<prompt> Which is true about shoulder dislocation?Anterior dislocation is common than posteriorFixed medial rotation in posterior dislocationKochers manoeuvre is effective in anterior dislocationAll of the above  <response>: D i.e. All of the above - Anterior dislocation of humerus produces an impaction fracture defect in the posterolateral aspect of humeral head k a Hill-Sachs lesion whereas, recurrent posterior dislocation of humerus produces an impaction fracture defect in the anteromedial humeral head ka reverse Hill Sachs lesion or Trough sign.- Most of the traumatic dislocations heal and would never recurrQ. 