This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Anatomy
Frieberg's disease involve - 
Select and explain. 
A. Tibial tuberosity, B. Calcaneal tuberosity, C. 2nd metatarsal, D. 5th metarasal
C: 2nd metatarsal
Answer: C: 2nd metatarsal 
Explanation: *Frieberg's disease is osteochondritis of 2nd metatarsal head. Ref: Appley's 9th/e p.723