Short-term effects of total hip arthroplasty using metal-on-metal prosthesis with large diameter femoral head
10.3760/cma.j.issn.0253-2352.2011.05.010
- VernacularTitle:大直径股骨头金属对金属全髋关节置换术的近期临床疗效
- Author:
Yi ZENG
;
Bin SHEN
;
Qiang HUANG
;
Jing YANG
;
Zongke ZHOU
;
Pengde KANG
;
Fuxing PEI
- Publication Type:Journal Article
- Keywords:
Arthroplasty,replacement,hip;
Rang of motion,articular,Follow-up studies
- From:
Chinese Journal of Orthopaedics
2011;31(5):469-474
- CountryChina
- Language:Chinese
-
Abstract:
Objective To evaluate clinical and radiographic outcomes associated with total hip arthroplasty (THA) using metal-on-metal prosthesis with large diameter femoral head.Methods From October 2007 to December 2007,41 patients (49 hips) underwent large diameter femoral head metal-on-metal THA in our hospital were involved in this study.Clinical outcomes measures were Harris score,hip range of motion and incidence of complications.Abduction angle and anteversion angle of cup were measured on radiological films.The radiolucent line and osteolysis around the prosthesis were also recorded.Results Thirty-nine patients (47 hips) were followed up at least 2 years.The average Harris hip score had improved from (43.8±13.1) points preoperatively to (92.0±5.4) points at final follow-up.All the patients had attained satisfactory results.No late complication happened.For the rang of motion at final follow-up:flexion of the hip had improved from 79.8° to 113.2°,abduction had improved from 20.9° to 40.2°,external rotation had improved from 12.0° to 30.8°.Radiological measurement showed the mean abduction angle of cup was 39.5°±4.9°,the mean anteversion angle of cup was 14.5°±2.1°.No radiolucent line and osteolysis were found after THA.Conclusion The short-term effects of THA using metal-on-metal prosthesis with large diameter femoral head is encouraging,especially for young patients.
