 [ Symptoms ] popped knee 7 years ago got worse how to reduce swelling and pain [ Disease ] hi dear… you can reduce the swelling by using ice application for 3 4 days and you can try iontophoresis or phonophoresis techniques in physiotherapy used to introduce anti inflammatory ointments into the joint…this may help but you should do a mri for your knee so u can figure out what exactly is causing your knee swelling get well soon