Changes in surgeries for lateral ankle instability in Japan and the current situation

The type of treatment used for lateral ankle instability has changed over the years. This paper reviews how the treatment of lateral ankle instability in Japan has changed and describes current trends. In Japan, at one point, a fresh injury was proactively treated with surgery. From 1990, conservative therapy was widely reported to provide good results for fresh injuries. The more accurate diagnosis of severity in future will enable the optimal treatment to be selected.