Diagnosis
During the physical exam, your doctor is likely to:
- Inspect your knee for swelling, pain, tenderness, warmth and visible bruising
- Check to see how far you can move your lower leg in different directions
- Push on or pull the joint to evaluate the integrity of the structures in your knee
Imaging tests
In some cases, your doctor might suggest tests such as:
- X-ray. Your doctor may first recommend having an X-ray, which can help detect bone fractures and degenerative joint disease.
- Computerized tomography (CT) scan. CT scanners combine X-rays taken from many different angles to create cross-sectional images of the inside of your body. CT scans can help diagnose bone problems and subtle fractures. A special kind of CT scan can accurately identify gout even when the joint is not inflamed.
- Ultrasound. This technology uses sound waves to produce real-time images of the soft tissue structures within and around your knee. Your doctor may want to move your knee into different positions during the ultrasound to check for specific problems.
- Magnetic resonance imaging (MRI). An MRI uses radio waves and a powerful magnet to create 3D images of the inside of your knee. This test is particularly useful in revealing injuries to soft tissues such as ligaments, tendons, cartilage and muscles.
Lab tests
If your doctor suspects an infection or inflammation, you’re likely to have blood tests and sometimes a procedure called arthrocentesis, in which a small amount of fluid is removed from within your knee joint with a needle and sent to a laboratory for analysis.
Treatment
Treatments will vary, depending upon what exactly is causing your knee pain.
Medications
Your doctor may prescribe medications to help relieve pain and to treat the conditions causing your knee pain, such as rheumatoid arthritis or gout.
Therapy
Strengthening the muscles around your knee will make it more stable. Your doctor may recommend physical therapy or different types of strengthening exercises based on the specific condition that is causing your pain.
If you are physically active or practice a sport, you may need exercises to correct movement patterns that may be affecting your knees and to establish good technique during your sport or activity. Exercises to improve your flexibility and balance also are important.
Arch supports, sometimes with wedges on one side of the heel, can help shift pressure away from the side of the knee most affected by osteoarthritis. In certain conditions, different types of braces may be used to help protect and support the knee joint.
