numbness and more pain hmmm sounds like some nerve damage or at least nerve involvement. Exercises seem to aggravate, in general exercises will aggravate (temporarily!) and for shure if scar tissue is a major item. I think you should get in touch with a physiotherapist to get assessed (and if you are a physio get a colleague have a look at it). The webside you show tells things from an orthoped's view, pain on the medial side of the knee can e.g. also be referred pain from the hip or back. Which by the way doesn't exclude knee problems. The problem is in general that there are many causes for pain in a certain area and the internet can be very enlightening but also very unfocussing.