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: Orthopaedics
Which of the following movements is restricted in Perthe’s disease? 
Select and explain. 
A. Adduction & external rotation, B. Abduction & external rotation, C. Adduction & internal rotation, D. Abduction & internal rotation
D: Abduction & internal rotation
Answer: D: Abduction & internal rotation 
Explanation: There is limitation of abduction & internal rotation due spasm of muscles. 
Other signs : 

antalgic gait * muscle spasm detected by roll test 
* proximal thigh atrophy 
* short stature Symptoms: painless limp, mild pain in the hip or anterior thigh or knee ,onset of pain may be acute or insidious