MSK

Question 1

tx for developmental dysplasia of the hip

Answer 1

depends on age of diagnosis:

• < 6 months old: Pavlik harness (abduction bracing)
• 6-15 months old: hip spica cast
• 15-24 months old: open reduction followed by hip spica cast

Make sure to monitor for osteonecrosis until age 6

Question 2

What is the MC soft tissue sarcoma in childhood

Answer 2

Rhabdomyosarcoma

Question 3

What is the location on the long bone that an osteosarcoma vs Ewing Sarcoma is

Answer 3

Osteosarcoma- metaphysisis (MO)

Ewing Sarcoma- Diaphysis (ED)

Question 4

which MSK cancer:

x-ray: sun ray/burst, hair on end appearance

Answer 4

osteosarcoma

Question 5

nighttime bone pain, fever

Answer 5

Ewing Sarcoma

Question 6

MSK neoplasm:

x-ray: lytic lesion, onion skin appearance

Answer 6

Ewing Sarcoma

(“Eww onions are gross”)

Question 7

X-ray: pedunculated lesion on surface of bone

Answer 7

osteochondroma (benign)

Question 8

How should you eval an infant w/ risk factors for developmental dysplasia of the hip other than female sex

Answer 8

routine screening by manipulation at each health visit and an ultrasound of their hips at 4-6 weeks of age