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Knee Joint Pain or Damage

Chronic knee pain, instability, arthritis, or injury that may be connected to military running, jumping, carrying loads, falls, or repetitive strain.

Pain & Musculoskeletal
  • What causes knee joint pain and damage?
    MedlinePlusMay 2026

    Knee pain and damage can come from many causes, including wear and tear on the cartilage (tissue covering bone ends), injuries, or autoimmune diseases like rheumatoid arthritis where your immune system attacks joint tissue. The damage happens when this protective tissue breaks down, causing pain and swelling.

  • How is rheumatoid arthritis different from osteoarthritis?
    MedlinePlusMay 2026

    Rheumatoid arthritis is an autoimmune disease where your body attacks joint tissue, while osteoarthritis is wear-and-tear damage that usually comes with age. RA can affect many joints and other body parts, but osteoarthritis is typically just about the joints wearing down over time.

  • Will I always have knee joint pain with rheumatoid arthritis?
    MedlinePlusMay 2026

    With rheumatoid arthritis, you may have ongoing pain, swelling, and stiffness, but early treatment can help manage these symptoms and reduce further damage. Many people with RA can lead productive lives with the right care plan.

  • Why does my knee hurt when the tissue covering bone ends wears down?
    MedlinePlusMay 2026

    When the cartilage (smooth tissue) covering the ends of your bones wears down, the bones rub together, causing pain and inflammation. This damaged area becomes irritated and swollen, which is why your knee hurts.

  • Can knee joint problems lead to other health issues?
    MedlinePlusMay 2026

    Yes, rheumatoid arthritis can cause inflammation that affects other parts of your body beyond your joints, including your eyes, skin, heart, nerves, blood, and lungs. This is why treating RA early is important to prevent these complications.