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 is true about the dislocation of hip joint? \nSelect and explain. \nA. Posterior dislocation is commoner, B. In posterior dislocation whole lower limb is rotated medially, C. In anterior dislocation whole lower limb is rotated laterally, D. All of the above', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Posterior dislocation is the commonest dislocation.\nPosterior dislocation has typical deformity of flexion, adduction and internal (medial) rotation.\nAnterior dislocation has deformity of flexion, abduction and external (lateral) rotation.', 'role': 'assistant'}]