25 January 2015 : Clinical Research
Med Sci Monit 2015; 21:304-309
BACKGROUND: Hip resurfacing is a conservative type of total hip arthroplasty but its use is controversial, especially in patients with osteonecrosis. The aim of this study was analysis of the clinical and radiographic outcomes of hip resurfacing in patients with osteonecrosis.
MATERIAL AND METHODS: Between 2007 and 2008, 30 hip resurfacing arthroplasties were performed due to osteoarthritis secondary to avascular necrosis of femoral head staged as Ficat III and IV. Patients were qualified to resurfacing arthroplasty when the extent of avascular necrosis using Kerboul’s method was <200° and the angle between avascular necrosis and head-neck junction was >20°. All patients were evaluated clinically and radiologically before and 60 months after the operation.
RESULTS: The mean Harris Hip Score (HHS) score increased from 47.8 to 94.25 (p<0.05). Physical activity level (University of California, Los Angeles activity score – UCLA activity score) improved from 3.7 to 7.55 (p<0.05). No implant migration was observed.
CONCLUSIONS: Management of osteonecrosis of the hip with resurfacing arthroplasty seems to be effective in strictly-selected patients.
Keywords: Arthroplasty, Replacement, Hip - methods, Adult, Body Mass Index, Femur Head - surgery, Femur Head Necrosis - surgery, Hip Prosthesis, Osteonecrosis - surgery
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