Wrist and Hand Flashcards

1
Q

What are the boundaries of the anatomical snuff box

A
  • Lateral: Abductor pollicis longus tendon & Extensor pollicis brevis tendon
  • Medial: Extensor pollicis longus tendon
  • Floor (proximal to distal): Styloid process of the Radius, Scaphoid bone, Trapezius, base of 1st digit metacarpal
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2
Q

Contents of the anatomical snuff box

A
  • radial artery
  • cephalic vein
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3
Q

Bones of the hand (proximal to distal)

A

1) carpal bones
2) metacarpals
3) proximal phalanges
4) middle phalanges
4) distal phalanges

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4
Q

Enumerate carpal bones

Some Lovers Try Positions That They Cant’ Handle

A

PROXIMAL (lateral to medial):
* scaphoid
* lunate
* triquetrum
* pisiform

DISTAL (lateral to medial)
* trapezium
* trapezoid
* capitate
* hamate

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5
Q

Forms the palm

A

Metacarpals

5 digits - base, body, head

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6
Q

(True/False)

Digits 2 to 5 have 3 phalanges (proximal, middle, & distal) while digit 1 has 2 phalanges (proxial & distal)

A

True

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7
Q

Distal Radio-ulnar joints

(articulation - ligaments - movement)

A

ARTICULATION:
* Head of ulna to ulnar notch of radius
* articular disc

LIGAMENTS:
* anterior and posterior ligaments

MOVEMENT:
* pronation
* supination

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8
Q

Wrist joint

A

Radiocarpal Joint

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9
Q

Radiocarpal joint

(articulation - ligaments - movment)

A

ARTICULATION:
* Distal radius to proximal carpal bones - except pisiform

LIGAMENTS
* anterior and posterior ligaments
* ulnar collateral ligament
* radial collateral ligament

MOVEMENTS:
* flexion & extension
* adduction & abduction
* circumduction

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10
Q

Carpal to carpal joint

A

Intercarpal joint

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11
Q

Joints between carpal and metacarpal bones

A

carpometacarpal and intermetacarpal joint

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12
Q

Joints of the hand (proximal to distal)

A

1) radio-ulnar joint
2) radiocarpal joint
3) intercarpal joint
4) carpometacarpal joint
5) intermetacarpal joint
6) metacarpophalangeal joint
7) interphalangeal joint

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13
Q

Hypothenar eminence

A

medial of the palm

  • abductor digiti minimi
  • flexor digiti minimi brevis
  • opponens digiti minimi
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14
Q

The flexor retinaculum is a thickening of the deep fascia at the anterior surface of the hand. It forms the (1)

Important structures that passes through (2)

A

(1) osteofascial tunnel/carparl tunnel

(2) long flexor tendons of the wrist-thumb, and fingers, median nerve,

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15
Q

Structures that pass superficial to the flexor retinaculum

A

(medial to lateral)
* flexor carpi ulnaris tendon
* ulnar nerve
* ulnar artery
* palmar cutaneous branch of the ulnar nerve
* palmaris longus tendon
* palmar cutaneous branch of the median nerve

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16
Q

Structures that pass beneath the flexor retinaculum

A

(media to lateral)
* flexor digitorum superficialis tendons
* tendons of flexor digitorum profundus
* median nerve
* flexor pollicis longus tendon
* flexor carpi radialis tendon

17
Q

A thickening of deep fascia that stretches across the back of the wrist

holds the long extenso tendons in position

A

Extensor Retinaculum

Creates 6 separate tunnels for the passage of long extensor tendons - separated by fibrous septa, each lined by synovial fluid

18
Q

Structures that pass superficial to the extensor retinaculum

A

(medial to lateral)
* dorsal posterior cutaneous branch of the ulnar nerve
* basilic vein
* cephalic vein
* superficial branch of the radial nerve

19
Q

Structures that pass deep to the extensor retinaculum

A

(medial to lateral)
* extensor carpi ulnaris tendon
* extensor digiti minimi tendon
* extensor digitorum & extensor indicis tendons
* extensor pollicis longus tendon
* extensor carpi radialis longus and brevis tendons
* abductor pollicis longus
* extendor pollicis brevis tendons

20
Q

Nerve supply of the skin of the palm

A
  • LATERAL: palmar cutaneous branch of the median nerve
  • MEDIAL: palmar cutaneous branch of the ulnar nerve
  • BASE of the thenar eminence: lateral cutaneous nerve of the forearm/superficial branch of the radial nerve