Evaluation of ischemic distraction regenerated bone for polylocal lengthening of fragments in patients with long bone defect (an ultrasound study)

Purpose. To study special features of the structural state of distraction regenerated bones for polylocal lengthening of fragments in patients with long bone defects with one of the regenerated bone formation by “ischemic” type. Materials аnd Methods. The results of ultrasound examination ("Aloka" SSD–630, Japan, Voluson 630PRO, Austria) of the special features of distraction regenerated bone structural state for polylocal lengthening of fragments in four patients with long bone defects presented in real-time mode using linear ultrasound sensors of 7.5-MHz frequency. Results. Formation of the first regenerated bone occurred by “ischemic” type: the absence of paraosseous and endosteal reaction in the zone of distraction regenerated bone with its structure disorder and hypoechogenic foci visualization. Additional osteotomy and further distraction caused the intensification of reparative processes and the acceleration of organotypical reorganization of previously formed distraction regenerated bone in two patients (50 % of cases). Conclusion. The formation of distraction regenerated bones for consecutive multilevel lengthening of the fragment proceeds independently in patients with acquired bone tissue defects.