Week 12 - Function of hand and wrist, ulnar nerve injury

Question 1

Name 3 grips

Answer 1

Power grip, Hook grip, precision handling grip

Question 2

Muscles used for power grip

Answer 2

Flexors, ECR and ECU helps extend hand to most mechanical efficient position

Question 3

Muscles used for hook grip

Answer 3

FDS + FDP, IPJ

Question 4

Muscles used for presicion handling grip

Answer 4

Flexor and extensors co-contracting at wrist, opponens pollicis

Question 5

Ulnar (Guyon’s) Canal

Answer 5

Between pisiform and hook
of hamate
* Ulnar nerve
* Ulnar artery

Ulnar Canal Syndrome
“Clawing” of 4th and 5th
digits.