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

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