Orthopaedics General a28512c2 Commonest site of march # is - A Involves shaft of 2 & 3rd metatarsals B Avulsion # of 5th metatarsals C Calcaneus involved D Olecranon involved High-Yield Explanation March fracture is fatigue (stress) fracture of metatarsals. The fracture usually affects the shaft or neck of the second and third metatarsal bone.