The term "metacarpophalangeal" refers to the joints located between the metacarpal bones of the hand and the phalanges, which are the bones of the fingers. These joints allow for a wide range of motion, including flexion, extension, and some degree of rotation. They play a crucial role in hand function, enabling activities such as gripping and pinching. Each metacarpophalangeal joint is surrounded by a capsule and supported by ligaments, which help stabilize the joint during movement. The MCP joints are essential for dexterity and strength in the hand, making them vital for everyday tasks and fine motor skills.