The chance to be able to walk upright upright

I have Scoliosis severely which has been made much worse after a fall I had a year and a half half ago which aggravated the deteriorating right knee and the length length off time it took to get surgery for knee replacement replacement caused me to walk incorrectly therefore caused me to walk bent over and knock kneed. I have a lot of pain and and can't stand up straight or or sit upright. It's going to be a year before I get to see the Orthopedic Surgeon before even going on the waiting waiting list for surgery. I'm a pensioner and can't afford to go private.