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Heterotopic ossification following total hip replacement for acetabular fractures
O Chémaly1, J Hebert-Davies, D M Rouleau
1Hôpital du Sacré Cœur de Montréal, University of Montreal, 5400 Gouin Ouest, Local C-2095, Montréal, Québec H4J 1C5, Canada. ochemaly8@gmail.com
The Bone & Joint Journal
|January 12, 2013
Summary
Early total hip replacement (THR) for acetabular fractures increases the risk of heterotopic ossification (HO), impacting functional outcomes. Delayed surgery may reduce HO incidence and improve patient results.
Area of Science:
- Orthopedic Surgery
- Trauma Management
- Reconstructive Surgery
Background:
- Early total hip replacement (THR) for acetabular fractures facilitates faster rehabilitation.
- However, a significant risk of heterotopic ossification (HO) is associated with early THR.
- Understanding HO incidence and risk factors is crucial for optimizing patient care.
Purpose of the Study:
- To determine the incidence and severity of HO after THR for acetabular fractures.
- To identify risk factors associated with HO development.
- To evaluate the functional impact of HO on patients.
Main Methods:
- Retrospective review of 40 patients with acetabular fractures treated with THR.
- HO incidence and severity assessed using the modified Brooker classification.
- Functional outcomes evaluated using Harris hip scores.
Main Results:
- Overall HO incidence was 38%, with 9 severe grade III cases.
- Early THR (within 24 hours) showed a fourfold increased chance of HO.
- Severe HO negatively impacted functional outcomes (Harris hip scores).
- Associated injuries (musculoskeletal, high-energy trauma, head injuries) correlated with severe HO.
Conclusions:
- Early THR for acetabular fractures is linked to a higher incidence of HO compared to delayed surgery.
- Severe HO adversely affects functional outcomes after THR.
- Delayed THR may be a strategy to mitigate HO risk and improve functional recovery.
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