Causes of knee pain

You’re on this website, so odds are good you’re experiencing some knee pain. Maybe you hurt yourself recently while playing sports, or perhaps it’s nagging pain from an old injury.

Your knee’s articular cartilage experiences substantial stress every day. Even walking up stairs increases pressure on your knees. During vigorous activities such as sports that involve running or jumping, this pressure is intensified.

  • Repetitive trauma caused by sports or a very physical job can begin to wear down and weaken articular cartilage over time.
  • A traumatic or severe incident can cause the cartilage to “shear off,” fully exposing the bone.
  • Bursitis, tendonitis, patellofemoral pain syndrome, and otheroveruse” injuries—caused by repetitive activities such as stair climbing, jogging, or other stresses on the knee joints—lead to irritation and inflammation.
  • Sprains cause the ligaments that connect bone to bone to be stretched—or they may be partially or completely torn.