ANAT30007 Lecture Notes - Lecture 18: Medial Collateral Ligament, Midcarpal Joint, Ulnar Nerve
20 May 2018
School
Department
Course
Professor
Radiocarpal
○
Intercarpal
○
Midcarpal (physiological/functional)
○
Joints of wrist
•
Carpometacarpal
○
Intermetacarpal
○
Metacarpophalangeal
○
Interphalangeal
○
Joints of hand
•
Wrist joint: Radiocarpal b/w distal radius and scaphoid, lunate, triquetrum
•
Intercarpal: B/w individual proximal and distal carpal bones
•
Midcarpal (Physiological joint): B/w proximal and distal carpal rows
•
•
Wrist complex
Radiocarpal
•
Condyloid joint - reciprocal convex/concave surfaces
•
Medial (radial) collateral
○
Lateral (ulnar) collateral
○
Palmar and dorsal radiocarpal
○
Palmar and dorsal ulnocarpal
○
Palmar and dorsal radioulnar
○
Oblique configuration of ligaments is important - V-shaped sling (radio-triquetral sling)
for preventing proximal carpals from moving towards ulna due to concavity of radius
○
Ligaments:
•
Triangular fibrocartilaginous disc at distal end of ulna, prevents contact - also part of distal
radioulnar joint
•
Blood supply: Branches of palmar and dorsal carpal arches
•
Innervation: Anterior(from median)/Posterior (from radial) Interosseus nerves [aka deep
branches of median/radial nerves], deep branch of Ulnar nerve
•
Wrist joint
6.3 Wrist and Hand Joints
Monday, 13 April 2015
11:14 PM
Locomotor Page 1
•
Flexion: FCR, FCU, FDS, FDP, FPL, PL, APL
•
Extension: ECRL, ECRB, ECU, ED, EI, EDM, EPL, EPB
•
Radial deviation (Abduction): APL, FCR, ECRL
•
Ulnar deviation (Adduction): ECU, FCU
•
Because distal end of radius projects more than distal end of ulna, there is a greater degree of
ulnar deviation at the wrist
•
Movements at wrist joint
Locomotor Page 2
Document Summary
Wrist joint: radiocarpal b/w distal radius and scaphoid, lunate, triquetrum. Intercarpal: b/w individual proximal and distal carpal bones. Midcarpal (physiological joint): b/w proximal and distal carpal rows. Oblique configuration of ligaments is important - v-shaped sling (radio-triquetral sling) for preventing proximal carpals from moving towards ulna due to concavity of radius. Triangular fibrocartilaginous disc at distal end of ulna, prevents contact - also part of distal radioulnar joint. Blood supply: branches of palmar and dorsal carpal arches. Innervation: anterior(from median)/posterior (from radial) interosseus nerves [aka deep branches of median/radial nerves], deep branch of ulnar nerve. Flexion: fcr, fcu, fds, fdp, fpl, pl, apl. Extension: ecrl, ecrb, ecu, ed, ei, edm, epl, epb. Because distal end of radius projects more than distal end of ulna, there is a greater degree of ulnar deviation at the wrist. B/w individual carpal bones in proximal and distal row.
