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MJM > The Arm, Forearm and Elbow Joint (AP) > Flashcards

The Arm, Forearm and Elbow Joint (AP) Flashcards

1
Q

What type of joint is the elbow?

A

Hinge joint

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2
Q

Which movements occur at the elbow?

A
  • Flexion
  • Extension
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3
Q

What does the interosseus membrane attach to?

A

Interosseus crests of the radius and ulna

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4
Q

Function of the interosseus membrane

A
  • Prevents migration of radius from ulna
  • Provides site of attachment for deep muscles of the forearm
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5
Q

Compartments of the arm

A
  • Anterior (flexor)
  • Posterior (extensor)
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6
Q

Muscles of the anterior compartment of the arm

A
  • Biceps brachii
  • Coracobrachialis
  • Brachialis
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7
Q

Muscles of the posterior compartment of the arm

A

Triceps brachii

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8
Q

Compartments of the forearm

A
  • Anterior (flexor)
  • Posterior (extensor)
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9
Q

Muscles of the anterior compartment of the forearm

A
  • Pronator teres
  • Flexor carpi radialis
  • Flexor carpi ulnaris
  • Palmaris longus
  • Flexor digitorum superficialis
  • Flexor digitorum profundus
  • Flexor pollicis longus
  • Pronator quadratus
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10
Q

Muscles of the posterior compartment of the forearm

A
  • Brachioradialis
  • Extensor carpi radialis longus
  • Extensor carpi radialis brevis
  • Extensor digitorum
  • Extensor digiti minimi
  • Extensor carpi ulnaris
  • Anconeus
  • Supinator
  • Abductor pollicus longus
  • Extensor pollicus longus
  • Extensor pollicus brevis
  • Extensor indicis
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11
Q

Intra- vs extra-articular fracture

A
  • Intra = extending into the joint
  • Extra = not extending into the joint
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12
Q

4 ligaments of the elbow

A
  • Medial/ulnar collateral ligament
  • Lateral/radial collateral ligament
  • Annular ligament
  • Quadrate ligament
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13
Q

What does the medial/ulnar collateral ligament connect?

A

Ulnar to humerus

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14
Q

What does the lateral/radial collateral ligament connect?

A

Radius to humerus

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15
Q

What does the annular ligament connect?

A

Radius to ulna

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16
Q

What does the quadrate ligament connect?

A

Radius to ulna

17
Q

Borders of the cubital fossa

A
  • Pronator teres (medial)
  • Brachioradialis (lateral)
  • Transverse line between epicondyles of humerus (superior)
18
Q

Contents of the cubital fossa

A
  • Median nerve
  • Radial nerve
  • Brachial artery
  • Tendon of biceps brachii
19
Q

Smith’s vs Colles fracture

A
  • Smith’s = displaced distal fragment of radius moves ventrally
  • Colles = displaced distal fragment of radius moves dorsally
20
Q

How does a Smith’s fracture occur?

A

Falling on a flexed wrist

21
Q

How does a Colles fracture occur?

A

Falling on an extended wrist

MJM (32 decks)

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