Carpal Tunnel Syndrome

Front 1

What is the cause of CTS?

Back 1

Compression of the median nerve by the transverse carpal ligament.

Front 2

Muscles of hand supplied by the median nerve? (4)

Back 2

LOAF

Lumbricals (1st and 2nd)
Opponens pollicis
Abductor pollicis brevis
Flexor pollicis brevis

Front 3

Dermotome of the hand supplied by the median nerve?

Back 3

Lateral palm and the 1-3 phalanges and half the 4th phalanx (also the tips of the same lat 3 1/2 on the dorsum of the hand)

Front 4

Other dermatomes of the hand

Back 4

Ulnar nerve does the remaining 1 1/2 phal. and palm of the hand

Radial nerve does the dorsum lat 2/3 hand and ulnar the medial 1/3

Front 5

Risk factors carpal tunnel synd? (6)

Back 5

DM, Hypothyroid, RA, Preg, acromegaly, trauma wrist (also any path wrist, elbow, shoulder, neck)

Front 6

Symp (5)

Back 6

Pain (median n dist)
Parasthesia (median n dist)
Rad of pain prox to elbow
Worse night (wake from sleep)
Releaved by shaking hand

Front 7

Tests CTS (2)

Back 7

Phalens (forced flex at wrist causes tingling and sometimes pain)

Tinels (tapping over median nerve dist leads to tingling and pain)

Front 8

Rx

Back 8

Surgical decompression of nerve (flexor retinaculum)

Front 9

Investigations (3)

Back 9

Blood Glucose
TFTs
Nerve conduction velocities (usually reduced)

Front 10

Testing sensation in the hand - what nerves supply what areas?

Back 10

Median is the lat/radial 3 1/2 digits on the palmar aspect and the tips above the ITP joints dorsally

Radial nerve does most of the radial dorsum of the hand plus an area of the thenar eminence on the palmar aspect

Ulnar is the ulnar 1 1/2 digits on the palmar aspect and just the tips dorsally