Conclusions: We concluded that the expandable IM femoral nail, when tested in purely axial rotation, has poor rotational stability compared with the standard locked IM femoral nail.
结论：我们认为当单纯进行轴向旋转测试时，和标准的锁定股骨髓内钉相比，膨胀股骨髓内钉的抗旋转稳定性差。
This allows the desired femoral rotation, which is that of the healthy femur, to be statically locked to precisely match the contralateral limb.
通过健康股骨，我们能够使想要的股骨旋转角度与对侧肢静态准确地匹配。
Joined as one piece and rotatable to the vertical strut, locked to stop rotation after in position.
连接成一个整体并且可绕竖向支撑转动，就位后锁定。
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