What type of joint is the carpometacarpal joint of the thumb?
synovial plane joints
The carpometacarpal joints of the fingers are synovial plane joints that serve as the articulation between the carpals and the metacarpals and allow the bases of the metacarpal bones to articulate with one another.
Is the thumb the first carpometacarpal joint?
The 1st CMC (carpometacarpal) joint is a specialized saddle-shaped joint at the base of the thumb. The saddle shape of this joint, formed by the trapezium and 1st metacarpal, allows the thumb to have such a uniquely wide range of motions including up/extension, down/flexion, in/adduction, out/abduction and opposition.
What is the thumb Carpometacarpal?
The thumb carpometacarpal (CMC) joint, a biconcave-convex saddle joint, consists of the articulation between the first metacarpal of the thumb and the trapezium carpal bone. Other significant articulations of the trapezial bone are the scaphoid and trapezoid carpal bones and the second metacarpal bone.
What does the carpometacarpal joint consist of?
They are comprised of two thick, fibrous bands that extend between the inferior aspect of the distal margins of the capitate and hamate bones and the third and fourth metacarpal bases.
What makes up the carpometacarpal joint?
The carpometacarpal (CMC) joints are synovial joints formed by articulations of the distal carpal row and the metacarpal bones.
What bones make up the carpometacarpal joint?
What is Carpometacarpal degenerative joint disease?
Carpometacarpal osteoarthritis is a degenerative condition of the hand that causes pain, stiffness and weakness. It is the second most common site of degenerative disease in the hand after arthritis of the distal interphalangeal joints.
How many Carpometacarpal joints are there?
five metacarpal
Anatomical terminology The carpometacarpal (CMC) joints are five joints in the wrist that articulate the distal row of carpal bones and the proximal bases of the five metacarpal bones.
Is the carpometacarpal joint a gliding joint?
The four CMC joints are capable of increasing ranges of motion as one moves medially; metacarpals 2 and 3 are almost immobile, metacarpal 4 is capable of a small degree of gliding, while metacarpal 5 can glide to such great extent as to produce flexion and rotation. …
Where is the metacarpal phalangeal joint?
The metacarpophalangeal joint or MP joint, also known as the first knuckle, is the large joint in the hand where the finger bones meet the hand bones. The MCP joint acts as a hinge joint and is vital during gripping and pinching.
