SHOULDER KINES REVIEW QUIZ Flashcards
One function of the scapulothoracic joint is to:
Group of answer choices
Provide downward rotation during shoulder girdle elevation
Move independent of the glenohumeral (GH) joint motion to increase overall ROM
Orient the glenoid fossa for optimal contact with the humeral head when moving the arm
Maintain the length of the deltoid during arm elevation
Orient the glenoid fossa for optimal contact with the humeral head when moving the arm
Which of the following best describes the structure of the glenohumeral (GH) joint?
The glenoid labrum is a thin hyaline cartilage structure.
The joint surfaces of the GH joint are naturally congruent and stable.
The glenoid fossa, by itself, is three times larger than the humeral with which it articulates.
The glenoid labrum enhances the depth of the glenoid fossa.
The glenoid labrum enhances the depth of the glenoid fossa.
Which of the following is a function of the rotator cuff during shoulder girdle elevation?
Group of answer choices
Produces downward rotation of the scapula during shoulder girdle motion
Functions with the deltoid to produce a superior translation of the humeral head during shoulder girdle elevation
Balances the deltoid activity by providing a stabilizing force on the humeral head that allows for pure rotation of the humeral head on the glenoid during shoulder girdle elevation
Produces scapular upward rotation during shoulder girdle motion
Balances the deltoid activity by providing a stabilizing force on the humeral head that allows for pure rotation of the humeral head on the glenoid during shoulder girdle elevation
Which of the following muscles produce upward scapular rotation when the shoulder girdle is elevated from 90° to 180°?
Deltoid and rotator cuff muscles
Upper trapezius and serratus anterior
Upper trapezius, lower trapezius, and serratus anterior
Teres major and teres minor
Upper trapezius, lower trapezius, and serratus anterior
Anterior scapular tipping is normally ____________________ from vertical and directly affects motion at the ____________________ joint.
35° to 45°, acromioclavicular
35° to 45°, glenohumeral
10° to 15°, glenohumeral
10° to 15°, acromioclavicular
10° to 15°, acromioclavicular
Which of the following muscles assists in counteracting the upward translatory force caused by the deltoid muscle at the glenohumeral joint?
Group of answer choices
Supraspinatus
Teres minor
Serratus anterior
Coracobrachialis
Teres minor
Which joint/s connect the upper extremity to the axial skeleton
Group of answer choices
The sternoclavicular and acromioclavicular joints
The sternoclavicular, acromioclavicular, scapulothoracic joints and glenohumeral joints
The sternoclavicular joint
The sternoclavicular, acromioclavicular and scapulothoracic joints
The sternoclavicular joint
The orientation of the glenoid fossa
Group of answer choices
Is parallel to the sagittal plane
Is titled upward and anteriorly
Is titled upward and posteriorly
Is parallel to the frontal plane
Is titled upward and anteriorly
Normal torsion of the humerus
Group of answer choices
Allows for more internal rotation than external rotation
Enhances joint stability
Increases the likelihood of fracture
Allows for more external rotation than internal rotation
Enhances joint stability
Which of the following glenohumeral motions is clearly abnormal
Group of answer choices
Extension 22 degrees
External rotation 93 degrees
Internal rotation 68 degrees
Flexion 158 degrees
Flexion 158 degrees
What is meant by scaption
Group of answer choices
Upper extremity elevation in the plane of the glenoid fossa
Upper extremity elevation that enhances joint stability
Upper extremity elevation in the plane of the scapula
Upper extremity elevation that enhances capsular torsion
Upper extremity elevation in the plane of the scapula
The subacromial arch covers multiple vital structures in a very small space. What must occur during motion to protect these structures
Group of answer choices
The upper extremity must externally rotate and the humeral head must translate inferiorly during abduction above 90 degrees
The supraspinatus must counteract the pull of the deltoid during abduction
The deltoid must translate the humeral head superiorly during abduction
The scapula must tilt anteriorly during the last degrees of upper extremity elevation
The upper extremity must externally rotate and the humeral head must translate inferiorly during abduction above 90 degrees
The rotator cuff includes
Group of answer choices
Three muscles: subscapularis, supraspinatus, teres major
Three muscles: subscapularis, supraspinatus, teres minor
Four muscles: subscapularis, supraspinatus, teres minor, infraspinatus
Four muscles: subscapularis, supraspinatus, teres major, infraspinatus
Four muscles: subscapularis, supraspinatus, teres minor, infraspinatus
Suppose the supraspinatus and deltoid are the only active upper extremity muscles during abduction. What would you expect to see
Group of answer choices
The arm will abduct to 90 degrees but no further
The arm will smoothly abduct through full range of motion
The arm will not be able to initiate the motion
First, the shoulder will appear to shrug and then abduction will follow
First, the shoulder will appear to shrug and then abduction will follow
What is a force couple?
Group of answer choices
Any combination of forces that result in rotation with translation
Two forces, equal in magnitude, in the same direction, on the same side of the joint axis
Two forces, equal in magnitude but in opposite directions, on opposite sides of the joint axis tending to cause rotation
Any combination of forces that result in internal and external rotation in a joint
Two forces, equal in magnitude but in opposite directions, on opposite sides of the joint axis tending to cause rotation
