Scheduled for Patellofemoral arthroplasty

Hi All,

I am scheduled for Patellofemoral arthroplasty in a few weeks. I'm looking through the paper work and have been doing some research on the web and it appears this is not a common surgery. In fact, all my paper work (standard forms) refer to a TKR. My surgeon indicated that this procedure is not common and that he has only done maybe 7 in the past five years. Although he did indicate that he probably had done the most of all his peers. Does anyone now whether 7 of these procedures in 5 years is a lot or acceptable. If the procedure is that uncommon maybe that is good or the best I can hope for. Needless to say I'm a little worried that my surgeon may not have enough experience.

Thanks,
Mark