Ligaments of Wrist and Hand

Question 1

Transverse carpal

Answer 1

function- prevents bowstringing of the tendons of the flexor pollicis longus, flexor digitorum superficialis & flexor digitorum profundus muscles

attachments- from the pisiform & hook of the hamate to scaphoid & trapezium

Question 2

Radiocarpal ligaments

Answer 2

function – stabilizes carpal bones on the radius

attachments – dorsal and palmar surface of the distal radius to the first two rows of carpal bones

Question 3

Radial collateral ligament of the wrist

Answer 3

function – restrain/limit wrist ulnar deviation

attachments – radial styloid process to scaphoid

Question 4

Ulnar collateral ligament of the wrist

Answer 4

unction – restrain/limit wrist radial deviation

attachments – ulnar styloid process to triquetrum

Question 5

Collateral ligaments of the metacarpophalangeal joints

Answer 5

function- stabilizes metacarpophalangeal joints

attachments- from the head of the metacarpals to base of adjacent proximal phalanx

Question 6

Triangular fibrocartilage complex (TFCC)

Answer 6

Function- Stabilize distal radio-ulnar and ulnocarpal joints, form concavity on the ulnar side of the wrist AND transfer compressive force from hand/wrist to the forearm

Components-
Biconcave fibrocartilage disc
Palmar ulnocarpal ligament
Ulnar collateral ligament