The joint most often affected is the first MP joint (big toe) as seen here.

如图所见的第一MP关节（大趾），它是最常受影响的关节。

youdao

I at last had my first real toe hold.

我终于获得了第一个真正的立足点。

youdao

I at last had my first real toe hold.

我终于获得了第一个真正的立足点。

youdao