Radiocarpal joint

Radiocarpal joint is a synovial joint in the human body, located in the wrist. It is a part of the upper limb and plays a crucial role in hand movements. The joint is formed by the radius, a bone in the forearm, and the carpal bones, which are located in the wrist.

Anatomy

The radiocarpal joint is a condyloid type of synovial joint. It is formed by the distal end of the radius and the articular disc of the inferior radioulnar joint proximally and the scaphoid, lunate, and triquetral bones distally.

The joint is surrounded by a fibrous capsule, which is lined by synovial membrane. The capsule is strengthened by palmar radiocarpal ligament, dorsal radiocarpal ligament, and ulnar collateral ligament.

Function

The radiocarpal joint allows for two degrees of freedom, giving the hand a wide range of motion. The joint allows for flexion and extension, as well as abduction and adduction, also known as radial and ulnar deviation.

Clinical significance

Injuries or diseases affecting the radiocarpal joint can significantly impact hand function and quality of life. Conditions such as rheumatoid arthritis, osteoarthritis, and carpal tunnel syndrome can affect the joint. In severe cases, joint replacement or arthrodesis may be necessary.

See also

• Wrist
• Carpal bones
• Radius (bone)
• Synovial joint