It is not clear, due to lack of sufficient data, if preventative therapy with clotting factor concentrate is also effective at reducing joint deterioration if treatment is started after joint damage has occurred. Complications
Up to a quarter of all severe ligament or capsular knee injuries leading to a hemarthrosis are associated with cartilage damage that can lead to progressive degenerative arthritis. References


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Pneumoretroperitoneum is the presence of air in the retroperitoneum. It is always a pathological condition and can be caused by a perforation of a retroperitoneal hollow organ such as the duodenum, colon or rectum. Pneumoretroperitoneum can best be identified by CT scan. See also
Pneumoperitoneum


== References ==