| Objective To observe the preliminary clinical results and complications of total hip arthroplasty with Accolade TMZF cementless femoral stem.Methods From February 2010 to July 2012, 67 patients(70 hips) underwent primary total hip arthroplasty with cementless femoral stem. All patients were treated with Accolade TMZF Biological hip prosthesis system. Femoral component was treated with the same Accolade TMZF cementless femoral stem. Acetabular component was treated with Secure-fit HA and Trident PSL HA. The first mortar joint friction surface was treated with ceramic-ceramic composite in 49 hips, ceramic-polyethylene composite in 19 hips and metal-polyethylene composite in 2 hips. After replacement, hip imaging data were utilized to assess biological fixation of femoral stem prosthesis, osteolysis surrounding the prosthesis, and prosthesis subsidence, and to observe hip function, thigh pain and complications.Result During final follow-up, four patients(6%) suffered from slight pain. No moderate and severe pain or extremely severe pain occurred. None of the patients needed second operation due to failure for various reasons. X-ray films showed that no prosthesis displacement or loosening. Bone fixation surrounding the prosthesis was visible at the femoral side. Only one hip had subsidence of less than 2 mm, and the remaining did not experience subsidence. No blood vessels or nerve injury appeared during the surgery. During prosthesis placement, femoral calcar cleavage fracture occurred in 4 hips, so wire cerclage was used. Deep vein thrombosis in the lower limb or fractures surrounding the prosthesis was not found after placement.CONCLUSION These results indicated that the preliminary clinical results of primary total hip arthroplasty with Accolade TMZF cementless femoral stem are encouraging, can effectively improve the function of hip joint. But the follow-up time is shorter, mid-term long-term curative effect should be further observed. |
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