sc, ac, shoulder, elbow and radioulnar

Question 1

what kind of joint is the SC joint

Answer 1

synovial modified saddle

Question 2

what ligaments make up the SC joint

3 of them

Answer 2

• ant and post sternoclavicular
• costoclavicular
• interclavicular

Question 3

what movements occur at SC joint

Answer 3

passively moves w/ scap

-does opp of what scap does

Question 4

innervation and blood supply to the SC joint

Answer 4

nerve: subclavius but mostly suprascap
blood: suprascap and internal thoracic

Question 5

what kidn of joint is the AC joint

Answer 5

synovial planar joint

Question 6

what ligaments make up the AC joint

Answer 6

• acromioclavicular

- coracoclavicular (conoid and trapezoid)

Question 7

what movements occur at the AC joint

Answer 7

• not much

- keep humerus suspended and support weight

Question 8

nerve and blood supply to the AC joint

Answer 8

nerve: suprascap and lateral pectoral
blood: suprascapular and thoracoacromial

Question 9

what is shoulder seperation?

what happens as a result?

Answer 9

• tearing of coracoclavicular or acromioclavicular ligs

- clavicle will override acromion

Question 10

what type of joint is the gleohumeral joint

Answer 10

synovial ball and socket

Question 11

what ligament attaches the coracoid process and acromion process?
what motion does it resist?

Answer 11

• coracoacromial

- prevent upward displacement/reiforce superior aspect of joint

Question 12

what ligaments attaches croacoid process and humerus?

what motiion does it resist?

Answer 12

• coracohumeral

- excessive abduction/reinforce supeior aspect of shoulder

Question 13

what ligaments holds the bicep tendon in place?

Answer 13

transverse humeral

Question 14

what is the function of the glenohumeral ligament

Answer 14

strengthen anterior portion of capsule

Question 15

what happens if the inferior aspect of the glenohumeral ligament is weak?

Answer 15

anterior glenohumeral instability

-key in stabilization

Question 16

nerve and blood supply to the glenohumeral joint

Answer 16

nerve:
-suprascapular
-axillary
-lateral pectoral
-posterior cord of brachial plexus
blood:
-ant/post humeral circumflex
-suprascapular

Question 17

where and what are the functions of the openings in the shoulder capsule
3 of them

Answer 17

• btwn tubercels: allows long head of biceps to pass thru
• below coracoid process: communicate w/ subscarp bursa
• btwn joint and infraspinatus

Question 18

where are the bursa in the shoulder joint

4 of them

Answer 18

• subscapular: btwn muscle and neck of scap
• subacromial/subdeltoid: superficial to supraspinatus
• btwn coracoid and capsule
• upper surface of acromion

Question 19

what is the role of traps in stability of shouldre joint

Answer 19

• passive stability

- keep joint retracted in upward rotation

Question 20

what is the role of the deltoid in shoulder stability

Answer 20

• passive

- prevent dislocation by gravity

Question 21

what is the role of the ligaments in shoulder stability

Answer 21

• passive

- help stabilize

Question 22

what is the role of the rotator cuff muscles in shoulder stability

Answer 22

• active

- weakness can cause impingement of structures

Question 23

what ligaments are involved in the elbow joint?

2 of them

Answer 23

• radial/lateral collateral

- ulnar/medial collateral (ant, post, oblique)

Question 24

nerve and blood supply to elbow

Answer 24

nerve:
-musculocutaneous
-radial
-some ulnar, median, and ant inerosseous
blood:
-anastomosis of brachial to raidial and ulnar arteries
-collateral meet w/ recurrent arteries (radial and ulnar)

Question 25

what bursa are located in elbow joint?

4 of them

Answer 25

• olecranon (subcutaneous and under tricep tendon)
• radioulnar
• interosseal
• bicepitoradial

Question 26

what ligaments are invovled in proximal radioulnar joint

Answer 26

annular

Question 27

nerve and blood supply at the proximal radioulnar joint

Answer 27

nerve:

• musculocutaneous
• median
• radial
  blood: same as elbow

Question 28

what is nursemaids elobw?

what does a partial and complete one look like?

Answer 28

• radius pulled out of annular lig
• partial: no rotation of arm
• complete: lump on arm

Question 29

what happens for tommy john surgery?

Answer 29

• damage to ulnar collateral lig

- palmaris longus tendon “sewen” into joint

Question 30

what is the main symptom of shoulder impingement

Answer 30

pain posterior and below acromion especially during abd/add and flexion

Question 31

what tests can you perform for shoulder impingment

Answer 31

• painful arc: pain will be present from 60-120

- full can test vs empty can: pain during empty can = positive test