Elbow Joint

Question 1

What are the 3 articular surfaces of the elbow joint

Answer 1

1. Humeroulnar joint- Trochlear notch of the ulna and trochlea and the humerus
2. Humeroradial joint- capitulation of humerus and radial head
3. Head of radius and radial notch of the ulna

Question 2

The articular surfaces of the elbow joint are covered with

Answer 2

Hyaline cartilage

Question 3

The joint capsule of the elbow joint is attached to the humerus at

Answer 3

The margins of the lateral and medial articular surfaces of the trochlea and capitulum

Question 4

The fibrous membrane of the joint capsule is thickened medially and lateral to form

Answer 4

Collateral ligaments, which supports he flexion and extension movements of the elbow joint

Question 5

The synovial membrane of the joint capsule of the elbo joint continues inferiorly with

Answer 5

The synovial membrane of the proximal radio-ulnar joint

Question 6

The joint capsule is weak anteriorly and posteriorly but is strengthened on both sides by

Answer 6

Collateral ligaments

Question 7

The synovial membrane is separated from the fibrous membrane of the joint capsule by

Answer 7

Pads of fat in regions overlying the Coronoid fossa, olecranon fossa, radial fossa

Question 8

Function of the fat pads separating the joint capsule and synovial membrane

Answer 8

They accommodate the related bony processes during extension and flexion of the elbow

Question 9

What are the ligaments of the elbow

Answer 9

Radial collateral ligament
Medial collateral ligament
Annular ligament

Question 10

Function of the radial collateral ligament

Answer 10

It maintains the relationship between the humerus and radial head

Question 11

What are the 3 band of the Ulnar collateral ligament

Answer 11

Anterior- cord like and strongest
Posterior- fan like and weakest
Slender oblique band- which deepens the socket for the trochlea of humerus

Question 12

Ulnar collateral ligament extends from where to where

Answer 12

From the medial epicondyle of the humerus to the coronoid process and olecranon of the ulna

Question 13

Function of annular ligament

Answer 13

It hold the head of radius is radial notch
It permits pronation and supination of the forearm

Question 14

What is the blood supply to the elbow joint

Answer 14

Through an anastomotic network of vessels derived from collateral and recurrent breaches of the brachial, profunda brachii, radial and Ulnar arteries

Question 15

Nerve supply to the elbow joint

Answer 15

Branches of the radial and musculocutaneous nerves but there may be some innervation by branches of the medial and Ulnar nerves

Question 16

Bursae around the elbow joint

Answer 16

Intratendinous olecranon bursa
Subtendinous olecranon bursa
Subcutaneous olecranon bursa

Question 17

The bicipitoradial bursa separates

Answer 17

The biceps tendon and anterior part of the radial tuberosity