Upper Extremities Anatomy
Upper extremity, also called upper limb, is a functional unit of your upper body and consists of your shoulder, the upper arm, the forearm, and the hand. The upper limb is made up of 30 bones and comprises many muscles, blood vessels (arteries and veins) and nerves. Upper limb disorders (ULDs) are conditions that can affect any part of your arm from fingers to shoulder or even your neck and typically exhibit in the form of aches, pains, stiffness, weakness, tingling, numbness, cramp and even swelling. These disorders are usually triggered due to problems with soft tissues and ligaments or because of issues related to circulatory or nerve supply to the upper limb.