[Studies with 99mTc-pyrophosphate of reparative osteogenesis during treatment of closed oblique fractures of the long tubular bones].

Altogether 56 patients aged 20-55 with closed oblique fractures of the upper and lower limb bones were observed. Reparative osteogenesis was studied using 99mTc-pyrophosphate. An elevated RP accumulation at the ends of the bone splinters was found from the 1st day after fracture. By the end of the 1st month after fracture the RP activity increased up to 750% in the absence of splinter dislocation. In dislocation it was 50-80% less. The RP maximal activity in the place of fracture was noted on the 7-8th week, in the dislocation of splinters on the 9-10th week. By the results of radionuclide studies, the fracture consolidated right after a decrease in the 99mTc-pyrophosphate accumulation that made it possible to determine the optimum time of bone consolidation.