Sixteen fresh-frozen adult human cadaveric upper extremities were used in a biomechanical analysis of distal radioulnar joint (DRUJ) stability. The relative contribution to stability of the DRUJ by the surrounding anatomic structures presumed to stabilize the joint was analyzed with respect to forearm rotation and wrist flexion and extension using a purpose-built 4-axis materials testing machin...

Rheumatoid arthritis commonly affects the distal radioulnar joint (DRUJ). This can result in pain, instability, or tendon rupture. The goals of surgical reconstruction of the DRUJ are to relieve pain, stabilize the joint, and prevent tendon rupture. We review many of the previously described procedures and report our experience with distal ulna excision and soft tissue reconstruction with a dis...

The prevalence of known solitary exostosis is around 1-2 % in the general population. Treatment of an exostosis may consist of resection with or without further treatment for deformity. The distal radioulnar joint (DRUJ) acts as the link between radius and ulna at the wrist and is important in the transmission of load. Its anatomic integrity should be respected in surgical procedures or ulnar-s...

This study correlated morphologic abnormalities of idiopathic carpal tunnel syndrome (CTS) with the severity of CTS using 3-T magnetic resonance imaging (MRI). The relationship of the severity of CTS and the cross-sectional area of the median nerve (CSA) was assessed at several levels. Seventy wrists of 35 patients (27 women and 8 men) with unilateral idiopathic CTS underwent nerve conduction s...

The distal radioulnar joint (DRUJ) is a complex articulation allowing significant rotational and translational motion. Stability of the DRUJ depends on bony contact, intrinsic stabilizers of the triangular fibrocartilage complex, and extrinsic stabilizers of the distal forearm. Understanding the anatomy of this articulation is paramount in clinical decision making for the treatment of disorders...

Dorsal and palmar subluxation of the distal ulna can be difficult to both diagnose and treat. Patients often present long after their initial injuries with posttraumatic arthritic changes in the distal radioulnar joint. Hemiresection interposition arthroplasty is a salvage procedure that is reliable for both pain relief and restoration of motion.

PURPOSE To measure the effects of distal radius malalignment on loading at the distal ulna. METHODS Using an adjustable mechanism to simulate angulated and translated malalignments, clinically relevant distal radius deformities were simulated in a cadaveric model. A custom-built load cell was inserted just proximal to the native ulna head to measure the resultant force and torque in the dista...

BACKGROUND The radioulnar carpal joint is critical for hand and wrist function. Radioulnar deviation indicates distal radioulnar joint flexibility and reflects the structure and function of the carpal bones, ulna, radius and ligaments. The present study examined whether radioulnar deviation is affected by gender, manual labor, playing a musical instrument, playing sport, handedness, previous fr...