[Changes in bone turnover under immobilization and remobilization. Animal experiments using 45Ca and tetracycline labelling (author's transl)].

This paper presents an experimental study of rabbits immobilized in plaster of paris casts. By means of Tetracycline and 45Ca-labelling an immobilisation over 12 weeks showed a significant diminuition of bone formation. In the first stages of remobilisation the bone formation was found to be increased and became normally in a later stage. The lower dorsal spine was not sufficiently immobilized in our experiments. Therefore significant changes of bone turnover could not be observed.