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': 'All of the following can be the complications of a malunited Colles fracture except : \nSelect and explain. \nA. Rupture of flexor pollicis longus tendon, B. Reflex sympathetic dystrophy (RSD), C. Carpal tunnel syndrome, D. Carpal instability', 'role': 'user'}, {'content': "Answer: A \nExplanation: Complications of Colle's fracture :\n\nComplications in college's fracture are high (50 - 60%). Following complications may occur\n\n1) The stiffness of fingers and joints :\n\nThe stiffness of finger, wrist and shoulder is the most common avoidable complication of Colle's fracture.\n\n2) Malunion :\n\nIt is the second most common complication.\nIt results in dinner fork deformity.\n\n\nSudek's osteodystrophy (reflex sympathetic dystrophy).\nCarpal tunnel syndrome.\nCarpal instability.\nRupture of the extensor pollicis longus tendon.\nFrozen shoulder syndrome.\nTFCC injury.\nNon - union is very rare.", 'role': 'assistant'}]