Ligament location and Their Functions

Question 1

Coracoclavicular ligament (Pectoral girdle)

Answer 1

Function: Stabilizes acromioclavicular joint by limiting medial displacement, protraction, and elevation of that joint, includes 2 ligaments
1. Trapezoid ligament: From coracoid process to trapezoid line of clavicle
2. Conoid ligament: From coracoid process to conoid tubercle of clavicle

Question 2

Acromioclavicular ligament (Pectoral girdle)

Answer 2

From superior aspect of lateral/acromial end of the clavicle to adjacent acromion process
Function: Stabilizes acromioclavicular joint
Shoulder separation is damage to this structure usually due to a FOOSH mechanism
A hard Fall On an OutStretched Hand (FOOSH), also landing on shoulder

Question 3

Coracoacromial ligament (Pectoral girdle)

Answer 3

From lateral border of coracoid process to acromion process (adjacent to clavicular articulation)
Function: Prevent the superior displacement of the humeral head by forming the coracoacromial arch

Question 4

Coracohumeral ligament (Pectoral girdle)

Answer 4

From base of coracoid process to anterior aspect of the greater tubercle
Function: Reinforces superoanterior aspects of the joint capsule

Question 5

Costoclavicular ligament (Pectoral girdle)

Answer 5

From superior aspect of cartilage of first rib to undersurface of the clavicle
Function: Stabilizes sternoclavicular joint, limiting elevation of the clavicle

Question 6

Superior transverse ligament (Pectoral girdle)

Answer 6

From the base of the coracoid process to the medial edge of the scapular notch
Function: Closes off the supra scapular notch (where the subscapular artery above, and subscapular nerve below run through to make it to the posterior side of the body)

Question 7

Glenoid capsule (Pectoral girdle)

Answer 7

From the circumference of the glenoid cavity (fossa) to anatomical neck of the humerus
Function: Articular capsule that surrounds joint to stabilize and lubricate joint

Question 8

Glenohumeral ligament (Pectoral girdle)

Answer 8

Three ligaments superior, middle, and inferior
Function: Stabilizes glenohumeral articulation specifically the anterior portion

Question 9

Ulnar Collateral Ligament (Elbow and Forearm)

Answer 9

From medial epicondyle to medial margin of coronoid process & olecranon process
Functions: Resists excessive cubital valgus

Question 10

Radial Collateral Ligament (Elbow and Forearm)

Answer 10

From lateral epicondyle to anular ligament (on radius)
Function: Resists excessive cubital valgus

Question 11

Anular Ligament (Elbow and Forearm)

Answer 11

From the anterior margin of the radial notch to posterior margin of notch, surrounding head of radius
Function: Stabilizes proximal radioulnar joint

Question 12

Interosseous membrane (Elbow and Forearm)

Answer 12

From interosseous border of radius to interosseous border of ulna
Function: Reduces the forces placed on the radiocapitellar articulation, thereby protecting the joint

Question 13

Transverse Carpal Ligament

Answer 13

From pisiform & hook of the hamate to scaphoid & trapezium
Function: Prevents bowstringing of the tendons of the flexor pollicis longus, flexor digitorum superficialis & flexor digitorum profundus muscles

Question 14

Collateral ligaments of the metacarpophalangeal joints

Answer 14

From the head of the metacarpals to base of adjacent proximal phalanx
Function: Stabilizes metacarpophalangeal joints