1) Blood in a joint 
Hemarthrosis (or haemarthrosis, plural h(a)emarthroses) is a bleeding into joint spaces. ==Causes== It usually follows injury but occurs mainly in patients with a predisposition to hemorrhage such as those being treated with warfarin (or other anticoagulants) and patients with hemophilia. It can be associated with knee joint arthroplasty. It has a...
(from the article `joint disease`) Hemarthrosis (bleeding into the joints) is a major complication of hemorrhagic disorders. Aside from the life-threatening episodes of bleeding, it ...
(he″mahr-thro´sis) blood in a joint cavity; called also hemarthros.
Type: Term Pronunciation: hēm′ar-thrō′sis, hem′ar- Definitions: 1. Blood in a joint.
Hemarthrosis: Blood in a joint.
Bleeding into a joint.
bleeding into a joint.