Forearm

The forearm is the intermediate segment of the free upper limb, between the elbow and wrist. Like the arm, it contains anterior and posterior compartments. However, in the forearm two bones are interposed between the compartments, the radius and ulna. Bones of the forearm The radius is the pre-axial bone; the ulna is postaxial (recall […]

Arm

The arm is the proximal segment of the free upper limb. The organization of the arm is simple: two muscle compartments (anterior and posterior) separated by a single bone (humerus). Let’s begin with the bone and then delve into the compartments, describing their muscles, nerves, and vessels. Humerus The proximal humerus was described in the […]

10. Arm, forearm, and elbow

In this chapter Optional Reading Clinically Oriented Anatomy, 8th ed., Chapter 3: Arm and Forearm sections.