i guess this only really applies if you had surgery due to a constant problem, rather than an injury. anyway i got my knee scoped back in november -- they removed some broken cartilage and did a lateral renticular release (for chondromalacia i believe). anyway, from the time it healed (around 2-3 months) until now (6 months post-op), it's been great. the occasional scar soreness and aches with weather changes. nothing i consider too major. but now it has started popping and catching, as well as giving way, and hurting during long drives and stuff like it used to. now it can't be chondromalacia because they already released the knee cap. i do plan to contact my ortho if it continues, but i am curious as to if this is normal. has anyone else had a similar experience?