WRIST JOINT

 

Joint animation

DESCRIPTION: This a biaxial joint between distal end of radius and proximal ends of the first row of carpal bones (scaphoid, lunate, triquetrum). Articular capsule has a prestyloid recess which contains intra-articular fibrocartilaginous meniscus.

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

 

 
Bones of hand and wrist

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 
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Creator: Oluwole Ogunranti