I'm almost back to where I was before rupturing the tendon, as far as leg strength and mobility are concerned. My knee isn't quite at full strength (especially when nearly fully extended), so walking on uneven terrain can still be an adventure. On the other hand, with the help of a pair of trekking poles I successfully hiked the two-mile main trail through the town forest this afternoon. (Typical Massachusetts forest trail: granite ledges, exposed tree roots, and random rocks left over from the last glaciation. Not great footing, in other words.)
Also, the last year of walking as much as possible has had a pleasant side effect. When I first went to see my doctor about the knee (back when I thought it was only sprained), I weighed just shy of 275 pounds. Yesterday, at my regular physical, I was down to 255.
Originally posted at http://edschweppe.dreamwidth.org/200894.html - comment wherever you please.