Show pageOld revisionsBacklinksBack to top This page is read only. You can view the source, but not change it. Ask your administrator if you think this is wrong. ====== RADIOCARPAL JOINT ====== * Wrist * Type * Radiocarpal joint * Ellipsoid variety ( synovial ) * Articular surfaces * Upper * Inferior surface of lower end of radius * Articular disc of inferior radioulnar joint * Lower * Scaphoid * Lunate * Triquetral * Ligaments * Articular capsule * Attachment * Above to lower ends of radius and ulna * Below to proximal row of carpal bones * Recessus sacciformis * Lies infront of styloid process of ulna * In front of articular disc * Palmar radiocarpal ligament * Broad band * Palmar ulnocarpal ligament * Begins above base of styloid process of ulna * And anterior margin of articular disc * Dorsal radiocarpal ligament * Begins above posterior margin of lower end of radius * Attached below to * Dorsal surfaces of scaphoid , lunate and triquetral * Radial collateral ligament * Extent * Tip of styloid process of radius to lateral side of scaphoid bone * Ulnar collateral ligament * Extent * Tip fo styloid process to triquetral and pisiform bones * Blood supply * Anterior and posterior carpal arches * Nerve supply * Anterior and posterior interosseus nerves * Relations * Anterior - long flexor tendons of and median nerve * Posterior - extensor tendons of wrist , and fingers with their synovial sheaths * Lateral - radial artery * MOVEMENTS * Flexion * Flexor carpi ulnaris , flexor carpi radialis , palmaris longus * Extension * Extsnro carpi radialis longus and brevis , extensor carpi ulnaris , * Abduction ( radial deviation ) * Flexor carpi radialis , extensor carpi radialis brevis and longus * Adduction ( ulnar deviation ) * Flexor and extensor carpi ulnaris * Circumduction | | | | Type | Synovial ellipsoid joint; | | Articular surfaces | Proximal component - distal end of radius, articular disc | | | Distal component - scaphoid, lunate and triquetral of the proximal row of carpal bones (also includes triangular fibrocartilage complex) | | Ligaments | Palmar radiocarpal joint, dorsal radiocarpal ligament, ulnar collateral ligament, radial collateral ligament | | Innervation | Anterior interosseous nerve arising from median nerve (C5-T1) | | | Posterior interosseous nerve arising from radial nerve (C7-C8) | | | Deep and dorsal branches of the ulnar nerve (C8-T1) | | Blood supply | Branches of the dorsal and palmar carpal arches | | Movements | Flexion, extension, adduction and abduction | en/wrist_joint.txt Last modified: 2023/06/21 10:53by 127.0.0.1