The triangular fibrocartilagenous complex (TFCC) stabilizes the DRUJ through superficial, and more important, deep ligaments. Pronator quadratus covers the volar distal surface of both the radius and ulna. It often acts as a deforming force in unstable fractures. The radial bow and DRUJ relationships are necessary for proper forearm rotation.īrachioradialis tendon inserts on the radial side of the styloid as the floor of the first dorsal compartment. 28.1 Articular facets of the distal radius. The radius bows laterally allowing for rotation around the straight ulna.Īrticular surfaces include scaphoid and lunate facets separated by an interfacet prominence (sagittal ridge), and the sigmoid notch as part of the distal radioulnar joint (DRUJ ▶ Fig. This includes fine sensation and carpal tunnel syndrome findings.Ĭomplete vascular examination is necessary but frequently normal. Thorough neurological examination of the median, ulnar, and radial nerves is imperative. Open fractures often include small skin lacerations that can be found on the ulnar wrist where the ulna styloid has penetrated through the skin.įunctional evaluation and point tenderness is noted on the entire extremity. The surgeon must ask about pain in the forearm, elbow, and shoulder.Īlways search entire extremity for signs of direct trauma, such as open wounds, bruising, or lacerations. Attempts must be made to quantify both the amount of energy transmitted through the distal radius as well as the direction of the force transmitted.Īssociated injuries more proximal to the distal radius should be assessed. The mechanism of injury dictates the degree of injury severity.
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