Wrist

Question 1

What are the carpal bones? (SHE LOOKS TOO PRETTY; TRY TO CATCH HER)

Answer 1

8 carpal bones in 2 rows: proximal row scaphoid lunate triquetrum pisiform distal row trapezium trapezoid capitate hamate

Question 2

What are the wrist’s connections with the forearm?

Answer 2

radius with scaphoid+lunate

Question 3

Which are the carpal bones that is vulnerable to FOOSH?

Answer 3

FOOSH: fracture of scaphoid - blood supply to distal row now compromised and become necrotic

symptoms: pain, tenderness and swelling in anatomical snuffbox

Question 4

What structures are compromised in ulnar canal syndrome/handlebar neuropathy?

Answer 4

fracture: hook of hamate
- both the hamate and pisiform affected
- intrinsic muscles of the hand innervated by ulnar nerve can be compromised

Question 5

What is the palmar aponeurosis’ clinical significance?

Answer 5

contracture of palmar fascia (dupuytren’s)

• localised thickening
• prevents extension of MCP and IP
• flexion deformity
• ring and little finger most commonly affected