Abstract
The aim of Femoro-Acetabular Impingement (FAI) surgery is to improve femoral head-neck clearance by resection of the osseous bump deformity. The purpose of this study was to investigate whether osseous bumps will re-grow and to compare two instruments used for resection osteoplasty; a shaver burr and an osteotome.
We reviewed records of patients who underwent surgical hip dislocation and debridement via Ganz flip osteotomy between March 2003 and July 2007. We excluded patients with less than one-year radiographic follow-up.
Ninety-five patients (95) underwent 98 surgical hip dislocations and were included (mean radiological follow-up 23 months, range 12–61 months). Bump re-growth occurred in 16 cases (16%). Pre and postoperative Non-Arthritic Hip Scores (NAHS) were available for 12 of the 16 patients. The mean pre- and postoperative NAHS were 62 (range 26–95) and 83 (range 41–104) respectively (p= 0.02). In the shaver burr group (n=57), there were 6 cases of bump re-growth (12%) compared to 10 cases in the osteotome group (n=41) (32%).
In this study, recurrence of osseous bumps did not affect the outcome. Using shaver burrs resulted in lower rates of bump re-growth than using osteotomes. This could be related to heat osteonecrosis at the femoral head-neck junction.
The abstracts were prepared by Mr D J Bracey, Editorial Secretary. Correspondence should be addressed to him at Royal Cornwall Hospital, Treliske, Cornwall TR1 3LJ, England.
