3-Point Products' Blog

Anatomy of the Wrist

The carpal bones of the wrist make 2 rows of bones, the proximal and distal carpal row. Midcarpal instability (MCI) is related to lack of ligament support between the proximal carpal row and the midcarpal joint (between the 2 rows of bones). Midcarpal instability is most often of palmar type, but can also be considered dorsal or extrinsic depending on the specific ligament(s) involved in causing the instability.