I was in a motorcycle accident a year ago. Tore my mcl, knee derangement, bruising to the bone, ect. I went to have a scope, and they took out the appendix of my knee. It was helping, so I got shots done. Didn t help, so I got the three step shots done. A year later: I was at work the other day when my whole right side went numb from pain in that knee. What could it be?