[Radiography of the proximal end of femur for measurements of angles (author's transl)].

Rariographic estimation of the angles between femoral neck and shaft and of antetorsion is a standard examination, particularly in infantile dysplasia. In the radiographs taken, mistakes are made owing to incorrect positioning of the patient. Recognition and prevention of incorrect positioning are discussed using Rippstein's radiographic technique for measuring the neck-shaft angle. Typical mistakes are shown and guidelines for correct positioning given. Since positioning with the legs abducted is technically limited, and alternative, different technique of positioning is described which appears to be less demanding.