Upper Forearm Muscles, Forearm Muscles The part of the human arm between the elbow and the wrist is commonly called the forearm. Rotator cuff pain is felt at the front and side of your shoulder and upper arm. In this article, we shall look at the anatomy of the muscles of the upper arm – their attachments, innervation and actions. May 6, 2026 · These muscles are supported by the upper arm bone called the humerus and two forearm bones, the ulna and radius, which form a joint that rotates to let you turn the palm of your hand up or down. Names & Anatomy of the ‘Upper’ Arm Muscles The upper arm is divided into two compartments, the anterior (the front and inner side) and the posterior (the back and outer side). Learn origins, insertions, actions and innervations with clear clinical context. Apr 10, 2026 · The upper arm is located between the shoulder joint and elbow joint. Muscles of both the upper arm and forearm control movement of the forearm. The biceps brachii flex the forearm and work with the supinator of the forearm to rotate it so the palm faces upward. Apr 7, 2026 · Rotator cuff pain can result from tendinitis, tears, or tendinosis. ggn, q5k, bwlx, 4tdt, mkyjsj, llwvn, xwb, 8zm4, qyjz, nz,