Elbow Complex

Question 1

What are the articulations in the elbow joint complex? What shape are the surfaces?

Answer 1

humeroulnar: convex/concave
humeroradial: convex/concave
proximal radioulnar: convex/concave

Question 2

What are the expected ranges of motion in elbow flexion and extension?

Answer 2

flexion: 150 degrees
extension: 0-10 degrees

Question 3

What are the expected ranges of motion in supination and pronation at the elbow?

Answer 3

90 degrees

80-90 for pronation

Question 4

What is the capsular pattern of restriction for the humeroulnar and humeroradial joints?

Answer 4

flexion > extension

Question 5

What is the capsular pattern of restriction for the proximal radioulnar joint?

Answer 5

supination = pronation

Question 6

What is resting position for the humeroulnar joint?

Answer 6

70 degrees of flexion

Question 7

What is resting position for the humeroradial joint?

Answer 7

full extension & supination

Question 8

What is resting position for the proximal radioulnar joint?

Answer 8

35 degrees of supination & 70 degrees of flexion

Question 9

What is closed pack position for the humeroulnar joint?

Answer 9

full extension

Question 10

What is closed pack position for the humeroradial joint?

Answer 10

90 degrees of exlion

Question 11

What is closed pack position for the proximal radioulnar joint?

Answer 11

5 degrees of supination

Question 12

Distraction of the humeroulnar joint will be done with the elbow in what position?

Answer 12

45 degrees, roughly

Question 13

When the hand is placed near/around the olecranon process, what is one important precaution?

Answer 13

avoiding compression of the cubital tunnel (ulnar nerve)