Hemarthrosis

Hemarthrosis
Other namesHaemarthrosis
Lipohemarthrosis (blood and fat in the joint space) seen in a person with a subtle tibial plateau fracture. The arrow indicates a fluid level between the upper fat component and the lower blood component.
SpecialtyRheumatology
SymptomsJoint pain, swelling, and redness

Hemarthrosis is a bleeding into joint spaces. It is a common feature of hemophilia.