At work yesterday myself and 4 other guys had to pull 6 of these 10 foot metal poles out of the pool as we are closing it for the winter. The poles are about 1 foot in diameter and they are in a metal sleeve about 8 inches tall.
We all took turns reefing on these poles out together for about 2 hours as they don't want to come out of the sleeves. So basically I would wrap my fore arms around the metal pole, squat down and pull up as hard as I could while pivoting side to side and stuff to shake the pole and and jiggle it out of the sleeve.
Anyway I was fine after we finished but then about 6 hours later when I was walking across my front lawn when I got a sharp pain in my right knee. It happened right as my right started to bend after being straight.
I started walking again and I was fine for about 10 minutes and then it happened again. Within an hour it would happen each time I took a step with a straight leg so I started walking with a light bend in my right knee at all times to avoid it. Today it still happens pretty easy although it's probobly a little less intense.
The main things iv noticed are that when I take a step I already know whether it's going to happen or not because as my right leg goes straight I feel a odd feeling like something is cought or whatever. Then as I start to bend my leg I get the painful snap. I have also noticed that when my right leg is straight and I pivot to the left then I get that painful snap intently every time.
Any opinions would be appreciated I don't know what's going on here. I was thinking acl but every thing I find on Google says an acl injury is instant and this took 6 hours to happen. Iv been stretching my quads a lot and it's still not fixed.