Hi, I had one done in 2017, I had unbeknown to me, bandy legs and damage from rugby and running. I think there are various types of surgery, I had a wedge opened up on my inner right tibia just below the knee and a titanium plate secured using 3” ti screws. This stayed in place for 2 years, it could have stayed in permanently but I had it removed.
I have some X-ray photos that look like there’s a puppet show going on inside my knee.
I hobbled out on crutches and did a lot of knee icing, they gave me a iced water gadget.
I didn’t have that ring with bolts going into my leg. my knees are ok now, so I guess it was a success, right hip is shot now. I’m 60.
if you get it done, do the physio to retain full movement and strengthen the quads before hand as much as possible.
dm me if I can answer any questions or you want to see X-ray photos.
good luck