外踝高(sphyrion fibulare height )：从外踝点(mf)至地面的垂距。
结论：采用经外踝入路关节内环锯法行踝关节融合术，方法简单，融合率高。
Conclusions The use of trephine in ankle fusion by lateral approach was proved to be a simple technique with high union rate.
采用经外踝入路关节内环锯法行踝关节融合术，方法简单，融合率高。
The use of trephine in ankle fusion by lateral approach is proved to be a simple technique with high union rate.
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