Humerus Fractures

Question 1

Which direction is displacement in distal humerus physeal separation?

Answer 1

Posteromedial

Question 2

What are common complications of distal humerus physeal separation?

Answer 2

1) medial condyle AVN

2) cubitus varus

Question 3

Which patient population do distal humerus physeal separations generally occur?

Answer 3

Children under 3; >50% a/w battered child syndrome

Question 4

What percentage of growth comes from the proximal portion of the humerus?

Answer 4

80%
Highest ration of any long bone 80:20
Femur is second; 70:30

Question 5

What is little leaguers shoulder?

Answer 5

SH-I fracture of the proximal humeral physis d/t overuse; XR shows widening of physis

Question 6

What are operative indications for pediatric proximal humerus fractures?

Answer 6

1) open
2) >50% displacement or 45 degrees angulation in adolescents
3) vascular injury
4) associated intraarticular injury