Ligaments of Upper Extremity

Question 1

Coracoclavicular - Function

Answer 1

stabilizes acromioclavicular joint limiting medial displacement, protraction & elevation

Question 2

Coracoclavicular - Attachments

Answer 2

1. Trapezoid
   attachments- from coracoid process to trapezoid line of clavicle
2. Conoid
   attachments- from coracoid process to conoid tubercle of clavicle

Question 3

Acromioclavicular - Function

Answer 3

stabilizes acromioclavicular joint

Question 4

Acromioclavicular - Attachments

Answer 4

from superior aspect of acromial end of the clavicle to adjacent acromion

Question 5

Coracoacromial - Function

Answer 5

prevents the superior displacement of the humeral head by forming the coracoacromial arch

Question 6

Coracoacromial - Attachments

Answer 6

from lateral border of coracoid process to acromion adjacent to clavicular articulation

Question 7

Coracohumeral - Function

Answer 7

reinforces superoanterior aspects of joint capsule

Question 8

Coracohumeral - Attachments

Answer 8

from base of coracoid process to anterior aspect greater tubercle

Question 9

Costoclavicular - Function

Answer 9

stabilizes sternoclavicular joint, limiting elevation of the clavicle

Question 10

Costoclavicular - Attachments

Answer 10

from superior aspect of cartilage of first rib to undersurface of the clavicle

Question 11

Superior transverse scapular - Function

Answer 11

closes off the suprascapular notch

Question 12

Superior transverse scapular - Attachments

Answer 12

from the base of the coracoid process to the medial edge of the scapular notch

Question 13

Glenoid capsule - Attachments

Answer 13

from the circumference of glenoid cavity to anatomical neck of the humerus

Question 14

Glenohumeral (three ligg.; superior, middle, inferior) - Function

Answer 14

stabilizes glenohumeral articulation

Question 15

Glenohumeral (three ligg.; superior, middle, inferior) - Attachments

Answer 15

from upper part of medial margin of glenoid cavity to lesser tubercle & anatomical neck

Question 16

Ulnar collateral - Function

Answer 16

resists excessive cubital valgus

Question 17

Ulnar collateral - Attachments

Answer 17

from medial epicondyle to medial margin of coronoid process & olecranon process

Question 18

Radial collateral - Function

Answer 18

resists excessive cubital varus

Question 19

Radial collateral - Attachments

Answer 19

from lateral epicondyle to anular ligament

Question 20

Annular - Function

Answer 20

stabilizes proximal radioulnar joint

Question 21

Annular - Attachments

Answer 21

from the anterior margin of the radial notch to posterior margin of radial notch surrounding head of radius

Question 22

Interosseous membrane - Attachments

Answer 22

from interosseous border of radius to interosseous border of ulna

Question 23

Transverse carpal - Function

Answer 23

prevents bowstringing of the tendons of the flexor pollicis longus, flexor digitorum superficialis & flexor digitorum profundus muscles

Question 24

Transverse carpal - Attachments

Answer 24

from the pisiform & hook of the hamate to scaphoid & trapezium

Question 25

Collateral ligaments of the metacarpophalangeal joints - Function

Answer 25

stabilizes metacarpophalangeal joints

Question 26

Collateral ligaments of the metacarpophalangeal joints - Attachments

Answer 26

from the head of the metacarpals to base of adjacent proximal phalanx