Hand and Wrist Anatomy
Metacarpal Phalangeal Joints The Metacarpal Phalangeal Joint (MCP) is the articulation between the metacarpal bones of the hand and the first phalanges. The MCP joint is a condyloid articulation where the metacarpal bone terminates with a rounded head and the phalange has a concave end to receive it. A condyloid joint allows motion in two planes enabling flexion, extension, abduction and adduction.
Injuries to the MCP joints of the fingers are relatively rare although injuries to the MCP joint of the thumb are more frequent. Injuries to the thumb are typically ligamentous in nature involving the radial and ulnar collateral ligaments which are the primary stabilizers of the thumb.
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The Metacarpal Phalangeal Joint (MCP) is the articulation between the metacarpal bones of the hand and the first phalanges.
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