Posterior Thumb Flashcards
1
Q
Which muscles act on the thumb?
A
Abductor pollicus longus
Extensor pollicus brevis
Extensor pollicus longus
2
Q
What tendons border the anatomical snuffbox?
A
Tendon of the APL and EPB laterally
Tendon of EPL medially
3
Q
When is the anatomical snuffbox present?
A
When the thumb is fully extended
4
Q
Which bones form the floor of the anatomical snuffbox?
A
Scaphoid
Trapezium
5
Q
Which vessel lies on the floor of the anatomical snuffbox?
A
The radial artery
6
Q
Which nerve innervates EPL, EPB and APL?
A
Posterior interosseus
