SLOB

Growth under the cover of that new bone must follow the down & outward contour. Thus the native hip can and does deepen. The ridge in the bone-graft caused by the rectus femoris reflected head (shown in yellow) allows a very accurate marker for assessing original hip from augmented hip. Sometimes, portions of the bone graft mass seem to not have made bone, but ultrasound, MRI, probe, and outlining air injection as well as biopsy has taught us that this is actually very tough uncalcified bone. It works either way calcified or not. We call it shark bone as that is what our radiologists called it.