INTERCARPAL JOINTS

 

Joint animation

DESCRIPTION: These can be divided into two groups- the first consist of the proximal intercarpal joints which is between the bones of the proximal row of carpus- scaphoid, lunate and triquetral. And the second  being the articulations between the distal row of carpal bones, which are trapezium, trapezoid, capitate and hamate.

LIGAMENTS:

NERVE SUPPLY:

BLOOD SUPPLY: Superficial and deep palmar arch.

MOVEMENTS:

         Flexion: All the tendons that cross the joint assist in flexion- flexor carpi radialis, palmaris longus, flexor digitorum superficialis, flexor carpi ulnaris and flexor digitorum profundus.

         Extension: All the extensor tendons that cross the wrist joint participate in  extending that joint. The main extensors are the extensor carpi radialis longus, extensor carpi radialis brevis and the extensor carpi ulnaris, assisted by extensor digitorum, extensor indicis, extensor digiti minimi and extensor pollicis longus.

         Radial deviation (abduction) by flexor carpi radialis, assisted by extensor carpi radialis longus, extensor carpi radialis brevis, abductor pollicis longus and extensor pollicis brevis.

         Ulnar deviation (adduction) aided by flexor carpi ulnaris and extensor carpi ulnaris.

Gallery

Neutral

Ulnar deviation

Radial deviation

Flexion

Extension

Skin

Interior

Bones

 

Electronic School of Medicine
Creator: Oluwole Ogunranti