I am a 41-year-old woman with fleshy, painless lumps below my knee caps. These did not appear until perhaps the last 6 years, 3 years after I gave birth to my last child. In case it is relevant, I have jammed my knees on several occasions (jumping off swings, even in my 30s), and I have been bungee jumping. Additionally, I experience a great deal of knee pain when I exercise or kneel--I had to stop jogging and performing lunges because the pain was excruciating. I continue to exercise via stationary rowing routinely. I am also hyper-extended.
A physical therapist suggested that the lumps could be fat, but I am currently under weight, and after losing 10 pounds last year, the lumps did not reduce in size as the rest of my body did. The lumps do not show when I bend my knees. What could they be? I would like to find out so I know how to get rid of them.