The wrist is composed of eight carpal bones, which link the forearm to the hand, and the muscles, tendons and ligaments that connect them. The eight carpal bones are connected to the radius and ulna, which make up the forearm. The radius is the bone that allows rotation of the forearm. It is lateral to the ulna when the palm is facing up. The radius bears most of the weight of the wrist joint. The ulna is the bone that makes up the inside of the forearm. It provides flexion and extension of the elbow. In the wrist, the ulna bears only a small portion of the weight. The Triangular fibrocartilage complex is a cartilage disk that sits in the wrist joint. It is attached to the ulnar styloid, and acts as a cushion for the joint. On the back of the wrist, six compartments contain the tendons that extend the wrist and hand. On the front, or volar side, the majority of the tendons that flex the hand pass through the carpal tunnel.

Mechanism of Injury

The wrist can be injured as a result of trauma, repetitive use, or degeneration that occurs with age. Trauma is a leading cause of injury in the young. Falls on to an outstretched hand, or falls that lead to a sudden twisting injury to the wrist can lead to fractures or dislocations. Repetitive use is a common cause of wrist injury. People whose occupations require repetitive work, such as carpenters, machinists and typists are particularly susceptible. Athletes who play sports that place stress across the wrist, such as baseball, tennis, golf and softball, can develop wrist pain. Finally, normal wear and tear on the joint can accumulate over a lifetime, and lead to tears of the tendons and ligaments without any specific injury.

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Dr. Subair Khan in SUN TV

Dr. Subair Khan - Chief Doctor and MD of Orthomed Hospitals was featured in Sun TV at Virunthinar Pakkam. He is Explaining about the Orthopaedic & Sports Related Issues in Current Life Style....