5-1 Elbow Joint

Question 1

What are the three articulations that make up the elbow joint?

Question 2

What type of movement is primarily allowed by the joint between the trochlear notch of the ulna and the trochlea of the humerus?

Question 3

Name the three main bones that form the articulations of the elbow joint.

Question 4

What type of joint is the elbow?

Question 5

Q: Which two fossae are involved in the upper attachment of the anterior joint capsule?

Question 6

What is the function of the proximal radio-ulnar joint?

Question 7

Where does the joint capsule attach on the ulna; consider anteriorly and posteriorly.

Question 7

To which parts of the humerus does the fibrous membrane of the joint capsule attach; consider anteriorly and posteriorly.

Question 8

What are the two main types of movements facilitated by the elbow joint?

Question 9

Where does the joint capsule attach on the radius; consider anteriorly and posteriorly.

Question 10

what are the ligaments of the elbow joint?

Answer 10

Lateral and Medial ligaments.

Question 11

where does the lateral ligament of the elbow joint attach to?

Answer 11

lateral epicondyle of humerus, and
the upper margin of the annular ligament.

Question 11

where does the medial ligament of the elbow joint attach to?

Answer 11

Anterior Band: Medial epicondyle to the medial margin of the coronoid
process.
Posterior Band: Medial epicondyle to the medial side of the olecranon.
Transverse Band: Connects ulnar attachments of anterior and posterior
bands.

Question 11

how many bands does the medial ligament of the elbow joint consist of?

Answer 11

3; Anterior, posterior, transverse.

Question 12

How is the synovial membrane of the elbow joint connected to the proximal radioulnar joint?

Answer 12

The synovial membrane of the elbow is continuous with the synovial membrane of the proximal radioulnar joint below.

Question 13

Where does the synovial membrane of the elbow joint extend to, and what structures does it cover?

Answer 13

The synovial membrane lines the capsule and covers the fatty pads in the floors of the coronoid, radial, and olecranon fossae.

Question 14

Which nerves innervate the elbow joint?

Answer 14

Branches from the median, ulnar,
musculocutaneous, and radial nerves

Question 15

What type of vascular network supplies blood to the elbow joint?

Answer 15

an anas­tomotic network of vessels derived from collateral and recurrent branches of the brachial, profunda brachii, radial, and ulnar arteries.

Anastomoses formed by;
1. Superior ulnar collateral artery with posterior ulnar recurrent artery
2. inferior ulnar collateral artery with anterior ulnar recurrent artery
3. radial collateral artery with middle collateral, recurrent interosseous
4. Radial recurrent artery with radial collateral artery

Question 16

which muscles perform elbow flexion?

Answer 16

brachialis, biceps brachii, brachioradialis, and pronator teres muscles.

Question 17

which muscles perform elbow extension?

Answer 17

triceps and anconeus muscles

Question 18

What are the bursae of the elbow joint?

Answer 18

there are many but the most commonly known due to giving rise to problems are the;
olecranon bursae which are three:
1. subtendinous
2. intratendinous
3. subcutaneous

Question 20

what are the three radioulnar joints?