Hand Anatomy Mcp Joint
Being condyloid they allow the movements of flexion extension abduction adduction and.
Hand anatomy mcp joint. Our hand bones are held in place and supported by various soft tissues. The lateral two lumbricals of the index and middle fingers are innervated by the median nerve.
The interphalangeal joints of the hand are the hinge joints between the phalanges of the fingers that provide flexion towards the palm of the hand. 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 joint closest to the end of the finger is called the distal interphalangeal joint or dip joint. Externally the mcp joint is seen as the knuckle in layman s terms which is the prominent metacarpal head.
A single hand bone is called a phalanx. These joints are of the condyloid kind formed by the reception of the rounded heads of the metacarpal bones into shallow cavities on the proximal ends of the proximal phalanges.
Arthritis means joint inflammation and is a word that is often used to describe pain or a problem at a joint. Flexion at the mcp joint and extension at the interphalangeal ip joints of each digit.
Articular cartilage ligaments muscles and tendons. The different joints of the hand are shown in figure 1.
The joint serves as the transition between the palm and the fingers. Mcp joint arthritis is most common in the thumb and index fingers due to the stress of pinching.
There are five separate metacarpophalangeal joints that connect each metacarpal bone to the corresponding proximal phalanx of each finger. Proximal interphalangeal joints pij or pip those between the first also called proximal and second intermediate phalanges.
Distal interphalangeal joint dip the joint closest to the fingertip. Joints are formed wherever two or more of these bones meet.
Metacarpophalangeal joint mcp the joint at the base of the finger. Metacarpophalangeal joint mcp joint the mp joint is where the hand bone called the metacarpal meets the finger bones called the phalanges.
Proximal interphalangeal joint pip the joint in the middle of the finger. There are two sets in each finger except in the thumb which has only one joint.
The metacarpophalangeal joints mcp are situated between the metacarpal bones and the proximal phalanges of the fingers. Similarly to the pip and mcp joints of the finger the mcp joint of the thumb is stabilized by the volar plate collateral ligaments and musculotendinous structures.
Metacarpophalangeal joint articulationes metacarpophalangeae the metacarpophalangeal joints mcp are a collection of condyloid joints that connect the metacarpus or palm of the hand to the fingers. Mcp joints are important for both pinching and gripping.
Mp joints are important for both power grip and pinch activities and are where the fingers move with respect to the hand. Each of the fingers has three joints.
Each metacarpophalangeal joint is formed by the.
