[Homo erectus haemophilus - the haemophilic arthropathy of the leg].

The haemophilic arthropathy of the hip, the knee and the ankle makes a painful loss of the degree of movement. Especially the muscles which bend these joints are contracted. This means a loss of posture and quality of life as well. This article demonstrates the possibilities of the conservative and operative treatment and represents an algorithm of the indication of operative measurements. Finally, there is a report about the straighten up and the re-socialisation of a patient with haemophilia by total hip and knee arthroplasty.