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introductionstatpearls· Introduction· item NBK551630
The brachialis is an important flexor muscle of the forearm at the elbow.[1] The brachialis provides elbow flexion at all physiologic positions and is considered a "pure flexor" of the forearm at the elbow.[2] It lies in the anteroinferior area of the arm and is deeper than the biceps brachialis muscle. Brachialis contributes to the upper part of the anatomically important antecubital fossa of the elbow joint.