Those that engage in racket sports and golf seem to be at the highest risk for this condition. The tendon of 6th compartment (extensor carpi ulnaris) can suffer recurrent dislocation due to a tear of the ulnar side of the compartment. The patient presents with pain over dorsal aspect of the forearm and wrist. Weightlifters, rowers, and other athletes are particularly prone to this condition. Learn about the six compartments of the dorsal aspect of the wrist, the tendons and muscles that control the movement of the thumb and fingers, and the common pathologies associated with them. It is however commonly brought on by activities that require repetitive wrist flexion and extension. Intersection syndrome can be caused by direct trauma to the second extensor compartment. Compartment II Anatomy The second dorsal compartment of the wrist lies between the first compartment and the Lister tubercle and contains the ex-tensor carpi radialis longus (ECRL. Surgical decompression can be consid-ered if conservative measures fail. The presence of anomalous or variant muscles in the fourth compartment may result in chronic dorsal wrist pain, a condition known as the fourth compartment syndrome. dorsal compartment is also performed, with a 7580 chance of resolution of symptoms 9. Any movement of the thumb and wrist causes the patient pain, inflammation and swelling. Repetitive trauma is believed to cause thickening of the tendons, which lead to movement restriction of the tendons through the compartment. The first compartment is the site where entrapment tendinitis, better known as De Quervain's disease, occurs. The other two most commonly injured are the sixth (extensor carpi ulnaris) and second ( intersection syndrome) compartments. The first compartment is the most frequently affected site, called De Quervain's disease (syndrome or tenosynovitis). ![]() ![]() The tendon runs within the groove of ulnar headĪny of the dorsal compartments of the wrist can develop tenosynovial inflammation. Positioned directly over the distal radioulnar jointĮxtensor digiti minimi usually has double tendon in the fifth compartment upon inserting onto the little finger ![]() Separated from the third compartment by Lister's tubercleįorms ulnar (little finger side) border of the anatomical snuff boxĮxtension of interphalangeal joint of thumb Thumb abduction and extension at metacarpophalangeal jointįorms radial (thumb side) border of the anatomical snuff box The compartments are numbered with each compartment containing specific extensor tendons. These sheaths reduce the friction to the extensor tendons as they traverse the compartments that are formed by the attachments of the extensor retinaculum to the distal (far end) of the radius and ulna. As the tendons travel over the posterior (back) aspect of the wrist they are enclosed within synovial tendon sheaths. The extensor tendons are held in place by the extensor retinaculum. Extensor tendon compartments of the wrist are anatomical tunnels on the back of the wrist that contain tendons of muscles that extend (as opposed to flex) the wrist and the digits (fingers and thumb).
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