I injured my knee running on a hiking trail last year. The knee joint compressed, had to be reset and operated on. I was cleared by my doctor several months ago to resume full activity. I am doing squats, leg extensions machine at high resistance, climbing stairs, walking uphill. I'm still unable to get back to running because of the high impact. Any opinions on if Muay Thai beginners classes would be possible/advisable? I've always wanted to practice Muay Thai and am a signifcant fan of the sport. Any input would be appreciated.