The hand - bones, tendons & ligaments Flashcards Preview

MSK - Lian > The hand - bones, tendons & ligaments > Flashcards

Flashcards in The hand - bones, tendons & ligaments Deck (12)
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1
Q

What are the bones in the hand?

A

Carpal bones, metacarpals (1-5), phalanges (5 distal, 4 middle, 5 proximal)

2
Q

Name the carpal bones

A

Scaphoid, lunate, triquetrum, pisiform. trapezium, trazezoid, capitate, hamate

3
Q

What are the joint names in the hand?

A

Carpo-metacarpal joints
Metaphalangeal joints
Interphalangeal joints

4
Q

What ligaments prevent the metacarpals from spreading apart?

A

Palmar metacarpal ligaments - however there isn’t one on the first metacarpal therefore the thumb can move apart

5
Q

Outline the main ligaments of the metacarpal phalangeal joints

A

Palmar ligament (or palmar plate), collateral ligaments - within joint capsule, deep transverse metacarpal ligaments

6
Q

When the fingers are flexed, which ligament prevents side to side movement?

A

Collateral ligaments of the MP joint

7
Q

What does the thumb have on its flexor aspect of metacarpal phalangeal joint?

A

Two sesamoid bones (embedded in the joint capsule)

8
Q

Opposition of the thumb is a combination of what movements?

A

Abduction, flexion & medial rotation

9
Q

What are the two pulley-like structures of the wrist?

A

Flexor retinaculum & extensor retinaculum

10
Q

What does the flexor retinaculum contain

A

three compartments

1) carpal tunnel
2) tendon of flexor carpi radialis
3) ulnar artery & ulnar nerve

11
Q

What provides the tunnel for the flexor tendons to run in and where does it start?

A

flexor tendon sheath - proximal to the MP joint

12
Q

What dense fibrous triangular sheath covers the palm of the hand? What does it do?

A

Palmar fascia (or aponeurosis) - continuous with the flexor retinaculum and the tendon of palmaris longus

Has a protective function of muscles, vessels and nerves which run beneath it