Post Traumatic

Question 1

Myositis ossificans

Answer 1

Circumferential calcification with Lucent centre

Periosteal reaction also can be seen

Question 2

Avulsion injury

Answer 2

Especially in the ischial tuberosity and ant inf il spine
Delayed film can be helpful

Question 3

Cortical Desmoid

Answer 3

Posteromedial femoral condyle with adjacent periosteal reaction

Is an avulsion injury

Young people - may or may not be ass with pain or increased uptake in bone scan or periosteal reaction

Can simulate a parosteal osteosarcoma

Question 4

Geodes

Answer 4

Traumatic or degenerative

In degenerative additional findings like joint space narrow, sclerosis, osteophytes

Can occur in cppd or pseudogout, rheumatoid and avn

Question 5

Sacral and supraacetabulat insufficiency fracture

Answer 5

Simulate mets

Question 6

Costochondritis

Answer 6

Anterior end calcification

Question 7

Pseudodislocation of shoulder

Answer 7

Due to hemarthrosis

Scaular view