Shoulder

Question 1

What does the conoid ligament prevent?

Answer 1

conoid resists elevation and protraction

Question 2

What does the trapezoid ligament do?

Answer 2

provides AC joint compression

Question 3

What does the acromioclavicular ligament do?

Answer 3

covers joint capsule and reinforces superior aspect

Question 4

What do the costoclavicular ligaments do at the clavicle during clavicular elevation

Answer 4

tension from these ligaments results in posterior rotation of the clavicle along its axis and resist upwards rotated forces from scapula

Question 5

What ligament attaches the first rib to the clavicle and creates a lever to allow the lateral end of the clavicle to elevate

Answer 5

costoclavicular ligaments

this is why treating first rib mobility can impact elevation of the shoulder

Question 6

where does the scapula normally rest on your ribs

Answer 6

Between T2 and T7, with the spine at T3

Question 7

What plane of motion does the arm need to move through to work the scapulothoracic joint effectively

Answer 7

“scaption”, out at 45 degrees of horizontal adduction

Question 8

What do we see here R and L?

Answer 8

Scoliosis

R side is protracted and upwardly rotated

L side is downwardly rotated

Question 9

What kind of glide do we use for improving flexion and internal rotation of the shldr

Answer 9

posterior glide

Question 10

what kind of glide do we use to improve abduction

Answer 10

Inferior glide

Question 11

What is the close packed position of the GH joint

Answer 11

90 abd, full ER

AND

full ABD and full ER

Question 12

What might we see in the shoulder of a thrower

Answer 12

more ER and less IR

we do not want to stretch IR too much because the overall motion should be 180 degrees, if we give them more than that then they will have instability

Question 13

What is the overall motion of scapulo thoracic rhythm

Answer 13

2 degrees of humeral motion for every 1 degree of scapular motion

Question 14

What muscle can limit the first rib and therefore lock the shoulder down

Answer 14

subclavius

Question 15

The humerus needs to be ____________ to clear the greater tuberosity of the acromion

Answer 15

in 35-45 ER

Question 16

During the initial 20-30 degrees of humeral elevation, _____________ occurs

Answer 16

no scapular motion

Question 17

60 degrees of scapulothoracic motion also includes ________ of SC elevation and __________ of AC posterior/upward rotation

Answer 17

25 degrees of SC elevation

35 degrees of AC posterior rotation

Question 18

What do the infraspinatus, teres minor, and subscapularis do in the Deltoid-rotator cuff force couple?

Answer 18

provide a inferior/medial force that counteracts the superior force of the deltoid

Question 19

We need to train the rotator cuff muscles to do what they’re actually meant to do with arm motion, which is…

Answer 19

center the GH joint

Question 20

What does the supraspinatus do in the deltoid-rotator cuff force couple

Answer 20

direct compression force to approximate the humerus

Question 21

which direction does the deltoid pull on the GH joint

Answer 21

pulls upward and outward

Question 22

Which rotator cuff muscles are most essential to counteract the deltoid force and stabilize the shoulder

Answer 22

Infraspinatus, teres minor, subscapularis

Question 23

What 3 muscles rotate the scapula upward

Answer 23

Serratus anterior

upper and lower trap

FOCUS ON WORKING THESE MUSCLES TOGETHER

Question 24

what is the MAIN function of the upper trap, and the movement we want to work when focusing on it

Answer 24

upwards rotation of scapula with arm overhead

Question 25

What muscle group pair works as a suspension bridge to provide a stable fulcrum to allow for rotation of humeral head on glenoid

Answer 25

Anterior/posterior rotator cuff force couple Subscap in the front Infraspinatus and teres minor in the back they depress the humeral head and compress head into the glenoid

Question 26

Which part of the serratus anterior is more active with upwards rotation, which is more active with protraction

Answer 26

Lower fibers upper fibers

Question 27

T or F: Dr. P thinks that banded internal rotation at your side is a good way to hit the subscapularis

Answer 27

F, the larger internal rotators like the pecs and lats will take over

Question 28

how should we work the upper trap in the clinic

Answer 28

work on upper trap in overhead position to work on what it is actually suppose to do

Question 29

What muscles are we targeting with no-monies, what muscle do we not want to turn on for compensation

Answer 29

Posterior cuff Rhomboids Should not see retraction!

Question 31

What muscle (when tight) can prevent posterior tipping of the scapula during shoulder elevation

Answer 31

Pec minor

Question 32

What 3 motions happen at the scapula w/ overhead motion

Answer 32

Protraction Upward rotation Posterior tilt

Question 33

What muscle stabilizes the anterior shoulder

Answer 33

Subscapularis

Question 34

When does winging of the scapula occur?

Answer 34

Only when moving overhead, there is no scapular winging at rest