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
Which of the following is/are X ray feature/s of pehes disease? 
Select and explain. 
A. Increased medial joint space, B. Metaphyseal cysts and rarefaction, C. Lateral extrusion of femur head, D. All the above
D: All the above
Answer: D: All the above 
Explanation: Answer- D. All the aboveRadiological findings in pehe's disease are :-Increased meilial joint spaceWidening offemoral neckLateral extrusion (lateral subluxation)Metaphyseal cysts and rarefaction of metaphysisHorizontal physis with speckled calcification lateral to itFragmentation of femoral head with increased density (irregular densities in the epiphysis)