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What is March fracture and explain in detail?
March fracture, is the fracture of the distal third of one of the metatarsals occurring because of recurrent stress.  It is more common in soldiers, but also occurs in hikers, organists, and people whose duties entail much standing (such as hospital doctors).  March fractures most commonly occur in the second and third metatarsal bones of the foot. It is a common cause of foot pain, especially when people suddenly increase their activities.

Signs and symptoms
The onset is not dramatic.  When the boot or shoes are taken off, there is a cramp-like pain in the affected forefoot, and moderate local edema appears on the dorsal aspect.  On moving each toe in turn, that of the involved metatarsal causes pain, and when the bone is palpated from the dorsal surface, a point of tenderness is found directly over the lesion. Radiography at this stage is negative, but the condition is diagnosed correctly by military surgeons without the aid of x-rays