[Phosphate metabolism in the mineral matrix of intact bones and after single and multiple fractures]

The level of mineral matrix phosphates in unbroken bones was investigated in rats with isolated and multiple fractures. It was found out that in bones lying close to the broken one the phosphates exchange shifts were similar to the changes happening in the region of the trauma. On the resorption stage the phosphates level in the nearby intact tissue decreases, during the bone callus formation it increases, and in the process of remodelling decreases again. The authors suggest that this zone should be identified under the term "trauma field".