Vanbiervliet Jens, Somers Jan F A
Department of Orthopaedic Surgery, University of Leuven, Leuven - Belgium.
Jan Yperman Hospital, Ypres - Belgium.
Hip Int. 2017 Sep 19;27(5):455-459. doi: 10.5301/hipint.5000486. Epub 2017 Feb 18.
This prospective cohort study reports the medium-term clinical and radiographic results of 113 hips treated with a hybrid total hip replacement (THR) with a new cemented tapered cobalt-chrome (Co-Cr) stem with a titanium (Ti) modular neck (ProfemurXm®).
Between October 2008 and December 2010 we performed 115 consecutive hybrid THR with the ProfemurXm® in 105 patients.
Survivorship of the implant (stem and modular neck) at a mean of 6.5 years (min 5-max 8) was 100% with the endpoint revision for any reason. No implant was at risk for revision or showed signs of loosening. The mean Harris Hip Score was 89/100, mean Oxford Hip Score was 43/48, mean WOMAC was 91/100. No patient had thigh pain, no patient reported squeaking. There were no dislocations in this cohort. No implant showed development of radiolucent lines (RLL), either at the stem-cement or cement-bone interface. No hip showed osteolysis or calcar resorption. The mean femoral subsidence of the stem within the cement mantel was 0.31 mm (range 0-0.6 mm) after 6.5 years. With the use of this modular stem, 93% of hips showed no measurable leg length difference after THR, and leg length could be restored within a 5-mm limit in 99% of hips.
The mid-term results of this new polished stem were excellent, without adverse effects from the use of modularity.
这项前瞻性队列研究报告了113例采用新型骨水泥型锥形钴铬（Co-Cr）柄和钛（Ti）模块化颈（ProfemurXm®）的混合全髋关节置换术（THR）治疗的髋关节的中期临床和影像学结果。
2008年10月至2010年12月期间，我们对105例患者连续进行了115例使用ProfemurXm®的混合THR。
平均6.5年（最小5年 - 最大8年）时，植入物（柄和模块化颈）的生存率为100%，无因任何原因进行翻修的情况。没有植入物有翻修风险或显示松动迹象。Harris髋关节评分平均为89/100，牛津髋关节评分平均为43/48，WOMAC平均为91/100。没有患者出现大腿疼痛，没有患者报告有摩擦声。该队列中没有脱位情况。在柄 - 骨水泥或骨水泥 - 骨界面处，没有植入物出现透光线（RLL）。没有髋关节出现骨溶解或股骨距吸收。6.5年后，柄在骨水泥壳内的平均股骨下沉量为0.31毫米（范围0 - 0.6毫米）。使用这种模块化柄后，93%的髋关节在THR后没有可测量的腿长差异，99%的髋关节腿长可恢复在5毫米范围内。
这种新型抛光柄的中期结果极佳，使用模块化未产生不良影响。
