I slipped in shower saturday night, right leg folded up no injury , left leg went straight out as I fell to the horizontal , if you can imagine a rope giving way (the fraying popping) that is what it felt like in the back of my leg. Sitting down on left leg with pressure on back of left leg very painful, bending over at waste very painful, walking up hill again painful. Have to sit on edge of chair on buttocks with left leg bent straight no good.