It can decrease the strength of the bone-prosthetic and the incidence of the occurrence of fatigue fracture and the loosening of prosthetic.

• [结论]旋转铰链型假体减少了骨与假体之间的应力，大大降低了松动或疲劳折断的发生率，是膝部恶性骨肿瘤较理想的保肢方法。