| 生物固定C2型股骨柄对股骨近端应力遮挡影响的临床研究 |
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| 引用本文： | 马金忠,俞银贤,朱力波,王建东.生物固定C2型股骨柄对股骨近端应力遮挡影响的临床研究[J].中华关节外科杂志（电子版）,2008,2(5):23-25. |
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| 作者姓名： | 马金忠 俞银贤 朱力波 王建东 |
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| 作者单位： | 上海交通大学附属第一人民医院骨科,200080 |
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| 摘 要： | 目的 探讨生物固定C2型股骨柄人工全髋关节对股骨近端假体周围骨丢失方面的影响。方法31例C2型股骨柄全髋关节置换术（THA）后患者得到完整随访，包括X线片、Harris评分以及双能X线骨密度仪（DEXA）测量股骨近端假体周围骨密度，采用Gruen七区法，非手术侧作为对照。结果31例患者HHS评分优秀22例，良好8例，一般1例。X线显示所有柄都是稳定的，X线上未见明显假体周围骨密度改变。DEXA测量结果表明手术侧骨密度较非手术侧均出现下降，范围在2．42％～27．4％，平均6．67％，其中Gruen 4区和7区的骨密度下降有统计学意义（t值分别是-5．52和-7．08，P〈0．01）。结论 C2型股骨柄术后2年临床疗效较好，DEXA在评估THA的术后假体周围骨密度方面比普通平片更敏感，THA术后股骨近端假体周围的骨丢失是存在的，尤其在股骨距区下降明显。假体周围骨丢失与假体设计存在关系。
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| 关 键 词： | 关节成形术 置换 髋 骨密度 |
The stress shielding in the proximal femur after total hip arthroplasty with biological fixation C2 stem |
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| MA Jin-zhong,YU Yin-xian,ZHU Li-bo,WANG Jian-dong.The stress shielding in the proximal femur after total hip arthroplasty with biological fixation C2 stem[J].Chinese Journal of Joint Surgery(Electronic Version),2008,2(5):23-25. |
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| Authors: | MA Jin-zhong YU Yin-xian ZHU Li-bo WANG Jian-dong |
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| Institution: | . (Department of Orthopaedics, Shannghai First People＇s Hospital, Shanghai Jiaotong University, Shanghai 200080, China) |
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| Abstract: | Objective In order to understand the relationship between bone absorption and the design of metal implants,we evaluated the influence of biological fixation C2 femoral stem on stress-shielding in proximal femur.Methods BMD of 31 cases in the regions of proximal femur adjacent to metal cementless femoral implants 2 years after the cementless THA using C2 femoral stem were determined and compared by means of DEXA.These cases also were examined by radiography and HHS.Results According HHS,excellent outcomes we... |
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| Keywords: | Arthroplasty replacement hip Bone density |
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