MSC ORT Exam 3 Shoulders UPDATED ACTUAL Exam Questions and CORRECT Answers

MSC ORT Exam 3 Shoulders UPDATED
ACTUAL Exam Questions and CORRECT
Answers
The shoulder relies on this to maintain its stability - CORRECT ANSWER - relies very
little on bony and ligamentous structures and majority of support coming from 18 muscles acting
on the shoulder complex


Basic motions of shoulder - CORRECT ANSWER - flexion, extension, abduction,
adduction, horizontal flexion, horizontal extension


average neck angle for humerus - CORRECT ANSWER - 135 degrees


Proximal humerus is on average, how many degrees of retroversion - CORRECT
ANSWER - 30



Glenoid - CORRECT ANSWER - pear shaped
has different curvature
7 degrees of retroversion
5 degrees of superior tilt
humeral head articulates no more than 30% of articular surface in any position with the glenoid


3 purposes of glenoid labrum - CORRECT ANSWER - anti-shear
attachment of glenohumeral ligaments
increase surface contact


What is the labrum made out of you Fuucking idiot - CORRECT ANSWER -
fibrocartilage

, Glenohumeral biomechanics - CORRECT ANSWER - F-H = Offset
B-C = head thickness
D-E = height 8mm


Three shoulder ligaments - CORRECT ANSWER - Achromioclavicular ligament
Coracoclavicular ligaments
-Trapezoid ligaments
-Conoid ligament
Coracoacromial ligament


What ligaments form the shoulder capsule - CORRECT ANSWER - glenohumeral
ligaments


Deltoid - CORRECT ANSWER - longest and strongest shoulder muscle
3 muscular heads surround proximal humerus
wide range of motions
works in concert with rotator cuff


The rotator cuff - CORRECT ANSWER - four muscle and their tendons
Supraspinatus
Infraspinatus
Teres minor
Subscapularis
(SITS)


Supraspinatus - CORRECT ANSWER - attaches to superior facet on greater tubercle of
humerus
Assists deltoid in abduction, acts with rotator cuff muscles