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
[{'content': 'Flexion, adduction & internal rotation is characteristic posture in: September 2012 \nSelect and explain. \nA. Anterior dislocation of hip joint, B. Posterior dislocation of hip joint, C. Fracture femoral head, D. Fracture shaft femur', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Ans. B i.e. Posterior dislocation of hip joint Hip dislocation MC type: Posterior dislocation Attitude of limb in posterior dislocation: - Flexion, - Adduction, - Internal rotation Dislocation, which can be felt of per rectal examination: Central fracture dislocation', 'role': 'assistant'}]