(1,3) Child Abuse & Myositis Ossificans

Question 1

What are the radiographic findings of child abuse?

Answer 1

- multiple Fx’s in various stages of healing
- multiple metaphyseal corner Fx’s
- rib Fx’s (infants)
- skull Fx’s
- multiple closely approximated Fx’s
- epiphyseal displacement
- exuberant periosteal new bone

Question 2

What is another name for myositis ossificans?

Answer 2

heterotrophic bone formation

Question 3

What causes myositis ossificans?

Answer 3

direct injury to muscle (or any ST) leading to bruising or hemorrhage

Question 4

What is the differential diagnosis for myositis ossificans?

Answer 4

osteosarcoma

Question 5

How is myositis ossificans differentiated from an osteosarcoma?

Answer 5

Zonal phenomenon
(myositis ossificans calcifies from outside in)

Question 6

What is the term for myositis ossificans in the medial collateral ligament of the knee?

Answer 6

pellegrini-stieda’s Dz

Question 7

What is the term for myositis ossificans in the adductor magnus muscle?

Answer 7

prussian’s Dz
(requires at least 2 views to determine which m)

Question 8

What is the term for myositis ossificans in the intertransverse muscles?

Answer 8

lumbar ossified bridge syndrome (LOBS)