Shoulder

Question 1

Humerus articular surface is covered by what kind of cartilage?

Answer 1

Hyaline

Question 2

Humerus head is retroverted how many degrees?

Answer 2

20-30

Question 3

Longitudinal axis of head of humerus is how many degrees from axis of neck?

Answer 3

135

Question 4

Orientation of glenoid fossa places true abduction at how many degrees anterior to frontal plane?

Answer 4

30

Question 5

Sternoclavicular joint is convex when? and concave when?

Answer 5

Convex: superior/inferior
Concave: anterior/posterior

Question 6

Sternoclavicular joint articulations are covered with what type of cartilage?

Answer 6

Fibocartilage

Question 7

Acriomoclvacilar is what kind of joint?

Answer 7

Plane joint

Question 8

GH Capsule attaches medially where? Laterally where?

Answer 8

Medially: glenoid margin, glenoid labrum, coracoid process
Laterally: humeral anatomical neck and 1 cm on shaft

Question 9

Attachments of coracohumeral ligaments

Answer 9

Base of coracoid process to greater and lesser tubercle of humerus

Question 10

Primary function of coracohumera liament?

Answer 10

1. Reinforce biceps tendon

2. Reinforce superior capsule to prevent caudal disolocation

Question 11

What is the coracohumeral ligament taut?

Answer 11

ER

Question 12

Why is coracoacormial ligament not a true ligament?

Answer 12

Connects two points of same bone?

Question 13

Glenohumeral ligaments - what are they? (3)

Answer 13

Superior middle and inferior

Question 14

Where are the 3 glenohumeral ligaments

Answer 14

Anterior glenohumeral joint

Question 15

What is the function of the glenohumeral ligament?

Answer 15

Reinforce anterior glenohumeral capsule

Question 16

Where is the transverse humeral ligament?

Answer 16

Over the top of the bicepital groove

Question 17

Function of transvere humeral ligament

Answer 17

Retinaculum for long biceps tendon

Question 18

What kind of cartilige is the glenoid labrum?

Answer 18

Fibrocarilaginous

Question 19

Where does the labrum attach?

Answer 19

Superioraly, inferiorly and long head of biceps tendon superiorly

Question 20

Primary shoulder burs a is what? Where is it?

Answer 20

Subacromial - btwen deltoid and capsule. Under acromion and coracoacromial ligament and between supraspinatis tendon.

Question 21

At what degree of shoulder elevation does ER occur? Why?

Answer 21

75 degrees, prevents compression of greater tubercle against acromion

Question 22

Scapulohumeral rhythm: 1st 30-60 degrees elevation occurs where?

Answer 22

GH join

Question 23

What percent of total movement is GH and what is ST?

Answer 23

120 glenohumeral, 60 ST