[Transient arthritis of the hip in childhood and Perthes disease (author's transl)].

The possibilities of the relationship between transient arthritis of the hip and Perthes disease have been analysed here. They pointed to the fact, that the intra-articular pressure is increased by the overproduction of the synovial fluid as a result of inflammation, and a continuously high pressure can lead to necrosis of the femoral of inflammation of the femoral capital epiphysis. Experiences are reported here, when an intertrochanteric osteotomy at the early stage of Perthes disease was performed with simultaneous fenestration of the joint capsule for decompression, and a great amount of synovial fluid was discharged under high pressure. They conclude therefore, that transient synovitis can not be regarded only as a harmless condition, but it can precede Perthes disease.