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': 'An oblique # of the olecranon. If displaced proximally. The treatment is : \nSelect and explain. \nA. Excision & resuturing, B. Tension band wiring, C. Elbow is immobilized by cast, D. Open reduction & external fixation', 'role': 'user'}, {'content': 'Answer: B \nExplanation: "Oblique fracture may need a lag screw, neutralization by tension band system or plate". - Apley\'s.\nTreatment of olecranon fracture :\n\nTreatment of olecranon fracture may be either conservative or surgical.\n\nConservative treatment :\n\nConserative treatment includes immobilization in above elbow slab. Indications are :\n\n\nUndisplaced fractures.\n\u200bDisplaced fracture with displacement less than 2 nun.\n\nSurgical treatmentn :\n\nIt is indicated in displaced fracture (> 2mm) and in avulsion fractures due to triceps pull.\n\n\nMethods of fixation are :\n\nOpen reduction and internal fixation by figure of 8 tension band wiring (TB W) : It is the most commonly used method for olecranon fracture. This method is used for avulsion fractures : transverse fractures when the fracture is proximal to coronoid :\xa0and sometimes oblique fractures.\nLag screw fixation (interfragmentary screw) : Used in comminuted fracture when the distal fragment is displaced anteriorly and in the oblique fracture.\nPlate and screw fixation with grafting : Displaced comminuted fracture where tension band wiring is not possible.\nExcision of the proximal fragments.', 'role': 'assistant'}]