1. Joints, muscles and action of the wrist and the hand
Dr. Szuák András
ÁOK

2. Joints radiocarpal (aka. wrist) midcarpal carpometacarpal
metacarpophalangeal
interphalangeal
proximal
distal

3. Radiocarpal joint radius+articular disc – scaphoid+lunate+triquetrum
main ligaments:
radial collateral lig. of wrist joint
ulnar collateral lig. of wrist joint
palmar radiocarpal
dorsal radiocarpal U

4. Movements ellipsoidal joint (2 axes) radial – ulnar abduction
palmar flexion - dorsiflexion

5. Midcarpal joints proximal – distal row main ligaments:
radiate carpal
pisohamate
palmar/interosseus/dorsal intercarpal
movements: none, only with the wrist

6. Carpometacarpal joints (except 1st)
distal row – base of metacarpals
main ligmanets:
palmar/dorsal carpometacarpal
palmar/interosseus/dorsal metacarpal
movements: none

7. 1st carpometacarpal joint
trapezium - 1st metacarpal (saddle joint – 2 axes)
movements:
abduction – adduction
opposition - reposition

8. Metacarpophalangeal joints
head of metacarpals – base of prox. phalanges
ligaments:
palmar
collateral
(deep transverse metacarpal ligament)
movements: (ball-and-socket joints)
flexion – extension
abduction – adduction
rotation (passive)

9. Interphalangeal joints
head – base of phalanges
ligaments
palmar
collateral
movements: (hinge joint 1 axis)
flexion – extension

10. Carpal tunnel Ulnar canal flexor retinaculum scaphoid & trapezium
Content:
-ulnar artery
-ulnar nerve
flexor retinaculum
pisiform &
hook of hamate
scaphoid & trapezium
carpal bones
Content:
-flex. digitorum superficialis
-flex. digitorum profundus
-flex. pollicis longus
-flex. carpi radialis
-median nerve

11. flexor digitorum profundus
flexor digitorum superficialis
vincula tendineum

12. The extensors… 3 2 4 5 1 6 abductor pollicis longus and
extensor pollicis brevis
extensor carpi radialis longus and
ext. carpi rad. brevis
extensor pollicis longus
extensor digitorum and
ext. indicis
5. extensor digiti minimi
6. extensor carpi ulnaris 3 2 4 5 1 6

13. Muscles, which move the wrist

14. Muscles of the hand MESO- HYPOTHENAR THEHAR THENAR
Live long and prosper. - Spock
HYPOTHENAR
THENAR

15. Thenar abductor pollicis brevis opponens pollicis
flexor pollicis brevis
superficial head
deep head
adductor pollicis
transverse head
oblique head
median nerve
ulnar nerve

16. Hypothenar abductor digiti minimi opponens digiti minimi
flexor digiti minimi
ulnar nerve
palmaris brevis

17. Mesothenar lumbricals - 2 radial – median nerve, 2 ulnar – ulnar nerve
interossei - ulnar nerve
dorsal (abduction)
palmar (adduction)

18. Thank you for your attention!