[Perthes disease-diagnosis, classification and treatment based on Aachen-Dortmund treatment algorithm].

Legg-Calvé-Perthes disease is a multifactorial idiopathic necrosis of the hip that typically occurs in childhood between the ages of 3 and 12. Treatment adapted to the stadium of the disease and to the clinical findings is medical art. The treatment is focused on the preservation or recovery of the arthrogenic containment of the femoral head. Multiple treatment options are available. The indications for treatment can be derived from clinical and radiological pathology. Structuring of the therapy options is the aim of this publication. For this purpose, a clear and concise overview of relevant clinical findings and useful radiographic classifications as well as reasonable therapy is presented.