Hand Anatomy Finger Joints
The joint near the end of the finger is called the distal ip joint dip joint.
Hand anatomy finger joints. The ip joints of the digits also work like hinges when you bend and straighten your fingers and thumb. Finger joints knuckles each finger contains 3 joints more commonly known as knuckles.
The thumb has two knuckle joints. Distal interphalangeal joint dip.
Injuries and problems with this joint are uncommon. The metacarpophalangeal mcp joint is a diarthrodial joint where the large convex head of the distal aspect of the metacarpal articulates with the concave shaped proximal aspect of the phalange.
The middle finger mcp joint is the most common finger it can happen to any finger to have a radial sagittal band injury. Carpometacarpal joint cmc joint the middle finger cmc joint has little motion.
Each of the fingers has three joints. The joints of the hand fingers and thumb are covered on the ends with articular cartilage.
There are four joints in each finger totaling 20 joints in each hand. The large number of bones in the hand and wrist makes for a large number of joints too.
The thumb has two. The first ip joint between the proximal and intermediate phalanges is known as the proximal interphalageal joint pip joint.
The phalanges singular phalanx the 14 narrow bones that make up the fingers of each hand. Externally the mcp joint is seen as the knuckle in layman s terms which is the prominent metacarpal head.
This results in the extensor tendon snapping to the pinky side of the hand. The thumb only has one ip joint between the two thumb phalanges.
The most common place for a wrist sprain is at the ulnocarpal joint the joint between the arm bone and wrist bone on the pinky finger side of the hand. The small ringer middle and index fingers all have the same four joints.
Between the hand bones and first finger bones metacarpophalangeal joints hand finger joint there are two interphalangeal joints ip joints on each finger except for the thumb which has one. It works like a hinge when you straighten your fingers and thumb.
Metacarpophalangeal joint mcp the joint at the base of the. This first joint at the base of the finger is called the metacarpophalangeal joint mcp.
Each finger has three phalanges the distal middle and proximal. Joints are formed wherever two or more of these bones meet.
The wrist joints the distal radioulnar joint allows you to. To pass your clinical anatomy course you need to know all about these joints that help you move your wrist wave your hand and wiggle your fingers.
The dip joint is located at the tip of the finger just before the finger nail starts. Arthritis can develop at this joint and it is also commonly fractured.
The joint serves as the transition between the palm and the fingers.
