EXAM 3 - hyper mobile shoulder

Question 1

what is the balance stability angle

Answer 1

the max angle between the glenoid center line and the net humeral joint reaction force before the humerous dislocates

Question 2

what is the anterior compressor

Answer 2

subscap

Question 3

what is the posterior compressor

Answer 3

infra and teres minor

Question 4

what is the superior compressor

Answer 4

supra

Question 5

what does concavity have to do with stablity

Answer 5

deeper the concavity the greater the displacement force for a compressive load

the greater the displacement force needed

Question 6

what is the stablity ratio

Answer 6

displacing force/compressive load

Question 7

what are the passive restraints to the shoulder

Answer 7

labrum

boney geometry

capsulo-ligamentous structures

negative intra-art pressure

Question 8

what direction does the humeral head face

Answer 8

superior
medially
posteriorly

Question 9

what is the function of scapular rotation

Answer 9

allows the glenoid to remain under the humeral head

Question 10

ER - 0 restriants

Answer 10

CH
SGHL
subscapularis

Question 11

ER - 45 restraints

Answer 11

MGHL

Question 12

ER - 90 restraints

Answer 12

anterior band of IGHL

Question 13

when is the subscap an effective restraint

Answer 13

when the arm is at its side

Question 14

rotator interval

Answer 14

a triangluar area between the subscap and the base of the coracoid

this is one of the most common areas of disloaction

Question 15

what is the action of the biceps tendon

Answer 15

increases torsional ridgity

Question 16

what is torsional ridgity

Answer 16

the ability of an object to resist twisting when acted upon by an external force, torque

Question 17

what happens to the bicep tendon with there is a slap lesion

Answer 17

the effect of the biceps tendon is lost

Question 18

what is the most traumatic type of shoulder instablity

Answer 18

posterior

Question 19

onset of instablity

Answer 19

traumatic

atraumatic

repetitive microtrauma/overuse

Question 20

what does TUBS stand for

Answer 20

traumatic

unitlateral

bankart lesion

surgical repair

Question 21

what is a bankart lesion

Answer 21

a tear that happens in the lower rim of the labrum.

the rim of the glenoid is being torn off and the humeral head is moving forward

Question 22

AMBRI stands for

Answer 22

atraumatic

Multidirectional

bilateral

rehab

inferior capsular shift

Question 23

how do we test for multi-direction instability

Answer 23

sulcus sign

Question 24

Anterior mechnism

Answer 24

Posteriorly directed force with the arm abd and ER

this can also occur with issue from behind

Question 25

Posterior mechnism

Answer 25

Posterior directed force with arm flexed and IR

Question 26

inferior mechanism

Answer 26

Inferior force with the arm in abd

Question 27

how to test for general glenoid instability

Answer 27

load and shift test

Question 28

how to test for anterior instability

Answer 28

anterior drawer anterior apprehension

Question 29

how to test for posterior instablity

Answer 29

posterior drawer combo: posterior apprehension, jerk test, kim test

Question 30

slap lesion MOI

Answer 30

o Fall on outstretched arm o Traction on long head of biceps associated with overhead throwing activity o Internal impingement o “Peel back” of labrum due to twisting of biceps tendon during abduction/ER

Question 31

slap lesion symptoms

Answer 31

o Pain & mechanical catching/grinding (50% of cases)

Question 32

test we can use for a slap lesion

Answer 32

o O’Brien’s test o Crank test o Biceps load test o Biceps load test II anterior slide test

Question 33

what is a positive obrein's test

Answer 33

AC pain or pain/click deep in the joint

Question 34

top of the shoulder pain obrein's

Answer 34

AC joint lesion

Question 35

what is a positive anterior slide test

Answer 35

pain and/or click in front of shoulder in front of shoulder

Question 36

crank test arm position

Answer 36

160 abd

Question 37

biceps load positive test

Answer 37

pain with biceps activation

Question 38

what are the two tests that look at the long head of the biceps tendon

Answer 38

speed test yergasons