Restoration features at femoral diaphyseal fractures in conditions of transosseous and intramedullary blocked osteosynthesis (experimental study)

UDC [616.718.45-001.5-089.227.84-003.93]-092.9

Emanov A.A., Gorbach E.N., Antonov N.I.

Summary. Both high incidence of femoral fracture occurrence and anatomic details of the hip organocomplex encourage orthopedists to develop new techniques for treatment optimizing. Due to the fact, studying the features of fracture healing under different biomechanical conditions in order to their further optimization remains relevant to date. The purpose of this study consisted in revealing the features of healing femoral shaft fractures experimentally under external spokerod fixation and intramedullary blocked osteosynthesis. Using 12 adult mongrel dogs authors performed an experiment consisting in reproducing a relevant model of femoral shaft transverse fracture and further osteosynthesis in one of the groups with a spoke-rod fixator, in another group – with ILoc (Biomedtrix, USA) system. The performed X-ray studies demonstrated very similar dynamics of bone union in the both groups of the experiment. The periods of fixation with a wire-rod device were within 42-70 days. The morphological investigations revealed earlier organotypical reorganization of the newly formed bone part and its histostructural organization proximity to similar intact structures under external fixation. The use of locked intramedullary osteosynthesis is justified in treatment of femoral shaft fractures due to the long period of union achievement. The use of transosseous osteosynthesis technique in treatment of such injury is advisable due to earlier organotypical reorganization of the newly formed bone part and its histostructural organization proximity to similar intact structures.

Keywords: dog femur, musculoskeletal function, fracture osteosynthesis, spoke-rod fixation, intramedullary blocked osteosynthesis, reparative regeneration, fusion of diaphyseal fractures, X-ray.

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Author affiliation:

Emanov Andrei A., Ph.D. in Veterinary Medicine, senior scientific researcher of the Russian Ilizarov Scientific Center "Restorative Traumatology and Orthopaedics" of Ministry of Healthcare of the Russian Federation; 6, M. Ulyanova st., Kurgan, 640014; phone: 8-3522-45-41-71; e-mail: a_eman@list.ru.

Gorbach Elena N., Ph.D. in Biology, leading scientific researcher of the of the Russian Ilizarov Scientific Center "Restorative Traumatology and Orthopaedics" of Ministry of Healthcare of the Russian Federation; 6, M. Ulyanova st., Kurgan, 640014; phone: 8-3522-45-41-71; e-mail: gorbach.e@mail.ru.

Responsible for correspondence with the editorial board: Antonov Nikolai I., Ph.D. in Biology, scientific researcher of the of the Russian Ilizarov Scientific Center "Restorative Traumatology and Orthopaedics" of Ministry of Healthcare of the Russian Federation; 6, M. Ulyanova st., Kurgan, 640014; phone: 8-3522-45-41-71; e-mail: aniv-niko@mail.ru.