Gallart Xavier, Fernández-Valencia Jenaro A, Ríos Gina, Bori Guillem, Riba Josep, Muñoz-Mahamud Ernesto, Combalía Andres
Hip Unit, Department of Orthopaedic Surgery and Traumatology, Hospital Clínic, University of Barcelona, C/ Villarroel 170, 08036, Barcelona, Spain.
Eur J Orthop Surg Traumatol. 2019 Apr;29(3):619-624. doi: 10.1007/s00590-018-2341-5. Epub 2018 Nov 8.
The use of short stem designs in total hip arthroplasty is not a new concept, but its popularity has increased as a bone-sparing alternative to traditional stems. This study analyzed the midterm clinical and radiological results of the Taperloc Complete Microplasty stem (Zimmer Biomet Warsaw, IN, USA). A total of 32 patients (20 men and 12 women) were retrospectively documented and received 40 stems (eight bilateral). The median patient age was 50 years (interquartile range 43-58) at the time of surgery. The median follow-up was 36.5 months (interquartile range 26.75-50.25). Indication for total hip arthroplasty was osteoarthritis (62.5% of patients), avascular necrosis (25%), and developmental dysplasia of the hip (12.5%). The Merle d'Aubigné score improved from a mean 11.5 preoperatively to a mean 17.5 at the latest follow-up. During X-ray assessment, we observed one subsidence of the stem (3 mm) and four cases of varus malalignment without clinical consequences. No cases of osteolysis were reported, and no stems were revised. According to our results, this short tapered stem shows a good early-term outcome. Prospective results and a longer follow-up are needed to assess the long-term survival of this stem fully.
在全髋关节置换术中使用短柄设计并非新概念，但作为传统柄的一种保留骨质的替代方案，其受欢迎程度有所增加。本研究分析了Taperloc Complete Microplasty柄（美国印第安纳州华沙市的捷迈邦美公司）的中期临床和放射学结果。共回顾性记录了32例患者（20例男性和12例女性），共植入40个柄（8例双侧植入）。手术时患者年龄中位数为50岁（四分位间距43 - 58岁）。中位随访时间为36.5个月（四分位间距26.75 - 50.25个月）。全髋关节置换术的指征为骨关节炎（占患者的62.5%）、股骨头缺血性坏死（25%）和髋关节发育不良（12.5%）。Merle d'Aubigné评分从术前平均11.5分提高到最近一次随访时的平均17.5分。在X线评估中，我们观察到1例柄下沉（3 mm）和4例内翻畸形但无临床后果。未报告骨溶解病例，也未进行柄的翻修。根据我们的结果，这种短锥形柄显示出良好的早期结果。需要前瞻性结果和更长时间的随访来全面评估该柄的长期生存率。
