Stancil Ryan, Summers Nathan, Van Citters Douglas, Sassoon Adam
Department of Orthopaedics and Sports Medicine, University of Washington, Seattle, WA, USA.
Dartmouth Biomedical Engineering Center, Hanover, NH, USA.
Arthroplast Today. 2017 Nov 22;4(2):153-157. doi: 10.1016/j.artd.2017.10.004. eCollection 2018 Jun.
Femoral component fracture is a rare complication in unicompartmental knee arthroplasty, especially in cemented prostheses. We present a 75-year-old man who presented with a fractured single-peg Vanguard component 9 years postoperatively. He was revised to a total knee arthroplasty with an excellent functional outcome at 1 year. The components were additionally examined at an outside biomechanical engineering laboratory. Theories as to the cause of the component fracture include aseptic loosening due to a thin anterior cement mantle and the single-peg Oxford design.
股骨部件骨折是单髁膝关节置换术中一种罕见的并发症，在骨水泥固定假体中尤为如此。我们报告一例75岁男性患者，术后9年出现单栓Vanguard部件骨折。他接受了全膝关节置换翻修手术，1年后功能结果良好。这些部件还在外部生物力学工程实验室进行了检查。关于部件骨折原因的理论包括由于前方骨水泥壳薄以及单栓牛津设计导致的无菌性松动。
