Extensor retinaculum

Definition

The extensor retinaculum is a fibrous band that wraps around the dorsum of the wrist, securing tendons of the extensor muscles in place as they cross into the hand. It ensures smooth and coordinated movements of the fingers and wrist by preventing bowstringing of the tendons during extension.

Related terms

Extensor Tendons: These are the tendons connected to muscles that help extend (straighten) the wrist and fingers.

Carpal Tunnel Syndrome: A condition caused by pressure on the median nerve within the wrist, often exacerbated by swelling but not directly related to the extensor retinaculum.

Flexor Retinaculum: A similar fibrous band located on the palmar side of the wrist, holding in place tendons that flex (bend) the wrist and fingers