 [ 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 ] do both then when she is adequately controlled you can ask the doctor to tapir off the metformin or stop it all together if her dietary changes are successful and permanent