Deep posterior compartment of the forearm

Definition

The deep posterior compartment of the forearm is a group of muscles located on the backside of the forearm, responsible for various movements including finger extension and wrist abduction. These muscles are separated from those in the superficial layer by a fascial plane, and they play a critical role in hand and forearm function.

Related terms

Extensor digitorum muscle: A muscle within the deep posterior compartment that extends fingers and can be considered one of its primary components.

Supinator muscle: This muscle also resides in the deep posterior compartment, playing a crucial role in rotating the forearm to turn the palm upward.

Fascia: A band or sheet of connective tissue, primarily collagen, beneath the skin that attaches, stabilizes, encloses, and separates muscles or other internal organs