Anatomy: Joints of the Upper Extremity

Question 1

Glenohumeral Joint

Label the things that have been blocked out

Explain them further

Answer 1

1. Coracohumeral Ligament: ncorocoid process to greater tuburcle humerus
2. Transverse humeral ligament: holds tendon from bicep in place
3. Joint capsule: surrounds joint, allows for flexion, extension, adduction/abduction, protraction and retraction

Question 2

The glenohumeral joint is the _____ joint

What kind of joint is it?

What kind of movement does it permit?

Answer 2

Glenohumeral joint is the shoulder joint

It is mutiaxial, synovial, ball and socket joint

Most easily dislocated joint

Movement: flexion/extension, adduction/abduction, protraction/retraction, circumduction

Question 3

What are the major ligaments of the AC Joint?

Answer 3

Major ligaments of the AC Joint;

Acromioclavicular Ligament

Coracoclavicular Ligament

When you seperate your shoulder, you seperate the AC joint

Question 4

Label the following on the blacked out image:

glenohumeral ligament

glenoid labrum

bursae

Explain a little more about each

Answer 4

1. Glenohumeral ligament: glenoid to humerus
2. Glenoid labrum: fibrocartilaginous ligament surrounding the glenoid cavity, deepens socket, increases SA
3. Bursae: allowing for greater ease of movement

Question 5

What are all the ligaments you have in your glenohumeral joint?

Answer 5

Glenohumeral joint ligaments:

Coracohumeral Ligament

Transverse humeral ligament

Glenohumeral ligament

Question 7

The trapezialmetacarpal joint is what kind of joint

Answer 7

Trapeziusmetacarpal joint:

Bi-axial saddle joint

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