Lecture 2: Upper limb bones and joints

Question 1

Bones in the upper extremity

Answer 1

30 bones

Question 2

Lesser tubercle

Answer 2

Anterior side

Question 3

Greater tubericle

Answer 3

Extends laterally

Question 4

3 of the 4 muscles of the rotator cuff

Answer 4

Attach to the greater tubercle

Question 5

Surgical neck

Answer 5

fracture just below the head needs a pin or wire to be inserted
Fracture here compromises the deltoid. SITS muscles will cause the limb to drop

Question 6

Movement of the arm

Answer 6

Foward -> deltoid and pect

Backward -> deltoid and lats

Question 7

Epicondyles

Answer 7

5 muscles attach to both lateral to medial

Question 8

landing on hands with elbow extended

Answer 8

force goes to -> carpal bones -> radius -> interossetus membbrane -> ulna -> humerus -> shoulder -> scapula -> Clavicle = SNAP

Question 9

Fall on hands with elbow bent

Answer 9

Force -> hands -> carpal bones -> radius = SNAP

2 inches beyond the wrist, sometimes the ulna at the same location = colle’s fracture

Question 10

Little leaguer elbow

Answer 10

16 yr or less, injured the grwoth plate of epipcondyle medial collateral ligmanet, stretching or tearing it

Question 11

Pitcher’s elbow

Answer 11

older than 16,
Tear or stretch the medial collateral ligament
You get tommy John surgery (Pitcher)
Tissue from palm is put in the elbow

Question 12

Wrist and distal radius fractures

Answer 12

most common fractures in indv 50 yrs of age or older