Periacetabular triple osteotomy by single anterior approach for children under 6-years-old with severe acetabular deficiency: prevention of retroversion and anterior impingement

The aim of this study was to perform periacetabular triple osteotomy (PATO) in children under 6-years-old with severe acetabular deficiency aiming to obtain important correction and avoid excessive pressure on epiphysis, anterior overcorrection and acetabular retroversion. This is a retrospective study of 29 PATO using single anterior approach in 24 patients under 6-years-old with dysplasia of the hip. Clinical examination and radiographic evaluation were done pre-op, post-op and at last follow-up. Computed tomography (CT) scan was obtained, comparing operated hip to contro-lateral normal hip. Clinical examination of the operated hip, at the last follow-up, showed a normal range of motion with nonsignificant difference when compared to normal hip. All hips were classified as Wicart A, and all activities were allowed. Radiographically, X-ray revealed improvement of all parameters postoperatively, with nonsignificant change compared to the last follow-up. CT-2D axial analysis demonstrated the absence of acetabular retroversion with good anterior and posterior coverage. CT-3D imaging comparing the anterior acetabular inclination, anterolateral and posterolateral inclination angles of operated hip and normal hip showed comparable results. Patients less than 6 years with severe acetabular deficiency could benefit from PATO. Performing osteotomies close to joint gave important acetabular fragment freedom, allowing an important correction. Appropriate manoeuver of reorientation avoi...
Source: Journal of Pediatric Orthopaedics B - Category: Orthopaedics Tags: Hip Source Type: research