Background/Aim: Chordomas often affect the sacrum with a high predilection for local-regional recurrence. Patients typically retain their ability to ambulate, and the development of metastatic disease in the periacetabular region can have significant morbidity and pain with ambulation. The purpose of the study was to describe the outcome of patients undergoing a hip arthroplasty following resection of a sacral chordoma. Patients and Methods: From 1990 to 2015, 84 patients underwent sacrectomy for chordoma, while four of these (5%) patients underwent hip arthroplasty. The most common level of nerve root sacrifice was S2-5 (n=2). The mean time between sacrectomy and hip arthroplasty was 7 years. Indications for arthroplasty included metastatic disease (n=3) and coxarthrosis (n=1). Results: Postoperatively two patients ambulated with a gait aid, and no patient had a Trendelenburg gait. The mean Harris Hip Score significantly improved from 49 to 80 postoperatively (p=0.02). Conclusion: The results of this study indicate that hip arthroplasty is a durable treatment option for patients with metastatic disease or coxarthrosis following subtotal sacrectomy for chordoma.

中文翻译：

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脊索瘤骶骨次全切除术后髋关节置换术

背景/目的：脊索瘤常累及骶骨，极易发生局部区域复发。患者通常保留其行走能力，并且髋臼周围区域转移性疾病的发展可能具有显着的发病率和行走时的疼痛。该研究的目的是描述在切除骶骨脊索瘤后接受髋关节置换术的患者的结果。患者和方法：从 1990 年到 2015 年，84 名患者因脊索瘤接受了骶骨切除术，其中 4 名 (5%) 患者接受了髋关节置换术。最常见的神经根牺牲水平是 S2-5 (n=2)。骶骨切除术和髋关节置换术之间的平均时间为 7 年。关节置换术的适应症包括转移性疾病（n=3）和髋关节病（n=1）。结果：术后两名患者使用步态辅助器行走，没有患者有特伦德伦伯卧位步态。术后平均 Harris 髋关节评分从 49 显着提高到 80（p=0.02）。结论：这项研究的结果表明，髋关节置换术是脊索瘤骶骨次全切除术后转移性疾病或髋关节病患者的一种持久治疗选择。