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Dorsal wrist compartments1/29/2024 ![]() ![]() Contains the extensor group of muscles, which are innervated by the radial nerve Function. examination time), especially in daily practice of a rheumatologist. The extensor retinaculum is a 2-cm fibrous band that acts as a pulley to restrict tendon bowstringing and to maximize biomechanical efficiency for digital and wrist extension ( Fig. A reduced score including those joint and tendon regions is sensitive to change and should be very feasible (3-5 min. The dorsal compartments are numbered from 1 to 6, beginning at the midsagittal aspect of the radial wrist. Flexion of the wrist and fingers Pronation of the hand The posterior compartment. To summarize, the MCP2, the dorsal wrist and extensor compartments IV and VI were the joint/tendon regions most frequently affected and responsive to therapy. ![]() It passes through the 3rd extensor compartment of the wrist, then continues laterally towards the thumb around Lister's tubercle. The tendon of EPL defines the ulnar border of the anatomical snuffbox. It is one of the extrinsic muscles of the hand. Contains the flexor group of muscles, which are innervated by the median and ulnar nerves Function. There are two methods used to identify these three compartments. intrinsic muscles () whose muscle bellies are located within the hand. extrinsic muscles whose tendons arise from muscle bellies within the forearm, and. The examination begins with the identification of EC1, EC2 and EC3. Hand movement is complex and occurs across many joints, including those involved in wrist flexion. It is lined internally by a synovial membrane, which produces synovial fluid to reduce friction between the articulating structures. These include common conditions like de Quervain’s tenosynovitis and dorsal ganglion cyst. The joint capsule of the wrist joint attaches to the radius, ulna and the proximal row of the carpal bones. Extensor pollicis longus (EPL) muscle is a muscle of the deep compartment in the posterior compartment of the forearm. 1AD) are in the dorsum of the wrist and stabilized by the extensor retinaculum. Radial sided wrist pain is common and ultrasound is helpful in detecting many of its causes. ![]()
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