i've not heard of that before. interesting. its great to see that you are getting somewhere with regard getting a solution to your problem.
any surgery that involves your knee cartilage will more than likely speed up the development of osteoarthritis in the knee. to what extent? hard to say. everyones different. after both of my knee surgeries where i had my acl replaced, medial cartilage repaired and lateral cartilage shaved, i've come to accept that i'l have degenerative changes come on me earlier than they would have otherwise. its about weighing up the pro's and cons. for me, i had to have the surgery to be able to function properly without pain and swelling and return to some form of sport. surgical approaches to cartilage are evolving all the time so hopefully when i don have problems down the road it'l be a nice easy job to sort it all out.