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Antivitamin K prevents heterotopic ossification after hip arthroplasty in diffuse idiopathic skeletal hyperostosis. A
F Guillemin1, D Mainard, H Rolland
1SIMES, Unite d'Epidémiologie, CHU de Nancy, France.
Insights
Patients with diffuse idiopathic skeletal hyperostosis (DISH) face a higher risk of heterotopic ossification after hip arthroplasty. Antivitamin K therapy may reduce this risk, suggesting a need for preoperative DISH diagnosis.
Area of Science:
- Orthopedic Surgery
- Rheumatology
- Radiology
Background:
- Heterotopic ossification (HO) is a potential complication following total hip arthroplasty (THA).
- Diffuse idiopathic skeletal hyperostosis (DISH) is a systemic condition characterized by extraskeletal calcification and ossification.
Purpose of the Study:
- To investigate the association between DISH and the risk of HO after THA.
- To evaluate the potential preventive effect of anticoagulant therapy, specifically antivitamin K, on HO development post-THA.
Main Methods:
- Retrospective analysis of 67 patients undergoing THA, with 16 diagnosed with DISH via radiographic imaging.
- HO was graded using the DeLee et al. (1976) classification system.
- Follow-up period of 1.4 years to assess HO incidence and compare outcomes between DISH and non-DISH patients, and between different anticoagulant therapies.
Main Results:
- A total of 21 patients developed HO during the follow-up period.
- Patients with DISH exhibited a 5-fold increased risk of developing HO compared to non-DISH patients.
- Patients treated with antivitamin K demonstrated a significantly lower risk of HO (relative risk 0.2) compared to those on other anticoagulant therapies.
Conclusions:
- Preoperative diagnosis of DISH is recommended for patients undergoing THA to identify those at higher risk for HO.
- Antivitamin K therapy may serve as a preventive measure against heterotopic ossification after hip arthroplasty.
- Further research into the specific mechanisms and optimal management strategies is warranted.
Abstract:
We investigated the risk of heterotopic ossification (HO) after total hip arthroplasty in 67 patients, 16 of whom had diffuse idiopathic skeletal hyperostosis (DISH). DISH was diagnosed on chest, dorsolumbar and pelvic radiographs. HO was graded according to DeLee et al. (1976). After a 1.4 year follow-up, 21 patients had HO. The risk of HO was 5 times higher in DISH than in non-DISH patients, but lower in patients receiving antivitamin K than in those receiving other anticoagulant therapy (relative risk 0.2). Our findings lead us to recommend that DISH should be diagnosed preoperatively for preventive therapy. They also suggest a preventive effect of antivitamin K against heterotopic ossification after hip arthroplasty.