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Bones of the upper limb
Fascia, vessels and nerves of the upper limb
Anatomy of the brachial plexus
Anatomy of the pectoral and scapular regions
Anatomy of the arm
Muscles of the forearm
Vessels and nerves of the forearm
Muscles of the hand
Anatomy of the sternoclavicular and acromioclavicular joints
Anatomy of the glenohumeral joint
Anatomy of the elbow joint
Anatomy of the radioulnar joints
Joints of the wrist and hand
Anatomy of the axilla
Anatomy clinical correlates: Clavicle and shoulder
Anatomy clinical correlates: Axilla
Anatomy clinical correlates: Arm, elbow and forearm
Anatomy clinical correlates: Wrist and hand
Anatomy clinical correlates: Median, ulnar and radial nerves
Joints of the wrist and hand
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Evode Iradufasha, MD
Kaylee NeffSalma Ladhani, MD
Ursula Florjanczyk, MScBMC
The wrist is a complex joint that serves as the bridge connecting the forearm and the hand together.
It consists of a main radiocarpal joint, between the radius and the proximal row of the carpal bones minus the pisiform, and the smaller intercarpal joints, which are small joints among the carpals.
Then we have the hand, which consists of the carpo-metacarpal joints, the intermetacarpal joints, the metacarpophalangeal joints, and the interphalangeal joints.
Try saying those three times fast!!
Ok, let’s start with the wrist joint.
First, there’s the radiocarpal joint which is a condyloid type of synovial joint consisting of the distal radius and scaphoid, the lunate, and the triquetrum carpal bones.
Interestingly enough, the ulna doesn’t participate in the radiocarpal joint.
It is the articulating surface of the distal radius and the articular disc of the distal radio-ulnar joint which articulate with the proximal row of carpal bones to form the radiocarpal joint.
The articulating surfaces of the radiocarpal joint are surrounded by the tough joint capsule and synovial membrane, extending from the distal ends of the radius and ulna, to the scaphoid, the lunate, and the triquetrum.
The joint capsule of the radiocarpal joint is reinforced by a couple of ligaments, both on the dorsal and the palmar sides of the joint.
The palmar ligaments extend from the distal radius to the two rows of the carpal bones.
These ligaments strengthen the joint and make it possible for the hand and the radius to move as one unit during supination of the forearm, or turning the palm upwards.
The wrist is a complex joint that connects the hand to the forearm. It consists of the radiocarpal joint found between the radius and the proximal row of the carpal bones except for the pisiform; and the intercarpal joints, which are small joints among the carpals.
Joints of the hand include carpometacarpal joints found between the carpals and the metacarpals; the intermetacarpal joints among the metacarpals themselves; the metacarpophalangeal joints between the metacarpals and the proximal phalanges; and finally, the interphalangeal joints found between the proximal phalanges and the middle or distal phalanges.
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