Metacarpophalangeal joint

Metacarpophalangeal joint (MCP) is a type of joint found in the human hand. It is located between the metacarpal bones and the phalanges. The MCP joint is a condyloid joint, which allows movement in two planes, flexion-extension and abduction-adduction.

Anatomy

The MCP joint consists of the rounded heads of the metacarpal bones and the shallow sockets of the proximal phalanges. The joint is surrounded by a joint capsule, which is strengthened by collateral ligaments on either side. The joint also contains a synovial membrane that produces synovial fluid to lubricate the joint.

Function

The MCP joint allows for a wide range of motion, including flexion, extension, abduction, adduction, and limited rotation. This range of motion is essential for the complex movements of the hand, such as gripping and manipulating objects.

Clinical significance

Injuries to the MCP joint can result in significant loss of hand function. Common injuries include dislocation, fracture, and sprain. Conditions such as rheumatoid arthritis and osteoarthritis can also affect the MCP joint, causing pain, stiffness, and loss of motion.

See also

• Hand anatomy
• Joint
• Metacarpal bones
• Phalanges

Metacarpophalangeal joint Resources
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