 [ Symptoms ] issue with knee my fiancé is 41 years old and he is fairly active with jogging and walking about a month ago he felt something pop really hard in his knee and he had some pain with it along with a bit of swelling he figured he would stay off his knee for a while and it would heal itself he is still has the popping sound when he walks or moves his knee and he says that it feels like something is rolling around inside under the kneecap no pain unless the knee is pressed on what would be the issue  [ Disease ] persistent knee pain lasting over a month from a jogging injury where there was a loud pop could be many things but a full or partial tear of one of the ligaments tendons or menesci would be high on the list as well as cartilege tears it would be in your fiance is best interest to see a good orthopedist he should have done this weeks ago he may need some imaging studies like an mri of that painful knee i sounds like he damaged the ligaments under the knee which only hurts when you pressure on the knee like kneeling of touching he should get it checked out soon the longer he waits the worse it will become because of inflammation under the knee this will cause the knee to eventually lock in a slight bent position and then it will be difficult to move and that is something that you do not want