I had ttt surgery for knee that is arthritic , has the Q angle and subluxated a lot. It worked, cut the subluxations down a LOT for maybe 4/5 years. Unfortunately knee arthritis has continued to develop and I am now having mild subluxations but they aren't as painful as before- other elements of knee are worse now but thats not down to the TTT - its down to fact I have badly arthritic knee with torn meniscus.
It was the right surgery at the time for me.