Conclusions It is an effective method for extremity salvage treatment of patients with knee malignant bone tumors, and it is convenient to improve life quality and reserve low extremity function.

• 结论此手术可改善膝部恶性骨肿瘤患者的早期生活质量、减少致残率，严重手术并发症少，患者术后功能、效果较满意。