management In 2010, the Amer-
Keywords Bone mineral density . Bone-protective therapy .
ican College of Rheumatology (ACR) revised its 2001
Fracture . FRAX . Glucocorticoids
recommendations to incorporate advances in risk assessmentand to include all currently approved treatments The needfor updated guidelines for Europe and other parts of the world
was recognised by the International Osteoporosis Foundation(IOF) and the European Calcified Tissue Society, which set up a
Osteoporosis is a common complication of glucocorticoid
joint Guideline Working Group at the end of 2010. The aim of
therapy and is associated with substantial morbidity. Although
this group was to provide a framework for the development of
awareness of the condition has grown in recent years, it
guidelines from which country-specific recommendations could
remains under-diagnosed and under-treated. Glucocorticoid-
be derived. The framework covers the management of GIO in
induced osteoporosis (GIO) has distinct characteristics; in
men and women aged 18 years or over, in whom continuous
particular, rapid bone loss and increased fracture risk occur
oral glucocorticoid therapy at any dose is considered for
Division of Endocrinology, Diabetes, and Bone Diseases,
University of Sydney-Royal North Shore Hospital,
Department of Medicine III,
St Leonards, Sydney, Australia
Dresden Technical University Medical Center,Dresden, Germany
Cedars-Sinai/University of California,
Centre for Metabolic Bone Diseases (WHO Collaborating Centre),
Los Angeles, CA, USA
University of Sheffield Medical School,Sheffield, UK
Investigation Group on Osteoporosis, Hospital University Insular,
Department of Endocrinology, Aarhus University Hospital,
Bone Metabolic Unit, University of Las Palmas de Gran Canaria,
Las Palmas de Gran Canaria, Canary Islands, Spain
O. LesnyakRussian Association on Osteoporosis,
Yekaterinburg, Russia
Institute of Rheumatology,Prague, Czech Republic
R. LorencDepartment of Biochemistry and Experimental Medicine,The Children's Memorial Health Institute,
Faculty of Medicine 1,Charles University,
Prague, Czech Republic
Department of Rheumatology, C. Argerich Hospital,Buenos Aires, Argentina
Action for Healthy Bones,
Division of Endocrinology, Campus Bio-Medico University,
B. Obermayer-Pietsch
J. E. Compston (*)
Division of Endocrinology and Metabolism,
International Osteoporosis Foundation,
Department of Internal Medicine, Medical University of Graz,
Nyon, Switzerland
S. H. RalstonRheumatic Diseases Unit, Molecular Medicine Centre,
Institute of Genetics and Molecular Medicine,
Department of Medicine,
Western General Hospital, University of Edinburgh,
Cambridge University Hospitals NHS Foundation Trust,
3 months or longer. All interventions approved for GIO world-
42,500 men and women from seven prospective cohorts
wide are included, and the content will be updated at intervals.
followed for 176,000 patient years, previous or current
The recommendations in this document are provided to
glucocorticoid use was associated with a significantly
aid management decisions for physicians in primary and
increased risk of any fracture, osteoporotic fracture or hip
secondary care but do not replace the need for physician
fracture, the highest gradients of risk being seen for hip
judgement in the care of individuals in clinical practice. It is
fracture. Increased fracture risk was seen at all ages from
recognised that guidance will vary between countries be-
50 years upwards and was similar in men and women
cause of differences in resources, availability and cost of
Following withdrawal of glucocorticoid therapy, fracture risk
treatments and health care policies.
decreases, consistent with the spontaneous improvement inBMD reported after successful treatment of Cushing's syn-drome. A residual risk remains, possibly related to the under-
Epidemiology of GIO
lying disorder for which glucocorticoids were prescribed.
Most of the available epidemiological data relate to oral
Oral glucocorticoids are prescribed for a wide variety of
glucocorticoid therapy given continuously for 3–6 months
medical disorders, most commonly musculoskeletal disor-
or longer. There is some evidence that high doses of inhaled
ders and obstructive pulmonary disease In a multina-
glucocorticoids may be associated with reduced BMD and a
tional population-based prospective observational study of
small increase in fracture risk [Increased fracture risk
60,393 postmenopausal women who had visited their pri-
has also been reported with intermittent oral glucocorticoid
mary care practice within the last 2 years, the Global Lon-
gitudinal Study of Osteoporosis in Women, up to 4.6% werecurrently taking oral glucocorticoids, depending on theircountry of origin [
Glucocorticoid receptors are expressed on various extraske-
Epidemiology of glucocorticoid-induced osteoporosis•
letal and skeletal cells. The pathogenesis of GIO is thought
Up to 4.6% of postmenopausal women are reported as currently
taking oral glucocorticoids.
to result from direct effects of exogenous glucocorticoids on
• Fracture risk increases during the first 3–6 months of glucocorticoid
bone cells and indirect effects mediated by altered calcium
therapy and decreases following their withdrawal.
handling by the kidneys and the gut, reduced production of
• An increase in fracture risk occurs with low doses and rises further
gonadal hormones and detrimental effects on the neuromus-
with increasing daily dose.
cular system, which may increase the risk of falls [
• The greatest increase in risk is seen for vertebral fracture; in patients
Through activation of their high-affinity receptors, gluco-
taking ≥7.5 mg/day prednisolone or its equivalent, a relative risk of
corticoids modify the biology of all three major bone cells,
5.18 (95% CI 4.25–6.31) has been reported.
osteoblasts, osteoclasts and osteocytes. While physiologicalconcentrations of glucocorticoids are indispensible for differ-
Data from the General Practice Research Database
entiation of mesenchymal stromal cells into osteoblasts in
(GPRD) in the UK have demonstrated that fracture risk is
vitro, exogenous glucocorticoids inhibit osteoblasts at several
increased even with relatively low daily doses (2.5–7.5 mg)
levels Thus, pluripotent mesenchymal stromal cells may
of prednisolone or its equivalent and rises further with
be shifted towards the adipocytic pathway at the cost of the
increasing daily dose [Although the cumulative dose
osteoblastic pathway when exposed to glucocorticoids
of glucocorticoids correlates strongly with bone loss
The most consistent skeletal effects of glucocorticoids are to
assessed by BMD measurements, the association with frac-
inhibit osteoblast function and to promote osteoblast apopto-
ture risk is weaker than that for daily dose ]. Increased
sis. Mechanisms involved are decreased osteoblastic produc-
fracture risk is seen within the first 3–6 months after starting
tion of bone anabolic factors insulin-like growth factor-1 and
glucocorticoids, the greatest risk being seen for vertebral
transforming growth factor beta, interference with the Wnt
fracture ]. In patients taking ≥7.5 mg/day prednisolone or
signalling pathway with upregulation of Wnt inhibitors such
its equivalent, the relative rate of vertebral fracture was 5.18
as Dickkopf-1 and sclerostin and alterations of the bone
(95% CI 4.25–6.31), compared to 2.27 (2.16–3.10) for non-
matrix composition by altered production of type 1 collagen
vertebral fracture. The high risk of vertebral fractures in
and overproduction of inhibitors of matrix mineralization
glucocorticoid-treated patients is also emphasised by the
, ]. In addition, apoptosis of osteoblasts and
results of a recent study in which 24% of glucocorticoid-
osteocytes is enhanced by glucocorticoids leading to a shorter
treated patients previously treated with alendronate or alfa-
life span of bone-forming and mechanosensing cells
calcidol developed new vertebral fractures during the 2.7-
Some of these pro-apoptotic effects of glucocorticoids may
year follow-up period [In a meta-analysis of data from
be prevented by PTH and by bisphosphonates ].
Effects on osteoclasts are somewhat controversial and
averaged (Table 1, Appendix; Archives of Osteoporosis
may involve both osteoblast-mediated and direct actions
. Glucocorticoids upregulate the ratio of receptoractivator of NF-κB ligand (RANKL) to osteoprotegerin by
Hand search of abstracts
osteoblasts, most likely as a direct consequence of sup-pressed osteoblast differentiation, which translates into
Meeting abstracts from 1 April 2009 to 31 Dec 2010 were
increased osteoclastogenesis , ]. Glucocorticoids also
hand searched. Abstracts of the annual meetings of the
interfere with the ruffled border of the osteoclast; in addition,
American College of Rheumatology, International Osteopo-
mice with a targeted deletion of the osteoclastic glucocorti-
rosis Foundation-European Congress on Clinical and Eco-
coid receptor were protected against suppression of bone
nomic Aspects of Osteoporosis, the European League
formation following glucocorticoid exposure, indicating that
Against Rheumatism, American Society for Bone and Min-
glucocorticoids signal through the osteoclast to modulate
eral Research, and European Calcified Tissue Society were
osteoblast function ]. It should be noted that these
searched for clinical trials that met the criteria described
concepts of pathogenesis are predominantly based on
above. The search identified eight abstracts.
observations made in preclinical models and have notbeen validated in humans.
Grading of recommendations
The grading of recommendations was derived as follows:
Methods and search strategy
Level of grade of evidence/type of evidence recommendation
Systematic search
Ia. Meta-analysis of RCTs/A
The systematic search published in the ACR guidelines was
Ib. At least one RCT/A
updated to include the period of 1 April 2009 to 31 December
IIa. At least one well-designed, controlled study but with-
2010. The systematic search for clinical trials in patients taking
out randomization/B
oral glucocorticoids was conducted in MEDLINE through
IIb. At least one well-designed, quasi-experimental study/B
PubMed using the search terms described below. Only the ap-
III. At least one well-designed, non-experimental descrip-
proved therapeutic agents agreed by the panel, etidronate, alen-
tive study (e.g. comparative studies, correlation studies,
dronate, risedronate, zoledronic acid, vitamin D
alfacalcidol, calcitriol, calcium, teriparatide and PTH, were in-
IV. Expert committee reports, opinions and/or experience
cluded in the search. In MEDLINE, both Free Text and MeSH
of respected authorities/C
search options were used. A similar search was performed in theCochrane Trial Registry (CENTRAL) to ensure the complete-
Assessment of fracture risk
ness of the search. Furthermore, the Clinical Queries option (withthe Broader and Sensitive filter) of PubMed was searched to
FRAX® is a computer-based algorithm
capture systematic reviews and randomized controlled trials
that calculates the 10-year probability of a
(RCTs). The PubMed search was limited to RCTs, controlled
major fracture (hip, clinical spine, humerus or wrist fracture)
clinical trials, systematic surveys and meta-analysis, age
and the 10-year probability of hip fracture –
(18 years or over) and publications in the English language. Only
Fracture probability differs markedly in different regions
studies with information on BMD and/or fracture and with a
of the world [so that FRAX is calibrated to those
minimum follow-up period of 6 months were included. Studies
countries where the epidemiology of fracture and death is
involving transplant recipients were excluded. Ninety-four
known (currently 40 countries). It is the recommended
articles were identified by the MEDLINE search, of which seven
method of risk assessment in an increasing number of guide-
met the criteria for inclusion. Eleven further articles were iden-
tified by the CENTRAL search of which one met the inclusioncriteria (see Table 1, Appendix; Archives of Osteoporosis DOI
Assessment of risk
A general approach to risk assessment is shown in Fig.
Quality rating of studies
]. The management process begins with the assessmentof fracture probability and the categorization of fracture risk
The quality of published studies was assessed using the
on the basis of age, sex, body mass index (BMI) and clinical
Jadad score ]. Studies were assessed independently by
risk factors. On this information alone, some patients at high
three members of the working group, and the scores were
risk may be offered treatment without recourse to BMD
testing. There will be other instances where the probability
For higher doses of prednisolone, greater upward adjust-
is so low that a decision not to treat can be made without
ment of fracture probability may be required. Data from the
BMD. The size of the intermediate category in Fig. will
GPRD indicate that in patients with a daily dose of 20 mg/day
vary in different countries. In countries that provide reim-
of prednisolone or its equivalent, the excess risk of non-
bursement for DXA, this will be a large category, whereas in
vertebral fracture was increased approximately threefold com-
a large number of other countries with limited or no access
pared to those taking ≤5 mg/day or its equivalent [] and that
to densitometry, the size of the intermediate group will
this risk increases further with even higher doses.
necessarily be small. In other countries (e.g. the UK), where
The same principles apply to other risk factors used in
provision for BMD testing is sub-optimal [the interme-
FRAX in that probability assessments need to be tempered
diate category will lie between the two extremes. The ratio-
by ancillary information of clinical relevance [Exam-
nale for the use of FRAX in the absence of access to BMD
ples include a high falls risk, multiple prior fractures, im-
or limited access has been recently reviewed ].
mobility and severe rheumatoid arthritis. Since spine BMDcannot be entered into FRAX, fracture risk might be under-
FRAX adjustment for dose of oral glucocorticoids
estimated in individuals in whom BMD is substantiallylower in the spine than in the hip. A simple procedure has
One of the limitations of FRAX is that use of oral gluco-
been described to incorporate the offset between spine and
corticoids is entered as a dichotomous risk factor (yes/no)
hip BMD in such cases that enhances prediction of both
and does not take into account the dose of glucocorticoids.
vertebral and major osteoporotic fracture risk [In addi-
Neither does it accommodate the duration of use, except that
tion, clinical, but not morphometric, vertebral fractures are
exposures of less than 3 months should not be entered ].
included in the major osteoporotic probabilities generated
For longer-term use, FRAX assumes an average risk, pro-
by FRAX, and the risk of all vertebral fractures may be
viding hazard ratios for an average dose and duration of
exposure to glucocorticoids []. As expected, higher-than-average daily doses of oral glucocorticoids (2.5–7.5 mgprednisolone or its equivalent) are associated with higherrisks of fracture while lower-than-average doses are associ-
Intervention thresholds
ated with lower risks [, ].
Recommendations for intervention thresholds in GIO arecontentious and have a weaker evidence base than in
Use of FRAX in glucocorticoid-induced osteoporosis
postmenopausal osteoporosis. The revised ACR guide-
• Oral glucocorticoid use is entered into FRAX as a dichotomous risk
lines recommend treatment in postmenopausal women
factor and does not take into account the daily dose or duration ofuse.
and men aged 50 years or older starting on oral gluco-
• FRAX assumes an average dose of prednisolone (2.5–7.5 mg/day or
corticoids with a FRAX-derived 10-year probability of
its equivalent) and may underestimate fracture risk in patients taking
major osteoporotic fracture of over 10 % and in those
higher doses and overestimate risk in those taking lower doses.
with a probability of less than 10 % if the daily dose of
• Using UK data, the average adjustments over all ages in
prednisolone or its equivalent is ≥7.5 mg/day. The
postmenopausal women and men aged ≥50 years are 0.65 for daily
threshold of >10 % in patients taking ≥7.5 mg/day is
doses <2.5 mg/day prednisolone or its equivalent and 1.20 for dailydoses ≥7.5 mg/day prednisolone or its equivalent for hip fracture,and 0.8 and 1.15, respectively, for major osteoporotic fracture.
• For high doses of glucocorticoids, greater upward adjustment of
fracture probability may be required.
Under certain assumptions, relatively simple arithmetic
procedures have been formulated which can be applied toconventional FRAX estimates of probabilities of hip fracture
and a major osteoporotic fracture to adjust the probability
assessment with knowledge of the dose of glucocorticoids(Table ) ]. For example, a woman aged 60 years from
the UK taking glucocorticoids for rheumatoid arthritis (noother risk factors and BMI of 24 kg/m2) has a 10-year
probability for a major fracture of 13%. If she is on a
higher-than-average dose of prednisolone (>7.5 mg daily orits equivalent), then the revised probability should be 15%
Fig. 1 Management algorithm for the assessment of individuals at risk
of fracture CRFs clinical risk factors
considerably lower than that used in postmenopausal osteo-
Table 1 Average adjustment of 10-year probabilities of a hip fractureor a major osteoporotic fracture in postmenopausal women and older
porosis (20%) [].
men according to dose of glucocorticoids
National guidelines for the management of GIO have
been published in some other countries including Canada,
Prednisolone equivalent
Average adjustment over all
Belgium, France, Japan, Italy, Spain and the UK [,
but in many countries, national guidelines are not
available. Approaches used to set intervention thresholds
depend critically on local factors such as reimbursement
policies, health economic assessment, willingness to pay
for health care in osteoporosis and access to DXA [,
Major osteoporotic fracture
, ]. For this reason, it is not possible or desirable
to recommend a unified intervention strategy.
In non-glucocorticoid-treated postmenopausal women
with osteoporosis, most guidelines recommend that womenwith a prior fragility fracture may be considered for inter-
Adapted from ], with kind permission from Springer Science+
vention without the necessity for a BMD test (other than to
Business Media B.V.
monitor treatment) , ]. In the UK, theintervention threshold in women without a prior fracture is
Clinical scenarios for glucocorticoid-induced osteoporosis
set at the age-specific fracture probability equivalent to
women with a prior fragility fracture ] and therefore riseswith age. Using this criterion, intervention thresholds will
Table shows several clinical scenarios applied to the
vary from country to country because the population risks of
assessment strategy of NOGG (limited access to BMD). At
fracture and death vary , ] (Table ).
an intervention threshold of around 20%, the majority of
An example of a strategy that has been adopted in the UK
patients aged ≥70 years and/or with a previous fracture
is given below. It is similar to strategies commonly applied
would be considered eligible for treatment. In addition,
in Europe in the context of postmenopausal osteoporosis,
those aged 50–70 years who are on high doses of glucocor-
but takes into account the marked variations in access to
ticoids could be considered eligible for treatment, depending
DXA in different European countries ]. The approach,
on the dose and other clinical risk factors. In the remaining
originally applied by the National Osteoporosis Guideline
situations, a T-score of approximately −1.5 or lower is
Group (NOGG) in the UK, has been validated –].
required. Similar recommendations are made for men, sincethe effectiveness and cost-effectiveness of intervention in
& If no access to DXA is available, assessment of fracture
men with osteoporosis are broadly similar to those of post-
probability is determined using FRAX and treatment
menopausal osteoporosis for an equivalent risk [,
considered for those in whom fracture probability lies
These recommendations make the plausible but untested
above the intervention threshold.
assumption that the independent contribution to fracture risk
& If access to DXA is available, the use of FRAX demands
of most diseases for which glucocorticoid therapy is pre-
not only consideration of the fracture probability at
scribed is similar to that of rheumatoid arthritis.
which to intervene (intervention threshold) but also thefracture probability for BMD testing (assessment thresh-
Indications for bone-protective therapy in postmenopausal women and
olds) []. Assessment thresholds for the UK are
men ≥50 years on glucocorticoid therapy
shown in Fig.
• Aged ≥70 years
& If access to DXA is limited, those with fracture proba-
• Previous fragility fracture or incident fragility fracture during
bilities above the lower assessment threshold but below
glucocorticoid therapy
the upper assessment threshold can be considered for
• High doses of glucocorticoids, depending on daily dose and presence
BMD testing and their fracture probability reassessed.
or absence of other clinical risk factors
Treatment can then be considered in those with a frac-
• BMD T-score ≤−1.5
ture probability above the intervention threshold.
& If unlimited access to DXA is available, all those with
fracture probabilities above the lower assessment thresh-old can be considered for BMD testing and their fracture
probability reassessed. Treatment can then be consideredin those with a fracture probability above the interven-
A full clinical history should be taken, including details of
tion threshold.
co-morbidity, glucocorticoid use (previous or ongoing,
Table 2 Examples of intervention thresholds (equivalent to the age-
Table 3 Clinical scenarios for women in the UK (BMI 024 kg/m2)
specific fracture probability in women with prior fragility fracture) as
showing the 10-year probability of a major fracture by age for a high
set by FRAX-based 10-year probability (in percent) of a major osteo-
dose of glucocorticoids (GC) (>7.5 mg/day) using the adjustment
porotic fracture in postmenopausal women with a previous fracture (no
factor [], an average dose of glucocorticoids (2.5–7.5 mg/day) in a
glucocorticoid treatment or other clinical risk factors, a body mass
woman with rheumatoid arthritis (RA), and an average dose of gluco-
index of 24 kg/m2 and without BMD) [
corticoids with a prior fracture (Fx)
dosage, duration and route of administration), fracture his-
The numbers in parentheses represent the approximate T-scores atwhich the probability would lie at or above the NOGG intervention
tory (type and trauma), alcohol intake, smoking, height loss,
threshold (FRAX version 3.4 for the UK)
family history of osteoporosis and hip fracture. The history
a Recommended BMD test
should include an assessment of dietary calcium intake,
b Recommended treatment
obtained either informally or using a food frequency ques-tionnaire. Height and weight should be measured. Routinebiochemical testing should be performed to exclude causes
considered in patients with back pain, documented loss of
of secondary osteoporosis other than glucocorticoid use
height or kyphosis, or low BMD.
including assessment of vitamin D status and renal function(Table ). Measurement of BMD by DXA at the spine andhip is generally recommended. Lateral imaging DXA with
Management of glucocorticoid-induced osteoporosis
vertebral fracture assessment (VFA) is of value in detecting
existing vertebral fractures ], but if this is not available,lateral X-rays of the thoracic and lumbar spine should be
General measures in the management of GIO
Certain general measures can be advocated in individualstaking glucocorticoids, although the evidence base for theireffects on fracture risk is weak (Table ). The dose ofglucocorticoids should be regularly reviewed and kept toa minimum. Alternative routes of administration (e.g.
topical, inhaled) or formulations (e.g. budesonide) may beconsidered, and in some situations, use of alternative immu-nosuppressive agents may enable reduction in the dose ofglucocorticoids. Adequate levels of dietary calcium intake,good nutrition and maintenance of a normal body weightshould be encouraged. Tobacco use and alcohol abuse shouldbe avoided, and appropriate levels of physical exercise shouldbe encouraged. Falls risk assessment and, where appropriate,advice to reduce the risk of falls should be performed in thoseat increased risk of falling.
Fig. 2 Assessment guidelines of the UK National Osteoporosis Guide-line Group based on the 10-year probability of a major fracture (in
percent). The dotted line denotes the intervention threshold. Whereassessment is made in the absence of BMD, a BMD test is recommen-
Although a number of interventions have been evaluated in
ded for individuals where the probability assessment lies in the mid-region. Adapted from ]
the management of GIO, the strength of evidence for their
Table 4 Investigations to ex-clude causes of secondary
Full blood count and ESR
Exclude anaemia; high ESR may suggest monoclonal
Creatinine, urea, eGFR
Exclude chronic kidney disease
Calcium, phosphate, alkaline phosphatase,
Exclude primary hyperparathyroidism, malignancy,
osteomalacia, Paget's disease
Liver function tests
Exclude chronic liver disease, alcohol abuse
Oestrogen, testosterone, LH, FSH
Exclude hypogonadisma
IgA anti-tissue transglutaminase antibody or IgA
Exclude coeliac disease
endomysial antibody
Immunoglobulins, Bence Jones Protein, serum
Exclude monoclonal gammopathy
free light chains
Exclude vitamin D deficiency
aNot required in women who are
Exclude hyperthyroidism
known to be postmenopausal
efficacy is weaker than that for postmenopausal osteoporo-
In the case of alfacalcidol , and calcitriol
sis, since fracture reduction has not been a primary end point
similar evidence exists for spine BMD, but data
of any study. This reflects the acceptance by regulatory
for effects on hip BMD are inconsistent. Evidence for ver-
authorities of bridging studies, using BMD, for agents pro-
tebral fracture reduction, albeit not as a primary end point,
posed for GIO that have been shown to reduce fractures in
was reported in placebo-controlled or comparator studies for
postmenopausal osteoporosis Fracture data in GIO
alendronate [etidronate [risedronate ] and ter-
studies are therefore only available as secondary end points
iparatide , ]. The lower grading for alendronate reflects
or as safety data. Studies in GIO are limited further by their
the omission, in the extension study, of patients who had
short duration and heterogeneity of trial populations with
fractured during the first year of the study. No data are
respect to age, sex, underlying disease, co-morbidities, con-
available for non-vertebral fractures or hip fractures.
current medications and the variable timing of intervention
Since no treatment studies were designed to demonstrate
in relation to initiation of glucocorticoid therapy. In addi-
fracture reduction and, with the exception of four studies
tion, the number of men and premenopausal women in these
, ], there are no head-to-head comparisons of
studies has generally been low, so the evidence for treatment
interventions, inferences about the relative efficacy of dif-
of these other groups is weak.
ferent treatments cannot be made. In the comparator studies,superiority of BMD change was shown for zoledronic acidover risedronate [Teriparatide was significantly more
Pharmacological interventions in glucocorticoid-induced osteoporosis•
effective than alendronate in increasing BMD and in reduc-
Bone-protective treatment should be started at the onset of gluco-
corticoid therapy in patients at increased risk of fracture.
ing vertebral fracture, although the latter was not a primary
• Alendronate, etidronate, risedronate, zoledronic acid and teriparatide
end point , ]. The weaker evidence for alfacalcidol and
are the front-line therapeutic options for the majority of patients.
calcitriol with respect to changes in hip BMD helps to
• If glucocorticoid therapy is stopped, withdrawal of bone-protective
establish bisphosphonates and teriparatide as the front-line
therapy may be considered, but if glucocorticoids are continued long
options for the majority of patients. In clinical practice, the
term, bone protection should be maintained.
• Adequate calcium intake should be achieved through dietary intake if
possible, with the use of supplements if necessary.
Table 5 General measures in the management of GIO
• An adequate vitamin D status should be maintained, using
supplements if required.
Table summarizes the grading of recommendation for
Reduce dose of glucocorticoid when possible
pharmacological interventions approved for management of
Consider glucocorticoid-sparing therapy
GIO. For the bisphosphonates, alendronate –], etidronate
Consider alternative route of glucocorticoid
], risedronate –] and zoledronic acid and for
the osteoanabolic, teriparatide, there is good evidence from
Advise good nutrition especially with calcium and
placebo-controlled or comparator studies of beneficial effects
Regular weight-bearing exercise
on spine and hip BMD , The wording of the indication
Avoid tobacco use and alcohol abuse
for GIO varies between countries, but in EU countries, no
Assess falls risk and give advice if appropriate
distinction is made between prevention and treatment.
Fig. 3 Postmenopausal womenand men aged ≥50 years
choice of treatment in individual patients will be mainly
withdrawal of bone protection may be considered with
influenced by cost and tolerability.
reassessment of fracture risk, preferably including a mea-
Because rapid bone loss and increased fracture risk occur
surement of BMD. In those who continue to take glucocor-
soon after the initiation of glucocorticoid treatment, bone-
ticoids long term, treatment should be continued. In patients
protective therapy should be started at the onset of gluco-
treated with teriparatide, anti-resorptive therapy should be
corticoid therapy in individuals at increased risk of fracture.
considered following the permitted treatment duration of
If glucocorticoid therapy is subsequently stopped,
24 months [].
Fig. 4 Premenopausal womenand men aged ≤50 years
Table 6 Grading of evidence for pharmacological interventions used
and active vitamin D metabolites were included and com-
in the management of GIO
pared with calcium alone or placebo [, ]. Both anal-
yses showed a beneficial effect of combination therapy on
BMD. In contrast, other outcomes including fracture inci-dence were not significantly affected. There is no evidence
that active vitamin D metabolites are more effective than
native vitamin D (cholecalciferol, vitamin D3) in preventing
bone loss or fractures in glucocorticoid-treated patients
]. However, the risk of developing hypercalcaemia
and hypercalciuria is higher with active metabolites.
Based on the available evidence, current UK guidelines
recommend an adequate calcium and vitamin D intake to allindividuals on glucocorticoids for three or more months
nae not adequately evaluateda
Similarly, the updated recommendations from the American
College of Rheumatology recommend a total daily calcium
Data inconsistent
intake of 1,200 to 1,500 mg with 800 to 1,000 IU (20–
Not a primary end point
25 μg) vitamin D for all patients starting glucocorticoidtherapy Although some recent studies have suggested
Calcium and vitamin D
an association between use of calcium and vitamin D sup-plementation and risk of cardiovascular disease, this
Because glucocorticoid therapy is associated with reduced
remains controversial , ]. Where possible, dietary
intestinal and renal calcium absorption and increased uri-
means should be used to achieve an adequate intake of
nary calcium excretion, increasing calcium intake seems a
calcium and the use of supplements reserved for individuals
logical approach []. However, in most studies in which
with low intakes.
calcium alone served as the control therapy, bone loss wasnot prevented by calcium supplementation. For instance,despite a daily dose of 500 mg [800 mg [] or even
Cost-effectiveness of the treatment of GIO
1,000 mg ] of calcium, lumbar spine BMD continued todecline in patients on at least 7.5 mg/day of prednisone (by
Although the cost-effectiveness of treatments for osteoporo-
2.8, 4.6 and 4.3 % over 12 months, respectively). These
sis has been assessed in a number of studies [few
findings suggest that calcium alone may not be sufficient
have specifically addressed GIO , –]. However, if
to prevent glucocorticoid-induced bone loss
the assumption is made that drugs provide similar efficacy
Calcium supplementation should be combined with vita-
and safety in GIO as observed for postmenopausal osteopo-
min D as patients on glucocorticoids commonly have vita-
rosis [], cost-effectiveness estimates for PMO can be
min D insufficiency ]. Combined calcium and vitamin
transferred to GIO at equivalent fracture risk.
D supplementation—either native vitamin D [or acti-
A pan-European study from 2004 estimated the cost-
vated vitamin D metabolites ]—was more effective in
effectiveness of branded alendronate in nine countries in
preserving BMD than either calcium alone or no therapy. In a
non-glucocorticoid-treated postmenopausal women [
2-year randomized trial in patients with rheumatoid arthritis
In this study, alendronate was shown to be cost saving
receiving a mean daily dose of 5.6 mg prednisone, patients on
compared to no treatment in women with osteoporosis (with
1,000 mg calcium and 500 IU (12.5 μg) vitamin D3 daily had
and without previous vertebral fracture) from the Nordic
significant gains in BMD (0.7 and 0.9% per year at the spine
countries (Norway, Sweden and Denmark). The cost-
and hip, respectively), while those on placebo lost BMD (at a
effectiveness of alendronate compared to no treatment was
yearly rate of 2.0 and 0.9%, respectively) ]. Similarly, in a
also within acceptable ranges in Belgium, France, Germany,
1-year randomized trial, patients receiving high doses of glu-
Italy, Spain and the UK. However, with the decreased price
cocorticoids (prednisone ≥30 mg per day) gained lumbar spine
of generic alendronate, analyses based on a branded drug
BMD 0.39% over 1 year when randomized to calcium 405 mg
price have become obsolete and would require an update.
plus alfacalcidol 1 μg daily. In contrast, patients randomized to
In a study from the UK by Kanis et al. [generic
calcium alone lost BMD at a rate of 5.7% ].
alendronate was shown to be cost effective in the prevention
Two meta-analyses have confirmed the beneficial effect
and treatment of fractures in postmenopausal women with a
of combined calcium and vitamin D in the prevention of
10-year fracture probability for a major fracture that
glucocorticoid-induced osteoporosis. In these analyses, both
exceeded 7.5%. Thus, the treatment scenarios envisaged
trials with calcium and native vitamin D and with calcium
by NOGG can be considered as cost effective (Table
Other drugs that are approved for GIO (risedronate, teripara-
glucocorticoid-treated patients who are at increased risk of
tide and zoledronic acid) are associated with higher cost-
effectiveness ratios compared to no treatment mainly due totheir higher price. A recent study by Borgström et al. [],
Osteonecrosis of the jaw
again conducted in a UK setting, showed that risedronatewas cost effective above a 10-year probability of 13% for a
An increased risk of osteonecrosis of the jaw (ONJ) has
major osteoporotic fracture. However, the cost-effectiveness
been reported in patients treated with bisphosphonates, par-
of different interventions will vary between countries due to
ticularly in those exposed to high doses of bisphosphonates
differences in drug costs, fracture risk, costs of treating
for treatment of skeletal malignancy. In patients treated with
fractures, utility estimates and willingness to pay.
the lower doses used for osteoporosis, however, the inci-dence of ONJ is very low (between 1/10,000 and 1/100,000person exposure years) Although glucocorticoid
Safety of treatments in GIO
therapy has been reported in some cases of bisphosphonate-associated ONJ, there is no evidence that ONJ is more
Treatment studies in GIO have generally been smaller and
common in bisphosphonate-treated patients taking gluco-
of shorter duration than those in postmenopausal osteopo-
corticoids than in those treated with bisphosphonates alone
rosis so that information on adverse effects, particularly
those occurring with long-term treatment, is relatively
In patients receiving treatment for GIO who are at in-
sparse. Adverse events might be expected to occur more
creased risk of fracture, therefore, the benefit/risk balance of
frequently in glucocorticoid-treated individuals because of
bisphosphonate therapy is strongly positive. However,
co-morbidities and co-medications. However, there is no
because of the well-established role of dental disease
positive evidence to indicate that the safety profile of
and trauma in the pathogenesis of ONJ, where possible,
bisphosphonates and other drugs used in GIO differs signif-
invasive dental procedures should be avoided in patients
icantly from that observed in women treated for postmeno-
taking bisphosphonates, and pre-existing severe dental
disease should be treated prior to initiation of bisphosph-onate therapy. In addition, patients should be instructedto maintain good oral health.
Atypical femoral fractures
Recently, concerns have arisen about a possible association
Bisphosphonates and pregnancy
between bisphosphonate use and atypical subtrochantericand femoral shaft fractures (AFFs) [, These frac-
The use of bisphosphonates in women of childbearing age
tures are rare, comprising approximately 1% of all hip and
raises potential concerns about fetal safety because of the
femoral fractures ], but carry a high morbidity. Al-
long half-life of bisphosphonates in bone and their ability to
though epidemiological studies have reported conflicting
cross the maternal placenta. In animal models, high doses of
results on whether bisphosphonate therapy is associated
bisphosphonates cause fetal underdevelopment and skeletal
with increased risk of AFFs, several recent studies indicate
retardation [However, data in humans are available
an association between duration of bisphosphonate use and
only from sporadic clinical cases, and no systematic studies
the incidence of AFFs [Glucocorticoids have
have been conducted. A review of the scientific literature
been proposed as a risk factor for the development of AFFs
evaluated a total of 58 women treated with bisphosphonates
in a number of studies –], although in a recent
just before or during pregnancy and found no evidence of
case control study in which atypical fractures were con-
abnormalities in the offspring []. Two cohort studies
firmed radiologically, the use of glucocorticoids was not
analysing pregnancy outcomes in women treated with
associated with increased risk of AFFs in patients who were
bisphosphonates up to the third month of pregnancy
taking bisphosphonates [].
reported no obvious excess of adverse fetal outcomes, al-
A causal association between bisphosphonate use and
though one case of Apert's syndrome (an autosomal domi-
AFFs and the possible role of glucocorticoids in the patho-
nant condition associated with a fibroblast growth factor 2
genesis of these fractures remain to be firmly established.
mutation causing acrocephalosyndactyly) occurred in a
Nevertheless, imaging should be considered in patients tak-
woman exposed to bisphosphonates [,
ing bisphosphonates who develop unexplained thigh or
Although overall these data are reassuring, bisphospho-
groin pain. In view of the rare occurrence of AFFs and the
nates should be avoided in premenopausal women, most of
proven efficacy of bisphosphonates, the overall benefit/risk
whom have a low absolute risk of fracture, unless there are
balance of bisphosphonate therapy is strongly positive in
strong indications for treatment (see ).
In postmenopausal osteoporosis, there is growing evi-
dence that biochemical markers have potential value in
The goal of bone-protective therapy in glucocorticoid-
monitoring the response to treatment [their use in
treated individuals is to reduce the risk of fractures. Minimal
monitoring treatment in glucocorticoid-treated patients is
follow-up includes verification that the patient is taking the
less well established but is an important area for future
medication, that the dosing procedure for the drug is appro-
research. Absence of an increase in serum PINP after
priate and that the patient is taking sufficient calcium and
3 months of teriparatide may identify patients in whom
vitamin D. During follow-up, a careful assessment of new
adherence is sub-optimal []. It should be noted that the
fractures should be included; rib and vertebral fractures are
underlying disease may itself affect bone turnover markers
particularly common in GIO. Annual height measurements
(BTMs), and the relationship between changes in BTMs and
should be included in the monitoring visit, and spine radio-
fracture risk has not been evaluated in GIO.
graphs or vertebral fracture assessment (VFA) by DXAshould be obtained if there has been significant height loss(more than 2 cm) or if there are other symptoms or signs that
Management of GIO in younger men
raise suspicion of fracture (note that vertebral fractures are
and premenopausal women
often asymptomatic in GIO) (Table However, the inci-dence of fragility fractures on treatment is low, and absence
Younger men (≤50 years)
of fracture during treatment does not necessarily mean treat-ment is effective. Therefore, surrogate indices of treatment
There are very few data on the use of glucocorticoids in
efficacy are recommended.
younger men. In the reported randomized double-blind trials,
In glucocorticoid-treated patients not receiving bone-
the majority of men were over the age of 50 years, with none
protective therapy, BMD measurements using DXA are
of the trials reporting on subsets of younger men. As such, any
recommended at baseline and at appropriate intervals there-
recommendations that can be made are based on expert opin-
after depending on the baseline level, the dose of GC, the
ion. In men, therapy with a bisphosphonate is of benefit when
disease for which it is given and the age and gender of
compared to placebo in maintaining bone mass. No conclu-
the patient. In patients receiving bone-protective therapy,
sions may be drawn regarding reduction in fracture risks.
monitoring with BMD is recommended, the frequency ofwhich will depend on the same factors. The BMD mea-
Premenopausal women
surement precision error (the least significant change ateach skeletal site established for the laboratory) must be
In general, premenopausal women on glucocorticoids are
considered when interpreting serial assessments in order
less susceptible to fracture than postmenopausal women.
to determine whether the change is real []. How-
However, a small study suggested that glucocorticoid-treated
ever, it should be emphasised that improvement in BMD
premenopausal women fractured at higher BMD than their
during treatment with anti-resorptive drugs accounts for a
postmenopausal counterparts Vertebral fractures in pre-
predictable but small part of the observed reduction in
menopausal women treated with glucocorticoids may be as-
the risk of vertebral fracture in postmenopausal osteopo-
sociated with lower cortical bone mass than in those without a
rosis [and the relationship between BMD changes
fracture ]. Independently of BMD, elevated BTMs might
and fracture risk reduction in patients treated for
identify cases with prevalent vertebral fracture ]. Factors
glucocorticoid-induced osteoporosis is unknown. Poor
other than glucocorticoids that help to identify premenopausal
adherence to therapy, failure to respond to therapy or
women at increased fracture risk are prior fractures ,
previously unrecognised secondary causes of osteoporo-
low BMD [family history of osteoporosis [
sis should be searched for in patients with documented
low BMI or low weight , ], age ], age at
BMD loss [].
menarche ], major depression [] and alcohol
Table 7 Recommendations formonitoring during glucocorti-
Grading of evidence
Assessment of adherence to therapy, including calcium and vitamin D, at each visit
Measurement of BMD at appropriate intervals
Annual height measurement
Vertebral fracture assessment by X-ray or DXA if fracture is suspected
Measurement of serum PINP after 3 months of teriparatide therapy
intake [In those on glucocorticoids, sustained high doses
postmenopausal women treated with teriparatide and
may increase the risk of fracture ].
alendronate, respectively, with corresponding figures fornon-vertebral fracture of nine and six []. However,fracture was not a primary end point of this study, and
Management of glucocorticoid-induced osteoporosis in premenopausal
women and men aged 50 years or less
the small number of fractures in premenopausal women
• Premenopausal women and younger men have a lower risk of fracture
and younger men precludes any conclusions about the
than older individuals.
relative anti-fracture efficacy of alendronate and teripara-
• Data on the effects of pharmacological interventions in this
tide in these populations.
population are sparse, particularly with regard to fracture risk.
In studies limited to premenopausal women, alendronate
• Bone-protective therapy may be appropriate in some premenopausal
was more effective in maintaining BMD compared to either
women and younger men, particularly in individuals with a previous
calcitriol or alfacalcidol [Etidronate was also
history of fracture or receiving high doses of glucocorticoids.
found to be more effective at preventing bone loss than
Caution is advised in the use of bisphosphonates in women of
childbearing age.
alfacalcidol in premenopausal women treated with gluco-corticoids [In patients with systemic lupus eryth-
Men and premenopausal women on oral glucocorticoids
ematosus (SLE) treated with high-dose glucocorticoids, of
are less likely to undergo BMD testing and to receive bone-
whom 70% of women were premenopausal, risedronate was
protective therapy than postmenopausal women [], pos-
of benefit in preventing bone loss at the lumbar spine
sibly because indications for the prevention of bone loss and
In a study of glucocorticoid-treated patients with chronic
fractures are not as clearly defined as in postmenopausal
kidney disease in which women in the study were predom-
women. There are a few treatment studies that are confined
inantly premenopausal, risedronate was effective in prevent-
to premenopausal women; however, in general, the studies
ing bone loss at the lumbar spine when compared to active
that have been done include premenopausal women as a
vitamin D In another small study of predominantly
subset of the overall study, and there are very few fracture
premenopausal women with renal disease, the combination
data from which conclusions may be drawn. As a result, the
of risedronate and alfacalcidol appeared to be of greater
available evidence is based on BMD data.
benefit than either alone []. In studies limited to calcitriol
In large randomized controlled trials in which subsets of
compared to calcium and vitamin D [and vitamin D
premenopausal women and men were studied, therapy with
compared to placebo [], no significant benefit of
alendronate [risedronate [and etidronate [has
calcitriol over calcium and vitamin D or vitamin D over
been reported to prevent bone loss at the lumbar spine when
placebo was demonstrated. In a small study of inhaled
compared to placebo. In the comparative study of zoledronic
and intermittent oral glucocorticoids, which did contain
acid versus risedronate ], a subset analysis of men in the
premenopausal women, calcitriol did not offer any benefit
trial demonstrated significantly greater increases in lumbar
spine BMD at 1 year in men treated with zoledronic acid
In a small study of hypogonadal women with SLE, hor-
than in those treated with risedronate, both in the prevention
mone replacement therapy was more effective than calcitriol
and treatment subpopulations. Total hip BMD increased
in preventing bone loss In another small study of
significantly in men treated with zoledronic acid, although
alfacalcidol compared to placebo alfacalcidol was of
the treatment difference was not significantly greater than
benefit in maintaining bone mass.
that seen in risedronate-treated men []. In a post hoc
Despite the lack of evidence for fracture reduction in
analysis in premenopausal women included in this trial,
glucocorticoid-treated premenopausal women, bone-
significantly greater increases in total hip, but not lumbar
protective therapy may be appropriate in some cases, particu-
spine, BMD were seen at 12 months in women treated with
larly in patients treated with high doses of glucocorticoids and
zoledronic acid when compared with those treated with
in those with a previous history of fracture. Long-term use of
risedronate [].
bisphosphonates and the potential for side effects remain a
Teriparatide has been shown to result in larger increases
concern. Caution is advised to women of childbearing age as
in BMD than alendronate in premenopausal women and
bisphosphonates cross the placenta and may affect the skeletal
men with GIO []. Radiographic vertebral fractures were
health of the developing fetus (see ).
not seen in any premenopausal women or men treated withteriparatide and were present in four men, but no premeno-
We are grateful to Amanda Sherwood and Heidi-
pausal women, treated with alendronate. Non-vertebral frac-
Mai Warren from the European Calcified Tissue Society and Judy
tures occurred in two premenopausal women and one man
Stenmark from the International Osteoporosis Foundation, for admin-istrative support. This paper has been consulted by the IOF Committee
treated with teriparatide and two men, but no premenopausal
of National Societies and the following associations: EFFORT, AO
women, treated with alendronate. In comparison, radio-
Trauma, International Society of Orthopaedic Surgery and Traumatol-
graphic vertebral fractures were seen in one and six
ogy, Endocrine Society, International Society of Endocrinology,
AACE, ILAR, EULAR, ACR, International Menopause Society, Inter-
national Association of Gerontology and Geriatrics, European UnionGeriatric Medicine Society, American Geriatrics Society and ASBMR.
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Lilly, GSK, Merck, Novartis, Pfizer, Procter & Gamble, Roche, Sanofi
2. American College of Rheumatology ad hoc Committee on
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Glucocorticoid-induced Osteoporosis (2001) Recommendations
Amgen, Bristol-Myers Squibb, Eli Lilly, Merck, Novartis, Pfizer,
for the prevention and treatment of glucocorticoid-induced oste-
Procter & Gamble, Sanofi Aventis, Roche and Warner Chilcott.
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Cómo referenciar este artículo / How to reference this article Gelabert Gual, Ll. (2014). Ideario y aportaciones metodológicas de Baltasar Bibiloni a la enseñanza musical en las Islas Baleares. Foro de Educación, 12(17), pp. 147-163. Ideario y aportaciones metodológicas de Baltasar Bibiloni a la enseñanza musical en
The American Journal of Pathology, Vol. 176, No. 4, April 2010 Copyright © American Society for Investigative Pathology Cardiovascular, Pulmonary and Renal Pathology Therapeutic Targeting of Classical and LectinPathways of Complement Protects fromIschemia-Reperfusion-Induced Renal Damage Giuseppe Castellano,* Rita Melchiorre,* of classical and lectin pathways of complement in a