hand

Question 1

ulna

Answer 1

• stabilizing bone of the forearm, medial and longer of two
• proximally has the olecranon posteriorly, and coronoid process anteriorly, which form the walls of the trochlear notch
• trochlear notch of the ulna articulates with trochlea of humorous
• radial notch on lateral side of the coronoid process (articulates w radius)
• does not articulate directly w carpal bones, separated by fibrocartilaginous articular disc
• ulnar styloid process at distal end of ulna

Question 2

radius

Answer 2

• lateral and shorter of the two
• projection at proximal end (medial surface) is the radial tuberosity
• smooth superior aspect of the head of the radius is concave for articulation with capitulum of humorous
• ulnar notch at medial aspect of distal end to articulate with ulna
• radial styloid process at distal end (larger than ulnas)
• dorsal tubercle of radius lies between two shallow grooves for passage of the tendons of the forearms muscle

Question 3

carpal bones of hand

Answer 3

• 8 in total
• arranged in proximal and distal rows of four
• distal : TTCH trapezium, trapezoid, capitate, hamate

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-proximal : PTLS Pisiform, triquetrum, lunate, tubercle of scaphoid

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Question 4

short vinculum

Answer 4

• 2 in each finger
• one connecting the tendon of the flexor digitorum superficially (FDS) to the front of the first interphalangeal joint and head of the first phalanx
• the other connects the tendon of flexor digitorum profundus (FDP) to the front of the second interphalangeal joint and head of the second phalanx

Question 5

long vinculum

Answer 5

• long and slender
• one connect the flexor digitorum superficialis to the base of the first phalanx
• the other connects the under surfaces of the tendons of the flexor digitorum profundus to those of the subjacent flexor digitorum superficially after the tendons of the former have passed through the latter

Question 6

deep transverse metacarpal ligament

Answer 6

-anchors phalanges together (except thumb)

Question 7

radiate carpal ligaments (anterior carpometacarpal)

Answer 7

• diverge in all directions on the palmar surface of the carpal bones
• group of seven bands

see lecture 16

Question 8

ulnar collateral ligament

Answer 8

see lecture 16

Question 9

radial collateral ligament

Answer 9

• connects the radial styloid process with the scaphoid
• deep to abductor pollicis longus

see lecture 16

Question 10

intercarpal joints

Answer 10

carpal bones

Told Toni Cut hair (distal)

Question 11

mid carpal joints

Answer 11

separate proximal from distal carpal bones

Question 12

articular disc of radio-ulna joint

Question 13

radiocarpal joint