My knee pops every time I do the high jump in track?

Everytime I do the high jump, my knee cracks and it's very painful. I do have knee problems but what can I do about this?|||step away from high jumping for the next meet =/





i do high jump too in h.s. track n field and have painful shin splints on my foot i jump off of, but in high jump in meets, it barely hurts cuz i dont think about it, the momentum just carries me through. but after, it hurts like hell :(