Chapter 7 Shoulder Flashcards Preview

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Flashcards in Chapter 7 Shoulder Deck (48):
1

Bones making up the shoulder?

Clavicle, scapula, humerus

1

Joints of the shoulder/

Scapulothoracic (pseudo-joint), AC joint, glenohumeral, SC joint

2

Rotator cuff muscles?

Supraspinatus, Infraspinatus, teres minor, Subscapularis (SItS)

2

Primary flexor?

Deltoid (anterior portion)

3

Primary abductor?

Deltoid (middle portion)

3

Primary extensors?

Lat dorsi, teres major, deltoid (posterior portion)

4

Primary adductors?

Pec major, lat dorsi

4

Primary external rotators?

Infraspinatus, teres minor

5

Primary internal rotator?

Subscapularis

5

Subclavian artery passes bt which 2 muscles?

Anterior and middle scalenes--contracture of these muscles affects arterial supply but not venous drainage

6

Subclavian vein passes where?

Anterior to anterior scalene

6

When does subclavian a become axillary a?

Lateral border of 1st rib

7

When does the axillary a become the brachial a?

Inferior border of teres minor

7

1st major branch of brachial a?

Profunda brachial a--accompanies radial n in its posterior course of radial groove

8

Where does brachial a divide into ulnar and radial aa?

Under bicipital aponeurosis

8

What becomes the deep palmar arterial arch?

Radial a

9

What becomes the superficial palmar arterial arch?

Ulnar a (Ulnar is Up in the palm)

9

Tx technique to relieve lymph congestion of UE?

1) Open thoracic inlet
2) Redome diaphragm
3) Posterior axillary fold technique

10

Nerve roots of brachial plexus?

C5-T1

10

Degrees of motion during arm abduction?

120 degrees due to glenohumeral motion, 60 degree due to scapulothoracic motion

11

For every 3 degrees of abduction...

Glenohumeral joint moves 2 degrees and the scapulothoracic joint moves 1 degree

11

Most common somatic dysfunction of shoulder?

Restriction in internal and external rotation

12

Second most common somatic dysfunction of shoulder?

Restriction in abduction

12

Least common somatic dysfunction of shoulder?

Restriction in extension

13

Motion of clavicle during internal/external rotation?

Around transverse axis

13

Most common somatic dysfunction of SC joint?

Clavicle anterior and superior on sternum

14

Most common somatic dysfunction of AC joint?

Clavicle superior and lateral on acromion

14

"Step-off" seen at the AC joint?

Superior and lateral clavicle on acromion

15

Sites of compression of nv bundle in thoracic outlet syndrome?

1) Bt anterior and middle scalenes
2) Bt clavicle and 1st rib
3) Bt pectoralis minor and upper ribs

15

Pathogenesis of supraspinatus tendinitis?

Continuous impingement of greater tuberosity against acromion as arm is flexed and internally rotated

16

Site of pain in supraspinatus tendinitis?

Tip of acromion

16

"Painful arc"?

Pain exacerbated by abduction from 60-120 degrees in supraspinatus tendinitis

17

Pathogenesis of bicipital tenosynovitis?

Inflammation of tendon and its sheath of long head of biceps

17

Aggravating factors in bicipital tenosynovitis?

Elbow flexion or supination

18

Most commonly affected rotator cuff muscle?

Supraspinatus

18

Location of pain in rotator cuff tear?

Tenderness just below tip of acromion

19

Motions most often affected in adhesive capsulitis?

Abduction, internal and external rotation (extension is preserved)

19

Etiology of frozen shoulder?

Prolonged immobility of shoulder

20

When is pain elicited in frozen shoulder?

End of ROM

20

Most common shoulder dislocation?

Anterior and inferior--affects axillary n

21

Pathogenesis of winging of scapula?

Weakness of anterior serratus due to long thoracic n injury

21

Most common brachial plexus injury?

Erb-Duchenne's palsy

22

Erb-Duchenne's?

Upper trunk (C5-6)

22

What is paralyzed in Erb-Duchenne's?

Abduction, external rotation, flexion, supination

23

Most commonly affected nerve injured in UE due to direct trauma?

Radial n

23

Crutch palsy?

Radial n

24

Most common cause of injury to radial n?

Humeral fracture

24

Saturday night palsy?

Compression of radial n against humerus as arm is draped over back of chair