This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Pelvis and Hip injuries, Subject name: Orthopaedics
[{'content': 'Most common complication of interochantric fracture femur is- \nSelect and explain. \nA. Malunion, B. Nonunion, C. Osteoahritis, D. Nerve injury', 'role': 'user'}, {'content': "Answer: A \nExplanation: *Malunion is the most common complication of IT fracture. Complications * Malunion: Coxa varus: Caused by uncorrected abduction deformity, nail entry point that is too lateral, and migration of hardware proximally in the femoral head and neck Shoening: Due to uncorrected shoening intraoperatively and premature dynamization. Rotational deformity: Do to uncorrected external rotation of proximal fragment. This can be assessed intraoperatively with visualization of the lesser trochanter Ref: Adam's outline of fracture 12th/e p.237", 'role': 'assistant'}]