Anatomy

Question 1

Where does Grayson ligament attach?

Where does Cleland attach?

Answer 1

Grayson ligament comes from volar flexor sheath and attaches to skin while lying volar to NV bundle. Fibres are perpendicular

Cleland attach to bone, pass dorsal to NV and attach to skin

Question 2

What muscles are in the thenar eminence and what are their innervations?

Answer 2

Abductor pollicis brevis - Median
Flexor pollicis brevis - Median and ulnar - deep head
Adductor pollicis - ulnar
Opponens pollicis - ulnar

Question 3

What muscles are in the hypothenar eminence and where do they attach?

Answer 3

Abductor digiti minimi - hook of hamate to base P1
Flexor digiti minimi - hook of hamate to base P1
Opponens digiti minimi - hook of hamate to distal MC

Question 4

What is the blood supply to scaphoid

Answer 4

Dorsal carpal branch of the radial artery 80% retrograde

Superficial palmar arch 20% (volar radial artery)