肿瘤性股骨远端切除术可能会使股骨近端太短而无法容纳股骨柄。重建技术因此具有挑战性。本研究的目的是比较两种不同选择的植入物存活率、并发症发生率和 MSTS。我们回顾性地将 33 例股骨远端原发性骨肿瘤患者分为第 1 组（16 例采用近端骨增量膝关节巨型假体重建，APC）和第 1 组。第 2 组（17 名患者用全股骨假体重建，TFP）。所有切除均计划保留小于 12 厘米的剩余股骨近端。第 1 组的 2 年 MSTS 评分为 25±±5，第 2 组为 19±±7（置信区间 [C.I.] 95%，p=±0.02）。 5 年时，第 1 组为 27±±2，第 2 组为 22±±6（C.I. 95%，p=±0.047）。第 1 组的失败率和并发症发生率较低，但未达到统计学显着性。在 APC 重建中，使用伸缩式骨增量技术，16 名患者中有 16 名在宿主-同种异体移植物连接处实现了愈合。与 TFP 相比，在扩大股骨远端切除术后，APC 提供了更高的功能结果。在 APC 重建中，伸缩增强术非常适合实现宿主-同种异体移植物连接处的结合。© 2024 作者。 《肿瘤外科杂志》由 Wiley periodicals LLC 出版。

Oncological distal femur resections can leave a proximal femur too short to host a stem. Reconstructive techniques are then challenging. The purpose of the study is to compare implant survival, complication rate and MSTS of two different options.We retrospectively divided 33 patients with primary bone tumours of distal femur in Group 1 (16 patients reconstructed with knee megaprosthesis with proximal bone augmentation, APC) and Group 2 (17 patients reconstructed with total femur prosthesis, TFP). Less than 12 cm of remaining proximal femur were planned for all resections.MSTS score at 2 years is 25 ± 5 for Group 1 and 19 ± 7 for Group 2 (confidence interval [C.I.] 95%, p = 0.02). At 5 years it is 27 ± 2 for Group 1 and 22 ± 6 for Group 2 (C.I. 95%, p = 0.047). Failure and complication rates are lower for Group 1, but no statistical significance was reached. In APC reconstruction, union at the host-allograft junction was achieved in 16 out of 16 patients using the telescopic bone augmentation technique.APC provides higher functional results compared to TFP after extended distal femur resection. In APC reconstruction, telescopic augmentation is excellent for achieving union at the host-allograft junction.© 2024 The Authors. Journal of Surgical Oncology published by Wiley Periodicals LLC.