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MJM > The Wrist, Carpal Tunnel and Hand (AP) > Flashcards

The Wrist, Carpal Tunnel and Hand (AP) Flashcards

1
Q

Which structures form the carpal tunnel?

A
  • Carpal bones
  • Flexor retinaculum
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2
Q

Contents of the carpal tunnel

A
  • Median nerve
  • Tendons of flexor pollicis longus, flexor digitorum superficialis and flexor digitorum profundus
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3
Q

What causes carpal tunnel syndrome?

A

Compression of the median nerve

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4
Q

Symptoms of carpal tunnel syndrome

A
  • Painful paraesthesia
  • Numbness in thumb, index, middle and medial side of ring fingers
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5
Q

Phalanges of digits 2-5

A
  • Proximal
  • Middle
  • Distal
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6
Q

Phalanges of the thumb

A
  • Proximal
  • Distal
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7
Q

What movements are attainable at the metacarpophalangeal joints?

A
  • Flexion
  • Extension
  • Abduction
  • Adduction
  • Circumduction
  • Limited rotation
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8
Q

What movements are attainable at the interphalangeal joints?

A
  • Flexion
  • Extension
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9
Q

What are extrinsic muscles of the hand?

A

Muscles that originate outside of the hand and insert into hand structures

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10
Q

What are intrinsic muscles of the hand?

A

Muscles with origin and insertion in the hand

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11
Q

What do extrinsic muscles of the hand control?

A

Gross movement of the hand and wrist

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12
Q

What do intrinsic muscles of the hand control?

A

Fine motor movements

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13
Q

8 carpal bones (lateral to medial for each row, proximal then distal row)

A
  • Scaphoid
  • Lunate
  • Triquetrum
  • Pisiform
  • Trapezium
  • Trapezoid
  • Capitate
  • Hamate
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14
Q

What is the thenar eminence?

A

Fleshy mound at base of the thumb

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15
Q

Which muscles form the thenar eminence?

A
  • Opponens pollicis
  • Abductor pollicis brevis
  • Flexor pollicis brevis
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16
Q

Which nerve innervates the thenar muscles?

A

Median nerve

17
Q

What is the hypothenar eminence?

A

Fleshy mound at base of fifth digit

18
Q

Which muscles form the hypothenar eminence?

A
  • Opponens digiti minimi
  • Abductor digiti minimi
  • Flexor digiti minimi brevis
19
Q

Which nerve innervates the hypothenar muscles?

A

Ulnar nerve

20
Q

Borders of the anatomical snuffbox

A
  • Radial styloid process (proximal)
  • Base of 1st metacarpal (distal)
  • Scaphoid and trapezium (floor)
  • Extensor pollicis longus (medial)
  • Abductor pollicis longus and extensor pollicis brevis (lateral)
21
Q

Contents of the anatomical snuffbox

A
  • Dorsal digital branches of the superficial radial nerve
  • Cephalic vein
  • Radial artery
  • Tendons of extensor carpi radialis longus and brevis

MJM (32 decks)

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