Abstract:

Background: In this study we aimed to compare the final follow-up pelvic radiographic views and computed tomographic views of combined proximal femoral valgus osteotomy and tectoplasty in the treatment of Herring group C Perthes disease with hinge abduction. Methods:This study was carried out in 11 male patients who underwent combined proximal femoral valgus osteotomy and tectoplasty related to Herring group C Perthes disease. The mean follow-up was 5.5 (2.2-9.3) years. The final follow-up pelvic radiographic views and computed tomographic views were compared in terms of femoral head subluxation ratio, femoral head coverage ratio, femoral head size ratio, Sharp angle, center-edge angle, neck-shaft angle, caput index and acetabular depth index. Results: In the comparison of datas obtained from pelvic radiographic views and computed tomographic views, only the caput index values showed significance with a p=0.031. The three diamentional tomographic comparison of the operated hip and non-operated hip in terms of femoral head coverage showed no significance with a p=0.494. Conclusions: The combination of proximal femoral valgus osteotomy and tectoplasty in the treatment of Herring group C Perthes disease provided consistent results with normal anatomy in terms of femoral head coverage. Computed tomography is a useful method in the measurement of caput index which is an important parameter in the assesment of surgical results in Perthes disease.

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