[Experimental studies on the effect of thyrocalcitonin on secondary bone healing (author's transl)].

The effect of thyrocalcitonin on secondary bone healing was studied in 180 Sprague-Dawley-rats. The right tibia of all the rats was osteotomized. Half of the animals was treated with thyrocalcitonin. Until the 60th postoperative day, the increase in 99mTc-methylendiphosphonate activity was measured and significant differences in ratios were noted. Between the postoperative days 10 to 25, there was a significant difference in the impulse quotients between the thyrocalcitonin and untreated rats (P less than 0.05). These results indicate that thyrocalcitonin may aid in secondary bone healing.