What kind of joint is the trapeziometacarpal joint?
What kind of joint is the trapeziometacarpal joint?
plane synovial joints
The remaining four CMC joints are functional plane synovial joints that connect the medial four metacarpal bones (metacarpals 2, 3, 4, 5) with the distal row of carpal bones (trapezium, trapezoid, capitate, hamate). The three most medial CMC joints collectively form a group called the common carpometacarpal joint.
Which type of joint is found between the trapezium and first metacarpal joint?
The first carpometacarpal joint of the thumb is particularly important; the articulation between the first metacarpal and the trapezium bone forms a saddle joint and allows a wide range of movement, including flexion, extension, abduction, adduction, circumduction and opposition of the thumb.
What type of joint is the thumb metacarpal?
Metacarpophalangeal Joint (MCP Joint) The MP joint is where the hand bone, called the metacarpal, meets the finger bones called the phalanges. A single hand bone is called a phalanx. MP joints are important for both power grip and pinch activities and are where the fingers move with respect to the hand.
Where is the first metacarpal joint?
The 1st CMC (carpometacarpal) joint is a specialized saddle-shaped joint at the base of the thumb. The trapezium carpal bone of the wrist and the first metacarpal bone of the hand form the 1st CMC or thumb basal joint.
What is the name of the joint formed by the articulation between the trapezium and the metacarpal bone of the thumb?
Saddle Joint
Saddle Joint The primary example is the first carpometacarpal joint, between the trapezium (a carpal bone) and the first metacarpal bone at the base of the thumb. This joint provides the thumb the ability to move away from the palm of the hand along two planes.
Where is the CMC joint located?
The base of the thumb where it meets the hand is called the carpometacarpal (CMC) joint. This joint allows the thumb to move freely in many directions. It also provides strength so the hand can grasp and grip. A smooth tissue called cartilage lines and cushions the bones of the CMC joint.
What are the joints in your thumb called?
The thumb basal joint, also known as the carpometacarpal (CMC) joint, is a specialized saddle-shaped joint that is formed by a small wrist bone (trapezium) and the first of the three bones in the thumb (metacarpal).
Where is the second metacarpophalangeal joint?
The metacarpophalangeal joints (MCP) are situated between the metacarpal bones and the proximal phalanges of the fingers.
What attaches to first metacarpal?
The first metacarpal bone or the metacarpal bone of the thumb is the first bone proximal to the thumb. It is connected to the trapezium of the carpus at the first carpometacarpal joint and to the proximal thumb phalanx at the first metacarpophalangeal joint.