Upper Extremity Structure + Function QUIZ

Question 1

during shoulder elevation in the sagittal plane, one would expect to see

-clavicular anterior rotation
-scapula retraction + upward rotation
-scapula upward rotation
-glenohumeral external rotation

Answer 1

scapula upward rotation

Question 2

pectoralis major contributes to all of the following shoulder motions EXCEPT

-external rotation
-flexion
-internal rotation
-extension

Answer 2

external rotation

Question 3

when the arm is by your side, passive resistance to downward shear (forces pulling downward) of the humeral head relative to the glenoid is predominantly provided by

-inferior glenohumeral ligament
-coracohumeral ligament
-gravity
-superior glenohumeral ligament

Answer 3

superior glenohumeral ligament

Question 4

during abduction of the humerus, scapula motion

-restriction of scapula motion will have no effect on the ability of the deltoid to generate torque
-will help maintain the length tension of the deltoid
-scapula motion has no effect on the length of the deltoid
-will in fact tend to decrease the length of the deltoid

Answer 4

will help maintain the length tension of the deltoid

Question 5

in the typical healthy elbow, extension is limited by

-soft-tissue stretch of the biceps
-tension of the interosseus membrane
-the impact of the coronoid process against the coronoid fossa
-the impact of the olecranon process on the olecranon fossa

Answer 5

the impact of the olecranon process on the olecranon fossa

Question 6

when attempting to generate maximum forearm supination effort which muscle must also act to counteract the forces of the biceps

-elbow extensors
-wrist extensors
-wrist flexors
-elbow flexors

Answer 6

elbow extensors

Question 7

when in the anatomical position, the angle formed between the humerus + the arm is termed the “carrying angle”. which of the statements is TRUE about the “carrying angle”?

-this angle is described as a varus angle at the elbow
-if this angle is excessive it is termed cubitus varus
-the carrying angle is typically greater in females than males
-the carrying angle increases with pronation + elbow flexion

Answer 7

the carrying angle is typically greater in females than males

Question 8

consider the arthrokinematics of the GH joint. during your patient evaluation you discover that there is a limitation to downward (inferior) glide of the humerus on the glenoid. you quite rightly suspect that

-the patient has diabetes
-the patient will have a loss of internal rotation of the humerus
-there will be winging of the scapula during shoulder motion
-the patient will have difficulty moving the GH joint in the frontal plane

Answer 8

the patient will have difficulty moving the GH joint in the frontal plane

Question 9

your patient has lost the ability to rotate posteriorly (backward) at the sternoclavicular joint. the most likely impact of this is

-shoulder internal rotation will be decreased
-you will observe increased scapular upward rotation during shoulder elevation
-there will be no effect on shoulder complex motion
-the patient will lose shoulder elevation above 90 degrees

Answer 9

the patient will lose shoulder elevation above 90 degrees

Question 10

“jersey finger” is an injury to flexor digitorum profundus. this injury results in

-loss of active extension of the DIP
-loss of active flexion of the DIP
-complete loss of finger flexion
-a “buttonhole” deformity at the PIP joint

Answer 10

loss of active flexion of the DIP