Just using the diagram here on BS I'd say it's around 120. PT started about 6-7 weeks after the infection surgery because even though I was allowed to bend at 4 weeks my body stopped making white cells, so I stayed in the house, only venturing out to get blood work done. It took 2-3 weeks before the white cell count rose and we didn't have to worry about infection of any kind. So for those few weeks I concentrated on walking with a bend and non-aggressive heel slides. My OS showed me how he wanted me to do them by sliding my foot about 2 inches.
My extention is in the negative number. PT never worked on extention at all. I am very bendy, but my left natural knee doesn't have good extention at all. I'm able to do everything I want except sit with my leg tucked under me. But I can't do it with my left anymore either. Today I walked over 3 miles and rode 8 miles on my exercise bike. Don't think I can ask for much more.