Metakarpofalangealleden

Metakarpofalangealleden refers to the joints located between the metacarpal bones of the hand and the phalanges, which are the finger bones. These joints are commonly known as the knuckle joints. There are typically five metacarpophalangeal joints in each hand, one for each finger and thumb. Each metacarpophalangeal joint is formed by the rounded head of a metacarpal bone articulating with the base of a proximal phalanx. These joints are classified as condyloid joints, which allow for a wide range of motion, including flexion, extension, abduction, adduction, and circumduction. This mobility is crucial for the complex movements and dexterity required for hand function. The metacarpophalangeal joints are supported by a complex network of ligaments, including the collateral ligaments, which provide stability, and the palmar ligament (or volar plate), which prevents hyperextension. The joint capsule is also reinforced by tendons that cross the joint. Conditions affecting the metacarpophalangeal joints can lead to pain, stiffness, and limited mobility, such as in arthritis or injuries.