Carpometacarpal joint

Definition

The carpometacarpal (CMC) joints are found at the base of the palm of the hand, where the carpal bones of the wrist meet the metacarpal bones of the hand. These joints allow for the thumb's wide range of motion, including opposition, which is crucial for grip and precision in hand movements.

Related terms

Carpal Bones: The eight small bones that make up the wrist, serving as a flexible structure supporting movements of the hand.

Metacarpal Bones: The five long bones in the middle part of the hand that connect to each finger and thumb, facilitating movement and stability.

Opposition: A specific movement of the thumb across the palm towards or touching the fingers, enabled by muscles acting on carpometacarpal joints, crucial for grasping and manipulating objects