In The Thumb Ligaments Diagram. The injury happens when you fall onto the outstretched thumb see diagramand is more likely if the thumb is gripping something at the same time. Two very important ligaments are the dorsoradial and the volar beak ligaments.
The thumb joint has two collateral ligaments. This joint is commonly affected by arthritis. The cmc joint of the thumb is located at the junction point of the thumb and the wrist.
The thumb possesses a unique and wide range of.
The wrist is formed where the two bones of the forearm the radius the larger bone on the thumb side of the arm and the ulna the smaller. Collateral ligament injuries cause instability of thumb grip and pinch. The thumb is the first of the hands five digits but it is typically not referred to as a finger. The following are the main structures of the hands.