With continued advances in treatment options, patients with endoprosthetic reconstruction are living longer and consequently relying upon their devices for a longer duration. Major causes of endoprosthesis failure include aseptic loosening and mechanical failure. In the setting of tumor resection, loss of bone stock and use of radiation therapy increase the risk for these complications. As such, considerations of remaining native bone and stem length and diameter may be increasingly important. We asked the following questions: (1) What was the overall rate of endoprosthesis failure at a minimum of 5-year follow-up? (2) Does resection length increase implant failure rates? (3) Does implant size and its ratio to cortical width of bone alter implant failure rates?

中文翻译：

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较大的骨干直径比可预测较低的骨水泥内置假体失败率

随着治疗方案的不断进步，进行内置假体重建的患者的寿命更长，因此对其装置的依赖时间也更长。内置假体失败的主要原因包括无菌性松动和机械故障。在肿瘤切除的情况下，骨质流失和放射治疗的使用会增加这些并发症的风险。因此，考虑剩余的天然骨和茎的长度和直径可能变得越来越重要。我们提出了以下问题：(1) 至少 5 年随访后，内置假体失败的总体发生率是多少？ (2) 切除长度是否会增加种植失败率？ (3) 种植体尺寸及其与骨皮质宽度的比率是否会影响种植体失败率？