I had both knees replaced in November of '07 when I was 52. (I joke that I had a "bogo" deal.) Not a problem riding the bike---I commute to school, and since I live near Cleveland's Metroparks, I ride quite a bit there during the seasons. Rehab was a reall bit@#, though---I worked and worked on those knees---my final rehab was in the last week of March of '08---I was umpiring a HS baseball game three days later.

I have Stryker Triathlons now...and, while I cannot ref college hoops or football anymore, at least I am enjoying my time back in the saddle.

This summer I hope to ride from Pittsburg to DC.

Tim C.