[Mineral metabolism of the growing bone and its disturbances--methods of radiological examinations (author's transl)].

New possible interactions of vitamin D and its derivates are discussed with reference to metabolism of calcium and phosphorous and its effects on the skeletal system. The degree of osteoporosis and osteomalacia determined only by means of roentgenology depends on subjective factors. A survey is presented about objective determination which includes skeletal mineral content by radiology and nuclear medicine examination. Following a survey of our own investigative methods and results the follow-ups in various forms of vitamin D refractory rickets are reported.