Heterotopic ossification after total knee arthroplasty
Abstract
Methods: We retrospectively reviewed consecutive radiographs of 226 knees that were obtained at the end of sixth week, third, sixth, and twelfth months following TKA. The radiographic diagnosis of HO was based on the comparison of pre- and postoperative serial radiographs. Grading of HO was made according to the classification of Figgie et al. The clinical and radiographic course of HO and possible predisposing factors were investigated. No pharmacological prophylaxis was used other than mechanical measures to prevent deep vein thrombosis.
Results : Heterotopic ossification was detected only in two knees (0.9%) at the sixth month evaluation of lateral radiographs. It was grade 1 in both knees and localized at the supracondylar area of the distal femur. Both patients had primary osteoarthritis. There were no complaints except for mild nonspecific pain around the knee while standing. In both cases, HO underwent spontaneous improvement and disappeared on the twelfth month radiographs.
Conclusion: Compared with previous studies, the incidence of HO after TKA was quite low and this could be attributed to the lack of pharmacological thromboprophylaxis. Delayed appearance of HO in two patients suggests that TKA cases be monitored for a longer period for HO development.
Keywords
Details
Primary Language
English
Subjects
Health Care Administration
Journal Section
Research Article
Authors
Funda Atamaz
This is me
Semih Aydogdu
This is me
Simin Hepguler
This is me
Hakki Sur
This is me
Publication Date
September 11, 2006
Submission Date
March 7, 2014
Acceptance Date
-
Published in Issue
Year 2006 Volume: 40 Number: 3