<prompt> Post traumatic avascular necrosis is seen all of the following fractures except?Waist of scaphoidNeck of femurNeck of talusSurgical neck of humerus  <response>: Avascular necrosis is commonly seen in Fracture femoral neck, fracture neck of talus, fracture waist of scaphoid and lunate, fracture neck of talus. Ref: Maheshwari, 3rd Edition, Pages 40-41 