1. Ulnocarpal instability refers to an abnormal movement or laxity of the ulnar side of the wrist joint.
尺骨腕关节不稳定指尺骨腕关节内侧异常的运动或松弛。

2. The ulnocarpal joint is located between the ulna bone and the carpal bones in the wrist.
尺骨腕关节位于手腕中的尺骨和腕骨之间。