| Carpal tunnel syndrome | A type of nerve entrapment injury that is brought on by increased pressure in the carpal tunnel. This can arise from two causes a decrease in available space or an increase in the size of the tendons and other structures that pass through the tunnel. Symptoms include pain, numbness, and tingling along the median nerve distribution.
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| Carrying angle | The angle that is formed by the long axis of the humerus and the long axis of the ulna.
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| de Quervain's tenosynovitis | An inflammation of the tendon on the side of the wrist at the base of the thumb, specifically the extensor pollicus brevis, which lies in the first dorsal compartment of the wrist.
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| Double-crush syndrome | A diagnosis of a compressed or trapped nerve in one area and a second entrapment in another location, with both entrapments contributing to symptoms.
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| Gunstock deformity | An exaggerated cubital varus that occurs as a result of trauma to the distal humerus.
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| Lateral epicondylitis | A condition considered to be a cumulative trauma injury that occurs over time from repeated use of the muscles of the arm and forearm that leads to small tears of the tendons.
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| Medial epicondylitis | An overuse injury affecting the flexorpronator muscle origin at the anterior medial epicondyle of the humerus.
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| Resting position | The position of elbow flexion of 70°. This position allows the most amount of space possible within the joint.
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| Triangular fibrocartilage complex (TFCC) | A small meniscus resting on the ulnar side, or the side of the wrist opposite the thumb. The complex serves as a site of connection of ligaments as well as a spacer or cushion between the carpal bones and the end of the forearm.
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