Ceramic-on-ceramic total hip arthroplasty for treating avascular necrosis of the femoral head in 23 cases
Yu Bo Department of Orthopedics, Affiliated Hospital of Shandong University of Traditional Chinese Medicine, Jinan 250011, Shandong Province, China
OBJECTIVE: Aseptic prosthetic loosening is a primary problem of total hip arthroplasty. For this reason, several prosthesis interfaces with different characteristics have been studied, such as ceramic-on-ceramic prosthesis. The purpose of this study was to investigate the mid-and short-term curative effects of ceramic-on-ceramic total hip arthroplasty in treatment of avascular necrosis of the femoral head (ANFH) and to evaluate its clinical application value. METHODS: A total of 23 patients (28 hips) with ANFH who received ceramic-on-ceramic non-cement hip prosthesis replacement were followed up. All hip prostheses were BiCONTACT? ceramic-on-ceramic hip prostheses. Functional evaluation was assessed according to the Harris hip score. Radiographic analysis was performed using the Gruen’s zonal method for the stem and the zonal classification of Delee-Charnley for the cup implants. RESULTS: All patients were followed up for an average of 28 months. The mean Harris hip scores ranged from 39.45 points prior to surgery to 88.57 points after surgery, with a difference which was significant (P 0.05). Radiographically, no obvious prosthesis loosening or subsidence was observed. CONCLUSION: The ceramic-on-ceramic total hip arthroplasty can produce good short-term curative effects in treatment of ANFH. Radiographic findings do not show obvious prosthesis loosening.
【CateGory Index】： R687.4