Quiz 3: Shoulder Complex
(114).jpg "Quiz 3: Shoulder Complex")
The shoulder complex is an intricately designed combination of three joints that link the upper extremity to the thorax – it is composed of the clavicle, scapula and humerus. What can you tell us about the complex?
- 1.To test the middle deltoid against gravity for a muscle grade of 4 or 5 for Anterior Deltoid (shoulder flexion) or Middle Deltoid (shoulder abduction) you need to position shoulder at:
- A.
90 degrees of shoulder humeral flexion or shoulder humeral abduction
- B.
180 degrees of shoulder humeral flexion or shoulder humeral abduction
- C.
45 degrees of shoulder humeral flexion or shoulder humeral abduction
- D.
120 degrees of shoulder humeral flexion or shoulder humeral abduction
- 2.What is shoulder sublaxation?
- A.
Shoulder sublaxation is complete separation of the GH joint where the head of the humerus is torn from the glenoid fossa
- B.
Shoulder sublaxation is incomplete or partial separation of the GH joint where the head of the humerus has partially slipped out of the glenoid fossa without tearing or rupturing of soft tissue structures
- C.
Shoulder sublaxation occurs when the AC joint is dislocated.
- D.
Shoulder sublaxation occurs when the SC joint is dislocated and/or the clavicle is fractured
- 3.All of the following muuscles are involved in the motion of shoulder (humeral) flexion, except:
- A.
Anterior Deltoid
- B.
Middle Traps
- C.
Upper Traps
- D.
Coracobrachialis and Subscapularis (assister)
- E.
Biceps Brachii (assist)
- 4.For shoulder abduction or flexion from 90-110 degrees, which joint components of the shoulder girdle combine to allow for this part of ROM?
- A.
GH and AC joints
- B.
AC and SC joints
- C.
GH and SC
- D.
AC, SC, and ST
- 5.Scapulohumeral Rhythm is:
- A.
Coordinated movement of the GH & SC joints where 5 degrees of GH motion follows 2 degrees of SC motion. GH motion occurs with the first 90 degrees of shoulder flex/ext. and abd/add.
- B.
Coordinated movement of the AC & SC joints where 2 degrees of AC motion follows 4 degrees of SC motion throughout ROM
- C.
Coordinated movement of the GH & SC & AC joints that generally occurs in a 2:1 ratio of GH motion to SC & AC joint motion. GH motion occurs at the beginning and end of the shoulder flex/ext & abd/add. Scapular movement occurs between 80 to 140 degrees of flex/abd.
- D.
Coordinated movement of the scapulothoracic motion and AC & SC joints that occurs in a 2:1 ratio. Scapulothoracic motion occurs within 40 to 120 degrees of shoulder flex/ext & abd/add.
- 6.All of the following muscles are involved in the motion of shoulder girdle depression, except:
- A.
Pectoralis Major
- B.
Lower Traps
- C.
Middle Deltoid
- D.
Serratus Anterior
- 7.Which componennt of the shoulder girdle is most likely to undergo degenerative changes over time?
- A.
SC joint
- B.
AC joint
- C.
ST joint
- D.
GH joint
- 8.Which of the following activities requires full shoulder external rotation?
- A.
Tying a tie
- B.
Brushing your teeth
- C.
Buttoning a polo shirt
- D.
Brushing/combing your hair on the back of your head
- 9."Winging" of the scapula occurs with weakness in one of these muslces
- A.
Levator Scapulae
- B.
Serratus Anterior
- C.
Rhomboids
- D.
Subscapularis
- 10.All of the following muscles are involved in the motion of shoulder (humeral) horizontal abduction except?
- A.
Serratus Anterior
- B.
Posterior Deltoid
- C.
Middle Traps
- 11.All of the following muscles are invloved in the motion of shoulder girdle elevaton, except?
- A.
Serratus Anterior
- B.
Upper & Middle Traps
- C.
Levator Scapulae
- D.
Rhomboid Major & MInor
- 12.All of the following muscles are invloved in the motion of shoulder (humeral) external rotation, except?
- A.
Infraspinatus & Teres Minor
- B.
Posterior Deltoid (assister)
- C.
Anterior Deltoid
- D.
Supraspinatus (assister)
- 13.Which one of the following activities would require the action of shoulder depression?
- A.
Reaching an object on top of the refrigerator
- B.
Pushing down on arm rests of a chair in order to stand up
- C.
Lifting a cup to take a drink
- D.
Putting a hat on top of your head
- 14.For shoulder abduction or flexion from 0-90 degrees, which joint components of the shoulder girdle combine to allow for this part of ROM?
- A.
GH and AC joints
- B.
AC and SC joints
- C.
GH and SC
- D.
AC, SC, and ST
- 15.What is the closed packed postion for the GH joint and what is the joint end feel for this position?
- A.
Closed packed position is maximal internal rotation and adduction; end feel is soft
- B.
Closed packed position is maximal shoulder extension; End feel is firm
- C.
Closed packed position is maximal shoulder abduction and external rotation; End feel is firm
- D.
Closed packed position is maximal horizontal adduction and internal rotation; end feel is soft
- 16.All of the following muscles account for dynamic stabilization of the GH joint when the arm is in a dependent position (hanging next to the trunk), except?
- A.
Rotator Cuff Muscles
- B.
Upper Trapezius
- C.
Pectoralis Major
- D.
Long Head of Biceps
- 17.All of the following muscles are involved in the motion of shoulder (humeral) adduction except:
- A.
Anterior Deltoid
- B.
Pectoralis Major
- C.
Latissimus Dorsi
- D.
Teres Major & Subscapularis
- 18.If the GH joint were immobilized by osteoarthritis (frozen shoulder) and only 20 degrees is available at the GH joint, what range of shoulder flexion and abduction would be available to the upper extermity?
- A.
Only 20 degrees of shoulder flexion and abduction would be available because no motion is available at AC & SC joints
- B.
20 degrees of GH motion, plus 30 degrees from SC joint (movement from AC joint unavailable) = approx. 50 degrees available for flex/abd
- C.
20 degrees of GH motion, plus 30 degrees from AC joint (movement from SC joint unavailable) = approx. 50 degrees available for flex/abd
- D.
20 degrees of GH motion, 120 degrees from ST motion = approx. 140 degrees available for shoulder flex/abd
- 19.A substitution or trick movement for scapular elevation can be which one of the following motions?
- A.
Shoulder protraction
- B.
Lateral trunk extension toward weak side
- C.
Trunk Flexion
- D.
Bringing head down to shoulder by tipping head to side
- 20.If the clavicle were unable to rotate on its axis because of injury at the SC joint, what functional movement issues would be seen at the shoulder girdle complex?
- A.
No movement issues would be seen at the shoulder girdle complex
- B.
Movement of the shoulder would be limited to 30 degrees of shoulder flex/abd
- C.
Only approximately 90 to 110 degrees of shoulder flex/abd would be possible
- D.
Movement of the shoulder would be limited to internal rotation
- 21.A substitution or trick movement for shoulder abduction to 90 degrees can be any of the following motions except:
- A.
Shoulder Shrug
- B.
Scapular Extension
- C.
Contralateral or Ispilateral trunk side flexion
- D.
Bringing head down to shoulder by tipping head to side
- 22.What happens if you excessively load the hanging (dependent) limb, especially is situations where muscle function has been impacted by stroke, or other brain injury?
- A.
Shoulder sublaxation would occur
- B.
Shoulder disclocation would occur
- C.
Frozen shoulder would occur
- D.
Shoulder bursitis
- 23.Which of the following activities requires full shoulder internal rotation?
- A.
Tying a tie
- B.
Brushing your teeth
- C.
Buttoning a polo shirt
- D.
Brushing/combing your hair on the back of your head
- 24.Which of the following activities requires full shoulder flexion/adduction?
- A.
Tying a tie
- B.
Brushing your teeth
- C.
Buttoning a polo shirt
- D.
Brushing/combing your hair on the back of your head
- 25.Which one of the following activities would require the action of shoulder elevation?
- A.
Reaching an object on top of the refrigerator
- B.
Pushing down on arm rests of a chair in order to stand up
- C.
Lifting a cup to take a drink
- D.
Putting a hat on top of your head
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