Ghera Stefano, Bisicchia Salvatore
Department of Orthopaedic Surgery, San Pietro Fatebenefratelli Hospital, Rome, Italy.
Hip Int. 2013 Jan-Feb;23(1):27-32. doi: 10.5301/HIP.2013.10718.
Femoral neck preserving stems have been developed to take advantage of the biomechanical properties of the femoral neck, and to optimise femoral anchorage and load distribution. The aim of this study was to report the clinical and radiological results in a group of 126 patients (150 hips), operated on for a total hip arthroplasty with the CFP stem. Clinical evaluation considered Harris Hip Score (HHS), thigh pain, Charnley classification, peri- and post-operative complications. Radiographic variables were stem sizing and alignment, femoral and acetabular osteolysis, the quality of cementation and restoration of the offset. The HHS at mean follow-up of 66 months was 83 points. We did not observe femoral or acetabular osteolysis, secondary malalignment or radiographic reactions, but only bone remodelling under the collar. The CFP stem must be used appropriately based on pre-operative planning (correct morphology and torsion of the femur). The surgical technique is straightforward if carried out step by step. We did not see any cases of significant limb length discrepancy.
保留股骨颈的假体柄已被研发出来，以利用股骨颈的生物力学特性，并优化股骨固定和负荷分布。本研究的目的是报告一组126例患者（150髋）采用CFP假体柄行全髋关节置换术的临床和影像学结果。临床评估包括Harris髋关节评分（HHS）、大腿疼痛、Charnley分级、围手术期和术后并发症。影像学变量包括假体柄尺寸和对线、股骨和髋臼骨溶解、骨水泥固定质量以及偏心距恢复情况。平均随访66个月时HHS为83分。我们未观察到股骨或髋臼骨溶解、继发性对线不良或影像学反应，仅在假体柄颈部下方出现骨重塑。CFP假体柄必须根据术前规划（股骨正确的形态和扭转）适当使用。如果逐步进行，手术技术简单明了。我们未发现任何明显肢体长度差异的病例。
