Was at work last week, i was stepping in to the rear of the cab and while i stepped up and turned to sit in the seat something popped in the rear of my left knee and floored me. It felt like a cramp but much more painful (i didnt cry because im hard as fvck though).
I suspect it is the popliteus muscle, any one ever had a similar issue?.

Im thinking of seeing the Physio in work for further advise but this wont be until next week so in the mean time if anyone has any advise or tips or just story's about theirs popping, fire ahead.