Evidence map›Paper›PMID 26895998›Full record

SynthesisJournal of general internal medicine2016

Effects of Long-Term Low-Molecular-Weight Heparin on Fractures and Bone Density in Non-Pregnant Adults: A Systematic Review With Meta-Analysis.

Olga Gajic-Veljanoski, Chai W Phua, Prakesh S Shah, Angela M Cheung

Open access · bronzeAbstract readMeta-AnalysisSystematic Review
In one paragraph

Synthesis in Journal of general internal medicine, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 27 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
27citing papers in PubMed, 2 pooled it
4.1field-weighted citation impact, top 6% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

27 citing papers in PubMed, 2 syntheses or guidelines pooled it, 73 citations in OpenAlex.

  1. Guideline
  2. Pooled it
  3. Article
  4. Article
  5. Review
  6. Drug-Induced Osteoporosis.Journal of clinical medicine · 2026
    Review
  7. Review
  8. Article
  9. Review
  10. Article
  11. Warfarin and heparin monitoring in antiphospholipid syndrome.Hematology. American Society of Hematology. Education Program · 2024
    Review
  12. Review
  13. Article
  14. Review
  15. Article
  16. Article
  17. Review
  18. Heparin and Derivatives for Advanced Cell Therapies.International journal of molecular sciences · 2021
    Review
  19. Review
  20. Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

4 authors at 3 institutions in 1 country.

Olga Gajic-VeljanoskiOsteoporosis Program, University Health Network/Toronto Rehabilitation Institute/Mount Sinai Hospital, Toronto, Canada.
Chai W PhuaDepartment of Medicine, Royal Victoria Hospital, Barrie, Canada.
Prakesh S ShahDepartment of Pediatrics, Mount Sinai Hospital, Toronto, Canada.
Angela M CheungOsteoporosis Program, University Health Network/Toronto Rehabilitation Institute/Mount Sinai Hospital, Toronto, Canada. angela.m.cheung@gmail.com.
Mount Sinai Hospital · CARoyal Victoria Regional Health Centre · CAToronto Rehabilitation Institute · CA

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundAdults who require long-term anticoagulation with low-molecular-weight heparin (LMWH) such as cancer patients or the elderly may be at increased risk of fractures.

objectiveTo determine the effects of LMWH therapy of at least 3 months' duration on fractures and bone mineral density (BMD) in non-pregnant adult populations.

methodsWe systematically reviewed electronic databases (e.g., MEDLINE, EMBASE), conferences and bibliographies until June 2015 and included comparative studies in non-pregnant adult populations that examined the effects of LMWH (≥3 months) on fractures and BMD. We synthesized evidence qualitatively and used random-effects meta-analysis to quantify the effect of LMWH on fractures.

resultsSixteen articles reporting 14 studies were included: 10 clinical trials (n = 4865 participants) and four observational cohort studies (3 prospective, n = 221; 1 retrospective, n = 30). BMD and fractures were secondary outcomes in the majority of trials, while they were primary outcomes in the majority of observational studies. In participants with venous thromboembolism and underlying cardiovascular disease or cancer (5 RCTs, n = 2280), LMWH for 3-6 months did not increase the relative risk of all fractures at 6-12 months compared to unfractionated heparin, oral vitamin K antagonists or placebo [pooled risk ratio (RR) = 0.58, 95 % CI: 0.23-1.43; I(2) = 12.5 %]. No statistically significant increase in the risk of fractures at 6-12 months was found for cancer patients (RR = 1.08, 95 % CI: 0.31-3.75; I(2) = 4.4 %). Based on the data from two prospective cohort studies (n = 166), LMWH for 3-24 months decreased mean BMD by 2.8-4.8 % (depending on the BMD site) compared to mean BMD decreases of 1.2-2.5 % with oral vitamin K antagonists.

conclusionsLMWH for 3-6 months may not increase the risk of fractures, but longer exposure for up to 24 months may adversely affect BMD. Clinicians should consider monitoring BMD in adults on long-term LMWH who are at increased risk of bone loss or fracture.

Indexed as

AdultBone DensityClinical Trials as TopicDrug Administration ScheduleFractures, BoneHeparin, Low-Molecular-WeightHumansObservational Studies as TopicTreatment OutcomeHeparin, Low-Molecular-Weightbonebone densityfracturesheparin, low-molecular-weightsystematic review

Identifiers

PMID26895998
PMCPMC4945546
OpenAlexW2276794929

What OpenQuestion holds

Textmetadata
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.