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Tests and diagnosis
By Mayo Clinic staffDiagnosis is based primarily on your symptoms and a physical exam. Tell your doctor about your typical activities and any recent changes to your routine. To gauge your knee's strength and alignment, your doctor may ask you to walk, jump, squat or move your knee in certain ways. He or she may detect tenderness or feel a grinding sensation below your kneecap when you extend your knee.
Your doctor may recommend X-rays or other imaging tests, such as an MRI or CT scan, to help determine the cause of your knee pain. If your symptoms are severe, a minor surgical procedure known as arthroscopy may be helpful in treating this condition.
