I had femur surgery on 13th july due to road accident, I can walk now without any support with limping, after 2 months xray doctor said it's good improvement but after 3rd & 4 months xray doctor is little worried they said this is delayed union , according to their experience callus is not forming as they have to be formed after 4 months in femur fracture patient. They suggest to bone marrow. But they also said every body is not same sometimes fracture healing starts in 4th or 5th month and we called that delayed union I really do not understand what to do ? Should I wait for an extra month or should go to bone marrow I am attaching the xray for consecutive month From left to right ( left means old and right means latest ) Thanks to all doctors for their valuable time in advance