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目的：研制可延伸的小儿股骨假体，探讨其在小儿骨肉瘤保肢手术中的应用价值．方法：设计制作了可延伸的股骨假体，通过临床应用，予以验证。结果：临床成功应用于１例小儿股骨肉瘤．术后随访３０月，下肢步态、关节功能良好。结论：可延伸股骨假体为小儿骨肉瘤保肢手术后功能重建提供了新途径．术前按个例情况预制假体．可延伸能力可达６０ｍｍ。
Objective: To develop an extensible pedicle femoral prosthesis and explore its value in limb salvage surgery of pediatric osteosarcoma. Methods: An extensible femoral prosthesis was designed and manufactured, which was verified through clinical application. Results: Clinical success was applied to 1 case of pediatric femoral sarcoma. Follow-up 30 months after surgery, lower limb gait, joint function is good. Conclusion: Extendable femoral prosthesis provides a new way for functional reconstruction of limb osteosarcoma after pedicle surgery. Preoperative cases according to preoperative prosthesis. Extendable capacity of up to 60mm.