2.3. The Elbow Joint Flashcards Preview

3rd Year - MSK Upper Limb Anatomy > 2.3. The Elbow Joint > Flashcards

Flashcards in 2.3. The Elbow Joint Deck (29)
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1
Q

What does the Elbow Joint connect?

A
  1. The Arm

2. The Forearm

2
Q

What marks the Elbow Joint in the Upper Limb?

A
  1. Medial Epicondyle of the Humerus
  2. Lateral Epicondyle of the Humerus
  3. Olecranon Process of the Ulna
3
Q

What type of Joint is the Elbow Joint?

A

Synovial Hinge

4
Q

How many Separate Articulations are there in the Elbow Joint?

A

2

5
Q

What are the Separate Articulations in the Elbow Joint?

A
  1. Trochlear Notch of the Ulnar and Trochlea of the Humerus

2. Head of the Radius and Capitulum of the Humerus

6
Q

What other Joint is found in the same Bursae as the Elbow Joint?

A

The Radioulnar Joint

Note - although this is in the same area, it is considered an entirely separate articulation

7
Q

What are Synovial Joints surrounded by?

A

A Fibrous Capsule, Enclosing the Joint

8
Q

What is the Benefit of the Fibrous Capsule?

A

It Strengthens the Joint

9
Q
  1. How is the Elbow Joint Capsule described on the Anterior and Posterior Surfaces?
  2. What is the function of this?
A
  1. Loose

2. It allows for Movement

10
Q

What is a Bursae?

A

A Membranous Sac filled with Synovial Fluid

11
Q

What is the function of the Bursae?

A

It cushions the Moving Parts of a Joints, Preventing Degenerative Damage.

12
Q

How many Clinically Important Bursae are there in the Elbow?

A

3

13
Q

What are the Clinically Important Bursae in the Elbow?

A
  1. Intratendinous
  2. Subtendinous
  3. Subcutaneous
14
Q

Where is the Intratendinous Bursa of the Elbow Joint located?

A

Within the Tendon of the Triceps Brachii

15
Q

Where is the Subtendinous Bursa of the Elbow Joint located?

A

Between the:

  1. Olecranon
  2. Tendon of the Triceps Brachii
16
Q

Where is the Subcutaneous Bursa of the Elbow Joint located?

A

Between the:

  1. Olecranon
  2. Overlying Connective Tissue
17
Q

What forms the Medial (Ulnar) Collateral Ligament of the Elbow?

A

A Thickening of the Medial Fibrous Joint Capsule

18
Q

Where does the Medial (Ulnar) Collateral Ligament:

  1. Originate from?
  2. Attach to?
A
  1. Medial Epicondyle
  2. a) Coronoid Process of the Ulna
  3. b) Olecranon of the Ulna
19
Q

What forms the Lateral (Radial) Collateral Ligament of the Elbow?

A

A Thickening of the Lateral Fibrous Joint Capsule

20
Q

Where does the Lateral (Radial) Collateral Ligament:

  1. Originate from?
  2. Bend with?
A
  1. Lateral Epicondyle

2. Annular Ligament of the Radius

21
Q

What is the function of the Collateral Ligaments?

A

Stabilizing the Flexion and Extension Movement of the Elbow

22
Q

Which Ligament holds the Head of the Radius?

A

Annular Ligament

Note - For more information on the Annular Ligament look up “2.5. The Radio-Ulnar Joint”

23
Q

What is the Arterial Supply to the Elbow Joint?

A

Cubital Anastomosis

24
Q

What is the Cubital Anastomosis formed of?

A

Recurrent and Collateral Branches from the Brachial and Deep Brachial Arteries

25
Q

What is the Nerve Supply to the Elbow Joint?

A
Anteriorly:
1. Median Nerve
2. Radial Nerve
3. Musculocutaneous Nerve
Posteriorly:
1. Ulnar Nerve
26
Q

What movement occurs at the Elbow Joint?

A
  1. Flexion

2. Extension

27
Q

What muscles cause Flexion at the Elbow Joint?

A

Brachioradialis + Muscles of the Anterior Compartment of the Arm:

  1. Biceps Brachii
  2. Brachialis
  3. Coracobrachialis
28
Q

What muscles cause Extension at the Elbow Joint?

A

Muscles of the Posterior Compartment of the Arm:

  1. Triceps Brachii
  2. Anconeus
29
Q

Do Pronation and Supination occur at the Elbow Joint?

A

No, they are produced at the nearby Radio-Ulnar Joint

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