Hello. I injured my left knee, working out at the gym. The pain is on the outer right side of my left jnee. The pain goes around my knee, and shoots all the way down my leg.It keeps locking up in me too,I have had meniscus tears, but they have been more on the inside of my knee, Right knee, as well.I don t know what U should do. I have no insurance, but I m afraid I might have an acl tear.I m having trouble walking on it.