<prompt> All of the following are types of avascular nonunion of fracture except NOT RELATED-OHOTorsion wedge nonunionOligotrophic nonunionComminuted nonunionDefect nonunion  <response>: Definition FDA panel of nonunion: It is said to be established when a minimum of 9 months has elapsed since injury and fracture shows no radiologically visible progress suggestive of healing continuously for 3 months. 