<prompt> Pseudoarthrosis is seen in all of the following except-IdiopathicFractureOsteomyelitisNeurofibromatosis  <response>: Congenital PseudarthrosisPseudarthrosis, as the name suggests, is false joint, i.e. there is abnormal mobility between the two fragments of a bone.Pseudarthrosis may be :Acquired :- When a fractured bone fails to unite, i.e. in nonunion has been explained in earlier chapters.Congenital :- There is dysplasia of bone and soft tissue of a limb with failure of normal bone formation. Congenital Pseudarthrosis may be :-Idiopathic Neurofibromatosis type I most common cause Fibrous dysplasia Amniotic constriction bandOsteogenesis imperfectaCleidocranial dysplasiaAS infused bumboo spine 