This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Avascular Necrosis & Osteochondroses, Subject name: Orthopaedics
Freiberg's disease is 
Select and explain. 
A. Avascular necrosis of the navicular, B. Avascular necrosis of the lunate, C. Osteochondritis of the calcaneal apophysis, D. Osteochondritis of the second metatarsals
D: Osteochondritis of the second metatarsals
Answer: D: Osteochondritis of the second metatarsals 
Explanation: D. i.e. (Osteochondritis of the second metatarsals) (101-2 - Apley 8th)FRIEBERG'S DISEASE - is a crushing type of osteochondritis of the second metatarsal head (rarely the third) affects mostly young womenOSTEOCHONDRITIS (OSTEOCHONDROSIS)1. Crushing Osteochondritis* Freiberg's disease- metatarsals** Kohler's disease- navicular** Kienbock's disease- carpal lunate** Panner's disease- capitulum*2. Splitting osteochondritis (Osteochondritis disease)Common sites* Lateral surface of the medial femoral condyle in the knee*** Anteromedial comer of the talus in the ankle* Superomedial part of the femoral head* Humeral capitulum and first metatarsal head3. Pulling osteochondritis (Traction Apophysitis)* Osgood - Schlatter's disease - Tibial tuberosity* *** Sever's disease - Calcaneal apophysis