Ceramic-on-Ceramic Bearing Extensively Porous Coated AML Total hip arthroplasty in Patients with Osteonecrosis of Femoral Head

초록

Propose: To report the short & mid term results of ceramic-on-ceramic bearing extensively porous coated AMLⓇ Total hip arthroplasty (THA) in patients with osteonecrosis of the femoral head (ONFH). Material and Methods: Between April 2001 and June 2006, 128 patients of osteonecrosis of the femoral head(143 hips) with a ceramic-on-ceramic bearing extensively porous coated AMLⓇ Total hip arthroplasty (THA) were performed. Among these cases, 86 patient(100 hips) who were followed up more than two years, were evaluated. The average age of the patients at the index operation was 55 years (range; 26-87 years), and mean duration of a follow-up of 44 months(range; 24-82 months). The causative factors of ONFH were idiopathic in fourty-seven hips, alcohol abuse in thirty-two hips, posttraumatic in eleven hips, steroid in nine hips and dysbarism in one hip. The clinical and radiolographic results were evaluated by Harris hip score(HSS), thigh pain and serial radiographic findings, respectively. Results: The mean HSS was improved from average 52 points preoperatively to 96.6 points at last follow up. On the last roentgenograms, there was no cases aseptic loosening in the acetabular components, 1 case of aseptic loosening in femoral component was observed. Osteolysis was not observed in all cases. Complications were occurred in 1 case of chip fracture of liner intraoperatively, 1 case of fracture of ceramic head at 15 months after surgery and 1 case of deep vein thrombosis. Conclusion: Short & mid term clinical and radiographic results associated with use of the ceramic-on-ceramic bearing extensively porous coated AMLⓇ THA in patients osteonecrosis of femoral head were excellent. However, a long term follow up will be needed to determine the overall results. Key Words: Hip, Total hip arthroplasty, Ceramic on ceramic