I had meniscus surgery on both knees...right one was 18 months ago and left last May. Only used the crutch the first couple of days. Could straighten the knees after a few days. Right knee if fabulous ...left swells on the inside if I kneel to garden or such for longer than I should. Walk lots and now trying to strengthen by riding my bike. Take care...trust it will heal completely...nothing worse than sore knees....