解剖型生物固定股骨柄假体的设计特征与临床应用效果  

Design features and clinical results of anatomic femoral stem in total hip arthroplasty

作　　者：蒋涛[1] 孙俊英[1] 查国春[1] 游镇君 王涛[1] 

机构地区：[1]苏州大学附属第一医院骨科,江苏省苏州市215006

出　　处：《中国组织工程研究》2014年第40期6425-6431,共7页Chinese Journal of Tissue Engineering Research

摘　　要：背景:Ribbed解剖型生物固定柄设计符合股骨生物力学特性,具有初始稳定性好、骨长入快及应力遮挡低等优点,获得满意的临床疗效。目的:探讨Ribbed解剖型生物固定股骨柄假体(Ribbed柄)的设计特征及其与临床疗效的关系。方法:对2010年3月至2012年3月因髋关节疾病采用Ribbed柄行全髋关节置换的患者进行回顾性分析。共获完整资料者52例(52髋),男20例,女32例;置换时年龄22-78岁,平均59岁。随访时间2-4年。评估置换前后Harris评分、置换后大腿疼痛率、术中骨折发生率、切口愈合情况、脱位及翻修等。影像学重点评估股骨柄髓腔充填率、股骨柄假体下沉、假体周围放射学透亮线、骨长入、应力遮挡及骨溶解等。结果与结论:术中股骨骨折发生率为6%;所有切口均一期愈合;无髋关节脱位及翻修病例;大腿疼痛率为6%,均于置换后1年消失;末次随访时,平均Harris评分由置换前48分提高到末次随访时96分。置换后X射线片示所有患者股骨髓腔充填满意,平均充填率:正位片上干骺端、中段和远端分别为91%,88%和86%,侧位片上干骺端、中段和远端分别为88%,85%和81%;末次随访时,49髋(92%)为稳定性骨长入固定,3髋为稳定性纤维长入固定,股骨侧及髋臼侧假体周围均未见骨溶解;5髋(10%)发生股骨柄假体下沉,但均小于2 mm;所有患者均出现不同程度的应力遮挡现象,其中1度31髋、2度19髋、3度2髋,无4度应力遮挡发生。提示Ribbed柄设计符合生物学固定要求,具有初始稳定性好、骨长入快及应力遮挡低等优点,可获得满意的临床疗效。BACKGROUND：Ribbed anatomic femoral stem meets the biomechanical features of the femur, and has achieved satisfactory clinical efficacy with good initial stability, rapid bone growth and low stress shielding. 〈br〉 OBJECTIVE：To evaluate the design features and clinical results of the cementless anatomic Ribbed femoral stem （Ribbed stem） in total hip arthroplasty. 〈br〉 METHODWe retrospectively analyzed 52 patients （52 hips） with hip joint disease who were treated with Ribbed stem in total hip arthroplasty between March 2010 and March 2012. There were 20 males and 32 females. The mean age was 59 years （range 22-78 years）. The mean fol ow-up was 3.1 years （range 2-4 years）. The preoperative and postoperative Harris hip scores, the rate of postoperative thigh pain, the incidence of intraoperative femoral fracture, wound healing, dislocation and revision were recorded. Radiographic evaluation was used to evaluate the rate of stem fil , subsidence of femoral stem, periprosthetic radiolucent line, bone ingrowth, stress shielding, and osteolysis. 〈br〉 RESULTS AND CONCLUSION：The incidence of intraoperative femoral fracture was 6%. Al incisions were healed. There were no cases of hip dislocation and revision;the rate of thigh pain was 6%, no patient had thigh pain after 1 year postoperatively. The mean preoperative Harris hip score was 48 points, which improved to a mean of 96 points at the final fol ow-up. Postoperative X-ray showed that al patients had a satisfactory femoral fil in both planes and al of the femoral stems were wel-fixed at the final fol ow-up. The average fil ing rate was 91%,＆amp;nbsp;88%and 86%by normotopia imaging, while 88%, 85%and 81%by lateral imaging, at the metaphysic, middle and distal ends respectively. At the final fol ow-up, 49 hips （92%） showed stable bone ingrowth, 3 hips showed stable fiber ingrowth. No osteolysis around the components at the femur or acetabulum was observed. 5 （10%） hips appeared the subsidence of femoral stems, which were＆lt;2 m

关 键 词：植入物 人工假体 全髋关节置换 解剖型 股骨柄 生物学固定假体 

分 类 号：R318[医药卫生—生物医学工程]