<prompt> Commonest site of march is:Involves shaft of 2 3 rd metatarsalsAvulsion of 5th metatarsalsCalcaneus involvedOlecranon involved  <response>: A i.e. Involves shaft of 2 3 rd metatarsals March fracture is a stress fatigue fracture of second metarsalQ Avulsion fracture of base of fifth metatarsal is known as pot hole injury or Robe Jones fracture 