Until I was 50, I pounded the pavement 4 or 5 days a week and visioned myself in the future running 10 ks at 75 or so. Then, kicking against a heavy bag in martial arts, I tore my medial meniscus (knee cartillage). As best as I know, the orthopod carved out about 1/3 to 1/2 trimming back the tear. I heeded the advice to stop the road running though I kept at aggressive tennis several times per month, replacing running with the bike and hiking. The knee feels no different than the unoperated one. But I encounter people who keep running after the surgery. Though I know there are some studies indicating a higher likelihood of arthritis after such surgery, I have heard a doc or two say that they are not sure that running truly accelerates the arthritis. I fantasize about getting back to running (maybe softer trails rather than roads). Does anyone here have experience with continuing to run after a menisectomy?