This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Important complications in orthopaedics, Subject name: Orthopaedics
[{'content': 'Non-union is common in fracture of \nSelect and explain. \nA. Scapula, B. Talus, C. Neck of femur, D. Tibial fracture', 'role': 'user'}, {'content': 'Answer: C \nExplanation: The following are some of the clinical findings which suggest delayed union and non union : Persistent pain Pain on stressing the fracture Mobility (in non-union) Increasing deformity at the fracture site (in non-union). Ref essential ohopaedic maheshwari and mhaskar 9TH ED p 48', 'role': 'assistant'}]