Yeah, they are good... it has been well over 15 years now and I am doing fine... can't even tell. Was back riding hard in under six months. Insist on a sports medicine Therapist post surgery... otherwise the lame exercises they would have you do are no where near what a decent cyclist can handle. (exercise bikes at about 60rpm... I would spin up to 90+ when they weren't looking... they finally understood and got more agressive.)

First week was rough, it hurt... the next couple of weeks get better and better. It really is up to you to push the Physical Therapy though.

Good luck, hang in there.