I have a pea sized lump on inside of my knee that is movable (2-3 inches in range).  I have some cartiledge loss in the knee itself.  could  this be a piece that came loose?  Its not always there but appears after strenuous activity.  Cant alway find it.  ?
Hello! Thank you for the query. Such lump is most likely a kind of ganglion. It is a benign cyst connected with a joint which contains joint fluid. Cartilage loss is rather not related to this lump. However, such cyst can appear after a knee injury. I suggest you to consult orthopedist. Knee ultrasound should be done. If this needs a surgery, arthroscopy needs to be done. Hope this will help. Regards.