This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Osteochondroses, Subject name: Orthopaedics
Kienbock's disease is osteochondritis of which bone? 
Select and explain. 
A. Lower pole of patella, B. Lunate, C. Capitellum, D. Navicular
B: Lunate
Answer: B: Lunate 
Explanation: Ans. is 'b' i.e., Lunate OsteochondritisNameBoneKienbocks diseaseLunatePerthes diseaseFemoral headPanners diseaseCapitullumPreiser's diseaseScaphoidJohansson Larson's diseaseOsteochondritis of lower pole of patellaFreiberg's DiseaseOsteochondritis of 5th metatarsal headCalves's diseaseCentral bony nucleus of vertebral bodyScheurman's diseaseRing apophysis of vertebraKohlers diseaseNavicularSever's diseaseCalcaneal tuberosityOsgood schattler diseaseTibial tubercle