Does A Surgery For Spinal Stenosis Cause Difficulty In Walking?

I had surgery for spinal stenosis (cervical) in 2015. the reason numbness in hands and arms. After 6 wk. at home recovery went back to work on light duty. When walking I begin dragging my left leg. It was intermitting. The surgery was in Jan. In Nov. same year went hunting, Fell 16 and was knocked out. Don t remember why I fell but I had been in that stand hundreds of timeswith no problems. Had a concussion, broke shoulder, and 3 broke ribs. My suspition was my leg stiffened while decending. Time in hospital and since then haven t been able to walk without assistance and very slow. P.T. 3 times with little results. I know its a long story and I just hit on some of the highlights. My question is could the stenosis surgey be a cause of difficuty walkong?