Document Detail

Procoagulants and osteonecrosis.
MedLine Citation:
PMID:  12672200     Owner:  NLM     Status:  MEDLINE    
OBJECTIVE: To study the relationship between hypofibrinolysis, thrombophilia, and osteonecrosis. We evaluated the frequency of abnormal concentrations of 9 coagulation factors in patients diagnosed with osteonecrosis. METHODS: Blood samples were drawn from 45 patients diagnosed with osteonecrosis. Etiologic associations included systemic lupus erythematosus (n = 9), inflammatory bowel disease (n = 1), corticosteroid therapy (n = 20), or history of heavy alcohol (n = 4) or tobacco (n = 3) use. No associated risk factors were identified in 5 patients; these individuals were labeled "idiopathic." The patient cohort was matched to a similarly studied cohort of 40 healthy individuals without documented osteonecrosis. The following factors were analyzed: plasminogen activator inhibitor (PAI-Fx), stimulated tissue plasminogen activator, lipoprotein (a), resistance to activated protein C, anticardiolipin antibodies (aCL IgG, IgM), protein C, protein S (free), and homocysteine. RESULTS: Thirty-seven of the 45 patients (82.2%) with osteonecrosis were found to have at least one coagulopathy, versus 30% of controls (p < 0.0001). Twenty-one patients (46.7%) were identified with 2 or more abnormal test results versus 2.5% of controls (p < 0.0001). Patients were more likely than controls to have high levels of the hypofibrinolytic plasminogen activator inhibitor activity (42% vs 3%; p < 0.0001), and high anticardiolipin antibody IgG (34% vs 10%; p = 0.008). At least one coagulation factor abnormality was detected in all 5 idiopathic patients; elevated aCL IgG and PAI-Fx were evident in 4 patients. CONCLUSION: This study revealed a high incidence of thrombophilic and hypofibrinolytic coagulation abnormalities in patients with osteonecrosis. These findings have major implications for the diagnosis as well as the treatment of this disease. Since some of these abnormalities may be the result of autosomal dominant disorders, it may be possible to detect individuals at risk for development of this disease.
Lynne C Jones; Michael A Mont; Tung B Le; Michelle Petri; David S Hungerford; Ping Wang; Charles J Glueck
Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  The Journal of rheumatology     Volume:  30     ISSN:  0315-162X     ISO Abbreviation:  J. Rheumatol.     Publication Date:  2003 Apr 
Date Detail:
Created Date:  2003-04-02     Completed Date:  2003-07-18     Revised Date:  2005-02-01    
Medline Journal Info:
Nlm Unique ID:  7501984     Medline TA:  J Rheumatol     Country:  Canada    
Other Details:
Languages:  eng     Pagination:  783-91     Citation Subset:  IM    
Department of Orthopaedic Surgery, Johns Hopkins University School of Medicine, Baltimore, Maryland 21239, USA.
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MeSH Terms
Antibodies, Anticardiolipin / blood
Blood Coagulation Disorders / complications,  epidemiology*,  immunology
Cohort Studies
Femur Head Necrosis / epidemiology*,  etiology,  immunology
Middle Aged
Plasminogen Inactivators / metabolism
Risk Factors
Sensitivity and Specificity
Thrombophilia / complications,  epidemiology,  immunology
Reg. No./Substance:
0/Antibodies, Anticardiolipin; 0/Plasminogen Inactivators

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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