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: Surgery
Avascular necrosis of which of the following bone result in Kohler's Disease? 
Select and explain. 
A. Lunate bone, B. Femoral neck, C. Navicular Bone, D. Medial cuneiform bone
C: Navicular Bone
Answer: C: Navicular Bone 
Explanation: Osteochondritis of Navicular bone is known as Kohler's Disease. It results in avascular necrosis of Navicular bone.