长尾式交锁髓内钉研制和应用

目的：通过改进临床上原有交锁髓内的结构，提高其使用的稳定性，提高手术质量。方法：加长交锁髓远端钉孔以远的钉体长度：由原来的2cm增加到3cm以上。在操作过程中，加长的钉体击入干骺端，以增加骨折处的稳定性。结果：手术操作过程中两侧骨孔与中间钉孔形成三点一线结构，稳定性提高：手术时拧进去的横向锁钉能准确锁中钉孔．确保手术的成功率。此外，因术中瞄准精确，缩短了使用C臂式X线机的时间，所以能大大减少术中X线放射给医生带来的人体伤害。结论：长尾式交锁髓内钉结构合理，操作方便，极大地提高了手术效率。经实验证实，手术效果满意。

Research and Application of Interlocked Intramedullary Nailing with Long Tail

Objective To improve original intramedullary structure clinically so as to improve its stability for utilization and to improve the operation quality. Methods The original intramedullary application principle was maintained with slight alteration that increases 2cm to 3 cm of the nailing length over intramedullary nail hole. During the operation, the elongated nail will be hit into the metaphysic to enhance the stability of the fracture and to avoid deviation when mounting nails so as to increase successful operation rate. Results With elongating the intramedullary nail enhances the stability at fractures during operation and the stability of the structure formed by the bone porosity at both sides and the middle nail hole, thus ensures that the transverse locking nails screwed in the operation could lock in the holes, so as to realize a successful interlock and to ensure the success rate of the operation. Because of sound accuracy and the time limit of C-arm X-ray system, this operation reduced the physical injury to doctors from X-ray and improved the medical quality. Conclusion This interlocked intramedullary nailing enjoys rational structure and convenient operation. It could increase the operation efficiency and prove its result is satisfactory.