“…It is commonly associated with chronic hemarthrosis, which involves recurrent bleeding in the joint space. 12 , 13 The pathophysiological process of hemarthrosis involves the participation of inflammatory cells, interleukins, neo-angiogenesis, and the formation of a protein complex called inflammasome, which contributes to the inflammatory response and subsequent damage to the synovial membrane. 13 This, in turn, induces synovial hypertrophy and fibrosis and, in the long run, loss of cartilage and development of subchondral cysts.…”