Pediatric Hemarthrosis

Pediatric Hemarthrosis



Hemarthrosis happens when there is bleeding into a joint.

Expanded overview

Hemarthrosis is a condition where there is bleeding into a joint due to a complication, such as a blood disorder or a traumatic injury to the joint. The most common places hemarthrosis occurs are the knees, ankles and elbows.


Most cases of hemarthrosis happen after a traumatic injury to the joint. If your child has hemophilia or another blood disorder that affects blood clotting and makes them bleed more easily, hemarthrosis may happen after a minor injury, such as falling down or bumping into an object.

Risk factors

Your child is more at risk for hemarthrosis if they have a blood disorder, such as hemophilia. In addition, if your child is taking a blood thinner, such as warfarin, they are more at risk for hemarthrosis.


Symptoms of hemarthrosis may include:

  • Bleeding gums after brushing teeth or dental work
  • Bleeding longer or more than usual after injury or surgery
  • Blood in the urine
  • Bruising easily
  • Deep bruising due to bleeding in the muscle after routine shots or minor injuries
  • Frequent nosebleeds
  • Joints that feel warm or have a tingling sensation
  • Pain and swelling at the joint
  • Prolonged bleeding in babies after the umbilical cord is cut or after a male is circumcised
  • Refusal to move an arm or leg because of joint pain

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