Hi when I bend my knee more than 90degrees its painfully. I have had two operations for cartilage and neither has helped. I have found a hard lump back of left knee on the left side and I guess when I bend my this presses on things and cause pain. What can it be. I have had this problem now for years.
Hello, As a first line management you can take analgesics like paracetamol or diclofenac for pain relief.  If symptoms persists better to consult an orthopaedician and plan for an MRI scan. Hope I have answered your query. Let me know if I can assist you further.