The upper limb consists of 30 separate bones and is specialized for1 mobility. The skeleton of the arm, the region between the shoulder and elbow is the humerus. The head of the humerus articulates with the glenoid cavity of the scapula and forms the shoulder joint. The distal end of the humerus articulates with the two forearm bones the radius and ulna. The forearm is the region between the elbow and the wrist.Olecranon process is situated at the upper end of the ulna which forms the pointed portion of the elbow. The hand consists of carpals, metacarpals, and phalanges. Carpals, the wrist bones, 8 in number are arranged in two rows of four each.The anterior surface of the wrist has a tunnel-like appearance, due to the arrangement of carpals with the ligaments. This tunnel is termed a carpal tunnel. Metacarpals, the palm bones are 5 in number, and phalanges the bones of the digits are 14 in number