Which procedures can correct an inverted v deformity?

I need to ssee photos to determine if u have an inverted v deformity. For 35 years I have prevented this by using a precise size of the concavity and using an onlay graft of proper size before it occurs. This is probably what u need. 

Photos would really be helpful.  The problem may not be spreader grafts but could be inadequate nasal bone infracture, which is one of the most common reasons patients may require nasal revision and often will take care of the problem. I not a big fan of spreader grafts and have never found them to be needed; your problem couid be addressed by simply fracturing the bones more adequately