This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Upper Limb Traumatology, Subject name: Orthopaedics
In myositis ossificans mature bone is seen: 
Select and explain. 
A. At periphery, B. In center, C. Whole muscle mass, D. In the joint capsule
A: At periphery
Answer: A: At periphery 
Explanation: In myositis ossificans, there is peripheral ossification and central lucency of the mass Osteosarcoma- growth in to out Myositis ossificans- growth out to in I.O.C is CT SCAN The mass is usually separated from underlying bone by at least a thin line