Knee pain is a common complaint that affects people of all ages. Knee pain may be the result of an injury, such as a ruptured ligament or torn cartilage. Medical conditions — including arthritis, gout and infections — also can cause knee pain.
Many types of minor knee pain respond well to self-care measures. Physical therapy and knee braces also can help relieve knee pain. In some cases, however, your knee may require surgical repair.
The location and severity of knee pain may vary, depending on the cause of the problem. Signs and symptoms that sometimes accompany knee pain include:
- Swelling and stiffness
- Redness and warmth to the touch
- Weakness or instability
- Popping or crunching noises
- Inability to fully straighten the knee
When to see a doctor
Call your doctor if you:
- Can’t bear weight on your knee
- Have marked knee swelling
- Are unable to fully extend or flex your knee
- See an obvious deformity in your leg or knee
- Have a fever, in addition to redness, pain and swelling in your knee
- Feel as if your knee is unstable or your knee “gives out”
Types of arthritis
More than 100 different types of arthritis exist. The varieties most likely to affect the knee include:
- Osteoarthritis. Sometimes called degenerative arthritis, osteoarthritis is the most common type of arthritis. It’s a wear-and-tear condition that occurs when the cartilage in your knee deteriorates with use and age.
- Rheumatoid arthritis. The most debilitating form of arthritis, rheumatoid arthritis is an autoimmune condition that can affect almost any joint in your body, including your knees. Although rheumatoid arthritis is a chronic disease, it tends to vary in severity and may even come and go.
- Gout. This type of arthritis occurs when uric acid crystals build up in the joint. While gout most commonly affects the big toe, it can also occur in the knee.
- Pseudogout. Often mistaken for gout, pseudogout is caused by calcium-containing crystals that develop in the joint fluid. Knees are the most common joint affected by pseudogout.
- Septic arthritis. Sometimes your knee joint can become infected, leading to swelling, pain and redness. There’s usually no trauma before the onset of pain. Septic arthritis often occurs with a fever.
For more about natural health and holistic therapies, do join us at The Therapy Book. Just click on the book below:
For more about the causes of knee pain, go to the rest of this article at Mayo Clinic.