Causes of Knee Pain

Knee pain is usually caused by some sort of physical injury, such as a bruise, soft tissue injury, sprain, strain, fracture, and so on. However, various joint disorders such as arthritis and gout are possible. There are various other causes of knee pain. Categories include:

Knee Injuries: Various types of physical injury to the knee are possible:

  • Bruise (contusion)
  • Knee strain
  • Knee sprain
  • Sprain of collateral ligaments
  • Soft tissue injury
  • Cruciate ligament injury
  • Meniscus injury (Torn meniscus)
  • Ruptured extensor mechanism
  • Muscle injury
  • Knee fracture
  • Knee dislocation

Hemarthrosis (Joint Bleeding): Bleeding into the joints is called “hemarthrosis”, and may affect the knee joint:

Knee Inflammation Disorders: Various types of inflammatory disorders may affect the knee, such as:

Arthritic Disorders: Various types of arthritis cause knee pain (“knee arthritis”), which may affect only the knee, or may also affect other joints as well. Types of arthritis include:

Systemic Joint Disorders: Various systemic inflammatory disorders and infections may affect the knee joint (possibly with other joints also involved):

Other Causes: Various other causes of knee pain are possible:

  • Scurvy
  • Osteochondritis dissecans
  • Chondromalacia patella
  • Popliteal cyst
  • Radiculopathy
  • Osgood-Schlatter Disease
  • Osteogenic sarcoma
  • Osteochondroma

Similar Symptoms: See also the possible causes of related symptoms:

Note: This site is for informational purposes only and is not medical advice. See your doctor or other qualified medical professional for all your medical needs.