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目的介绍一种新设计的髁上型内锁髓内钉，适用于股骨下端和胫骨上端同种异体关节移植或瘤段灭活再植术。方法应用髁上型内锁髓内钉于同种异体骨关节移植６例。６例均为恶性骨肿瘤，其中股骨下端４例，胫骨上端２例。该钉为中空，闭合断面呈三叶草形，外径为１０ｍｍ～１２ｍｍ，远端前屈角为８°，近、远端设冠状方向直径５ｍｍ锁孔，逆行插钉法安装。结果６例骨关节移植均未出现近、晚期并发症，４例术后随访６个月以上，均在３个月左右骨接合端有初步愈合，术后功能好。结论髁上型内锁髓内钉使用方便，固定可靠，有较好的临床应用价值。
Objective To introduce a new type of suprasternal interlocking intramedullary nail, which is suitable for allograft joint transplantation or tumor segment replantation in the lower femur and upper tibia. Methods 6 cases of allogeneic bone and joint transplantation were performed with supracondylar intramedullary interlocking nails. All 6 cases were malignant bone tumors, including 4 in the lower femur and 2 in the upper humerus. The nail is hollow, the closed section is cloverleaf shape, the outer diameter is 10mm ~ 12mm, the distal anteversion angle is 8 °, the proximal and distal end is provided with a 5mm keyhole in the coronal direction, and the retrograde nail insertion method is installed. Results No proximal or late complications occurred in 6 cases of bone and joint transplantation. Four cases were followed up for more than 6 months. All of them had initial healing in 3 months or so. The postoperative function was good. Conclusion The supraspinal interlocking intramedullary nail is easy to use, reliable and reliable, and has good clinical application value.