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Musculoskeletal System > Anterior forearm > Flashcards

Anterior forearm Flashcards

1
Q

What nerves supplies the anterior forearm?

A
  • Ulnar nerve supplies FCU and medial half of FDP

- Median nerve serves the rest

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2
Q

What are the muscles of the anterior forearm?

A

-4 superficial =Pronator teres, Flexi Carpi Radialis, Palmaris longus, Flexi carpi ulnaris
4 Deep = Flexor digitorum superficialis, Flexor digitorum profundus, Flexor pollicis longus, pronator quadratus

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3
Q

Why is the medial epicondyle known as the common flexor origin?

A

-The 4 superficial anterior forearm muscles originate here which all do flexion

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4
Q

What are the functions of Pronator teres?

A
  • Weak flexion of the wrist

- Pronation

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5
Q

What are the functions of FCR?

A
  • Flexion of the wrist

- Abduction of the hand (radial deviation)

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6
Q

What are the functions of Palmaris longus?

A
  • Flexor of wrist

- Weak forearm flexion

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7
Q

What are the functions of FCU?

A
  • Flexion of wrist

- ADduction of hand (ulnar deviation)

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8
Q

What artery supplies the superficial group of the anterior forearm?

A

-Ulnar

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9
Q

Which muscle in the forearm is absent in 15% population?

A

-Palmaris longus

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10
Q

What is the main function of the muscles in the anterior forarm?

A

-Flexion of the wrist and fingers

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11
Q

What are the functions of FDS?

A
  • Flexion of MCP

- Flexion of proximal IP

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12
Q

What are the functions of FDP?

A
  • Flexion of wrist
  • Flexion of MCP
  • Flexion of all IPs
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13
Q

What are the functions of FPL?

A
  • Abduction of the wrist
  • Flexion of the carpometacarpal joing of the 1st digit
  • Flexion of the metacarpophalangeal joint of the 1st digit
  • Flexion of the interphalangeal joints
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14
Q

What are the functions of Pronator quadratus?

A
  • Pronation

- Stabilisation of radioulnar joint

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15
Q

How id FDP in relation to FDS?

A

-FDP beings deep to FDS but becomes superficial as it passes through the tendon if FDS at the digits

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16
Q

Compression of the median nerve at the wrist results in atrophy of which muscles?

A

-Thenar eminence

17
Q

What often causes compression of the median nerve at the wrist?

A
  • Repetitive movements

- Continuous gripping of heavy objects

18
Q

What is the bicipital aponeurosis?

A
  • Fascia at the elbow which protects the brachial artery and median nerve
  • Separates superficial structures from deep structures eg medial cubital vein from brachial artery
19
Q

What forms the carpal tunnel?

A
  • Deep carpal arch

- Superficial flexor retinaculum

20
Q

Where does the flexor retinaculum originate and insert?

A
  • Scaphoid and trapezium

- Hamate and pisiform

21
Q

What structures are in the carpal tunnel?

A
  • 4 tendons of FDS
  • 4 tendons of FDP
  • Median nerve
  • Tendon of FPL

Musculoskeletal System (34 decks)

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