Posterior of Thumb Flashcards
1
Q
Where is the anatomical snuffbox
A
Shallow depression on lat wrist when thumb extended fully
2
Q
Anatomical snuffbox medial border
A
Extensor Pollicis longus
3
Q
anatomical snuffbox lateral border
A
extensor pollicis brevis and abductor pollicis longus
4
Q
anatomical snuffbox floor is made up of
A
scaphoid and trapezium
5
Q
which artery can you feel pulsating on floor
A
radial artery
6
Q
Innervation of
- Extensor Pollicis Longus
- Extensor Pollicis Brevis
- Adductor Pollicis Longus
A
Posterior Interosseous Nerve
7
Q
Main action of Extensor Pollicis Longus
A
Extension of Thumb at Metacarpophalngeal and Interphalangeal Joint
8
Q
Main action of extensor pollicis brevis
A
Flexion of Thumb MP Joint and Thumb CMC Joint
9
Q
Main action of adductor pollicis longus
A
Adducts the Thumb CMC Joint and Adducts/Assists in Flex of Thumb MP Joint
