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
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
