I am in my late 50's, & was bouncing on a trampolene 4 weeks ago with my grandchildren, ( I know!) I did some "knee drops" & 2 days later the back of my knee was really stiff, then painful 3 days afterwards. It's like a dull ache now all around my knee. I usually go for a 10 minute morning run, but stopped doing this from when I felt the pain, until this morning, 4 weeks later, when I went for a 5 minute run with a crepe bandage around the knee. Tonight I took an ibuprofen, which worked, but does anyone have advice for quick healing please? Knee is stiff & painful when I bend or kneel down, and pain sometimes radiates towards ankle. I've never had a knee injury before.