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Erschienen in:
01.02.2016 | Original Article • HIP - ARTHOPLASTY
Acute revision hip arthroplasty: a previously unrecognized risk factor for heterotopic ossification
Erschienen in: European Journal of Orthopaedic Surgery & Traumatology | Ausgabe 2/2016
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Background
The aim of this retrospective review was to determine the incidence and severity of heterotrophic ossification (HO) following acute revision total hip arthroplasty (THA), and whether this represents a significant risk factor for HO that should be treated prophylactically.
Materials and methods
A total of seven patients (three men and four women) with a mean age of 55 years (39–70 years) who underwent a reoperation of their THA for any reason that required a hip arthrotomy within 3 weeks of their primary or revision THA were included, with a mean follow-up of 8.8 years (2–12 years). All patients were evaluated radiographically for any evidence of HO and clinically using the Harris Hip Score.
Results
All seven hips (100 %) developed HO, with 71 % being severe (Brooker III and IV HO). One hip (14 %) developed Brooker IV HO, four hips (57 %) developed Brooker III HO, and two hips (29 %) developed Brooker II HO. The patient’s range of motion varied, but was very limited in three patients. Three patients (42.8 %) were not satisfied with their surgery; one patient had Brooker IV HO, and two patients had Brooker III HO.
Conclusion
Acute reoperation after primary or revision THA is a significant risk factor for the development of extensive HO, which requires prophylactic treatment.