Running after menisectomy

I have no experience with your condition.

Personally, if I were in your situation, I would not take up running.  Maybe an elliptical machine, but only maybe.  Whatever you do, if anything, ease your way into it.  Running is not good for the knees, despite what some people might tell you to the contrary.  If you can walk and hike with causing further knee problems, I'd stick with walking and hiking.

Supposedly the aquabike (swim-bike) events are growing in popularity.  If you want to do something competitive, keep an eye out for those.

You don't necessarily have to give up running.

Background, I've had 3 meniscectomies (2 left, 1 right, both partial medial and lateral).  I'm also a physical therapist, and when I was going through school, my own professors said don't run.  At that time, I had 2 past knee scopes.  Ran anyway, ended up with a 3rd torn meniscus.

Fast forward to 2005, I finally get a clue and start working with an ortho specialist in our field, which opened a whole can of worms.  My arch was collapsing on my left foot, I've got the tightest hip flexors you've ever seen (I had no hip extension), I couldn't fire my right glut, etc.

I've gotten serious with stretching, orthotics in my running shoes,  dynamic functional  exercise in multiple planes for stabilization.  I've now been running for 2 years and have had no knee pain.  And I NEVER could run without symptoms.

Every person is different, but don't think that you have let your body decide for you.  Just look at the great stories at Kona (bilateral below knee amputee?  awesome).  Find a qualified physical therapist to look at your structure and functional movement, and go from there. 

FYI look for therapists that have OCS (orthopaedic certified specialist) and FAAOMPT after their name (Fellow of the American Academy of Orthopaedic Manual Physical Therapists, or international equivalent...long I know).  These are the cream of the crop.  And one more thing, when calling the PT office, ask if utilize Gary Gray.  He's one of the foremost authorities on functional exercise.  Hope this helps.