The Elbow Flashcards

1
Q

Brachialis- location, attachment and movement

A

Location-Distal humerus Attachment- Coronoid process of ulna Movement- Flexes in all positions

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2
Q

Biceps brachii- location, attachment and movement

A

Location-Humerus Short head- attaches to corocoid process Long head- Supraglenoid tubercle Insertes onto the Radial Tuberosity of radius Movements: Flexor and Powerful supinator

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3
Q

Function of Coracobrachialis

A

Flex and adduct shoulder Resists dislocation

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4
Q

Name the muscles in the posterior compartment of the arm

A

Triceps Anconeus

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5
Q

Triceps reflex nerve routes

A

C7,C8

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6
Q

Biceps reflex nerve routes

A

C5,C6

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7
Q

What does the radial nerve pass through? Which muscle does it follow

A

Radial spiral groove Profunda brachii

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8
Q

Bones which form the elbow joint?

A

Humerus, radius, ulna

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9
Q

Function of the epicondyles?

A

Muscle attachment

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10
Q

Name the two articular surfaces of the condyles. Which is larger?

A

Lateral- capitulum

Medial- trochlea (larger)

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11
Q

How many fossas are at the elbow joint? Where are they located?

A

3 Altogether

2 anteriorly

1 posteriorly

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12
Q

Which bones form the medial and lateral side of the forarm

A

Medial- ulna

Lateral- radius

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13
Q

What are the 3 joints which form the elbow joint?

A
  1. Spool-shaped trochlea of humerus with trochlear notch of ulna (humero-ulnar)
  2. Spheroidal capitulum of humerus with head of radius (humero-radial)
  3. proximal radio-ulnar joint
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14
Q

Name the 3 main ligaments on the elbow joint

A

Radial collateral ligament

Ulnar collaterla ligament

Anular ligament

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15
Q

Location of the anular ligament?

A

Wraps around the head of the radius

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16
Q

Which bone in the elbow is most likely to get dislocated?

A

Radius

17
Q

Name the 3 bursae in the elbow and there location

A
  1. Intratendinous olecranon bursa

–Sometime present in triceps tendon

  1. Subtendinous olecranon bursa

–Between olecranon and triceps tendon

  1. Subcutaneous olecranon bursa

–Located in subcutaneous connective tissue

18
Q

Which bursa is bursitis most likely to affect?

A

superficial (subcutaneous) bursa

19
Q

Which mucsles flex the elbow joint?

A

•Chief elbow flexor

–Biceps brachii (when already flexed to 90o and supine)

–Brachialis

–Brachioradialis

(Rapid and in absence of resistance)

20
Q

Which muscles extend the elbow? Which nerve innervates these mucles?

A

•Chief elbow extensor

–Triceps brachii

–Anconeus helps triceps to extend the forearm

•Radial Nerve

21
Q

What is are the Chief supinator muscles

A

Biceps brachii

Supinator

22
Q

What are the Chief pronator muscles? Where are they located?

A

–pronator teres (at the elbow)

–pronator quadratus (at wrist)

23
Q

Location of the Musculocutaneous nerve

A

Travels between biceps and brachialis

24
Q

Location of radial nerve

A

Posterior- radial groove

Anterior to lateral epicondyle

25
Q

Location of median nerve

A

–Anterior compartment arm

–through cubital fossa

26
Q

Location of ulnar nerve

A

–Anterior compartment arm

–POSTERIOR medial epicondyle

27
Q

What is the blood supply of the elbow?

A

–Anastomosis of brachial, profunda brachii, radial & ulnar artery

28
Q

Boundries of the cubital fossa

A

–Superior imaginary line between medial and lateral epicondyles

–Medially pronator teres

–Laterally brachioradialis

–Floor (base) brachialis and supinator

–Roof brachial and deep fascia reinforced by biciptal aponeurosis

29
Q

What goes through the cubital fossa?

A

Median nerve

Brachial artery and vein