Herrera Antonio, Rebollo Sarai, Ibarz Elena, Mateo Jesús, Gabarre Sergio, Gracia Luis
Department of Orthopaedic and Trauma Surgery, Miguel Servet University Hospital, Medicine School, University of Zaragoza, Zaragoza, Spain; Orthopaedic Surgery, Miguel Servet University Hospital, Zaragoza, Spain.
J Arthroplasty. 2014 Jan;29(1):90-100. doi: 10.1016/j.arth.2013.03.028. Epub 2013 May 30.
This five-year prospective study was designed to investigate periprosthetic bone remodeling associated with two cemented stem models, ABG-II (Stryker) and VerSys (Zimmer), randomly implanted in patients older than 75 years. The sample consisted of 64 cases (32, ABG-II; 32, VerSys). Inclusion criterion was diagnosis of osteoarthritis recommended for cemented total hip arthroplasty. Besides clinical study, Finite Element (FE) simulation was used to analyze biomechanical changes caused by hip arthroplasty. Bone Mineral Density (BMD) measurements showed a progressive increase in bone mass throughout the entire follow-up period for both stems, well correlated with FE results except in Gruen zones 4, 5, 6 for ABG-II and in zones 4, 5 for VerSys, denoting that remodeling in those zones does not depend on mechanical factors but rather on biological or physiological ones.
这项为期五年的前瞻性研究旨在调查与两种骨水泥柄模型ABG-II（史赛克公司）和VerSys（捷迈公司）相关的假体周围骨重塑情况，这两种模型被随机植入75岁以上的患者体内。样本包括64例患者（32例植入ABG-II；32例植入VerSys）。纳入标准为诊断为推荐进行骨水泥型全髋关节置换术的骨关节炎。除了临床研究外，还使用有限元（FE）模拟来分析髋关节置换术引起的生物力学变化。骨密度（BMD）测量显示，在整个随访期间，两种柄的骨量均呈逐渐增加趋势，除了ABG-II的Gruen分区4、5、6以及VerSys的分区4、5外，与有限元结果相关性良好，这表明这些区域的重塑不依赖于机械因素，而是取决于生物学或生理学因素。
