I need to know what is the way to determine that my distal femural osteotomy has become a NON-UNION. Tomography??? I am at 61/2 months post op Much new callus formation in last 3 mos. but I still need to use cane for any distance...My surgeon wants to go in again and tighten screws, recompress plate, file away callus and stick in more bone matter (from my hip) This is the LAST thing I want to do since it has taken so long to heal already. BTW He claims that the stainless steel plate can crack & cause infection if I keep stressing it. Is this likely???? so far all screws and plate are holding perfectly w no movement... Please help--I live out in Oregon and want to walk again with no pain. Should I keep waiting for this to ossify??? Or undergo an iffy surgery AGAIN???