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
[{'content': 'Which of the following movements is restricted in Perthe’s disease? \nSelect and explain. \nA. Adduction & external rotation, B. Abduction & external rotation, C. Adduction & internal rotation, D. Abduction & internal rotation', 'role': 'user'}, {'content': 'Answer: D \nExplanation: There is limitation of abduction & internal rotation due spasm of muscles. \nOther signs : \n\nantalgic gait * muscle spasm detected by roll test \n* proximal thigh atrophy \n* short stature Symptoms: painless limp, mild pain in the hip or anterior thigh or knee ,onset of pain may be acute or insidious', 'role': 'assistant'}]