Clinical Analysis Ofceramic Total Hip Joint Replacement

Objective Traditional total hip arthroplasty using metal on polyethylene after long-term use has been considered to be a reliable method,But it brings the problem of aseptic osteolysis. The purpose of this study was to investigate the mid-and short-term_clinical effects and_evaluate clinical value of ceramic total hip joint replacement.Methods A total of66patients (75hips) who received ceramic non-cement hip prosthesis replacement in First Affiliated Hospital of Guangxi Medical University were followed up._The average follow-up was63months. All patients underwent functional evaluation by Harris hip score preoperative and postoperative. Patients were radiographically examined pre-operatively using the Gruen’s zonal method for the stem and the zonal classification of Delee-Charnley for the cup implants.Observe prosthesis with or without loosening, osteolysis and femoral calcar absorption.Result The preoperative average Harris score was54.2points (20-56), mean postoperative score was91.6(80-100). with a difference which was significant (P<0.05)。Implant-related complication one was a liner fracture Intraoperative, the other was one revision because of liner fracture. COC group and COP groups to improve postoperative joint function had no significant differences.In comparasion of complications,there are statistically significant on liner fragmentation intraoperative and joint noise postoperative,but the other no significant difference.In the COP group found four cases of radiological osteolysis cases and two cases revision. COC group found no radiographic osteolysis and no revision.Concluslion Ceramic joint replacement for either the COC or COP combination achieved a satisfactory clinical results. but low wear of the COP combination of ceramic failed to prevent the osteolysis caused by polyethylene particles Ceramic-on-ceramic non-cement hip prosthesis is a good choice to younger patients, but its long-term efficacy still need longer follow-up verification.