<prompt> An oblique of the olecranon. If displaced proximally. The treatment is :Excision resuturingTension band wiringElbow is immobilized by castOpen reduction external fixation  <response>: Oblique fracture may need a lag screw, neutralization by tension band system or plate. - Apleys.Treatment of olecranon fracture :Treatment of olecranon fracture may be either conservative or surgical.Conservative treatment :Conserative treatment includes immobilization in above elbow slab. Indications are :Undisplaced fractures.Displaced fracture with displacement less than 2 nun.Surgical treatmentn :It is indicated in displaced fracture 2mm and in avulsion fractures due to triceps pull.Methods of fixation are :Open 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 : and sometimes oblique fractures.Lag screw fixation interfragmentary screw : Used in comminuted fracture when the distal fragment is displaced anteriorly and in the oblique fracture.Plate and screw fixation with grafting : Displaced comminuted fracture where tension band wiring is not possible.Excision of the proximal fragments. 