I underwent ACL reconstruction with a 60% debrided meniscus in January. My PT knows all the details, but my knee still has this instablity to it, doing everyday things like walking and road rides. It's a combination of lateral movement along with sort of a separating feeling when i lift my foot up (feels like the knee is pulling apart). any advice on excercises to tighten it up better, or a method of icing/resting it to keep it together?