Anatomical and biomechanical substantiation of the transplant for reconstructive surgery of the orbit bone walls

The purpose is to study biomechanical parameters of elastin biomaterial's (BM) fibroarchitectonics. Material and Methods. For the study we usedxenogenic biomaterial made on the basis of the ligamentum nuchae (L. n.)) Bos taurus taurus, L. 1758. For histological examination of BM (n=24), we used electron microscopy (Jem-1011 microscope) and reflected light microscopy of histotopographic sections in the three planes, taking into account the orientation of elastic fibers (EF). Sections were stained with oreina, as well as according to Mallory and Van Gizon, they were impregnated according to Fut method. The mechanical properties of the material were studied on 11 samples with a size of 10x8x16 mm using a Zwick/Roell Z010 breaking machine, which allows for compression deformation. The strength of the suture fixation was determined by the tensile load (Pmax). To characterize the elastic properties of BM, the Young's modulus was calculated. Results. In the elastic deformation zone, the Young's modulus was 1.74±0.1 N/mm2. Subsequent loading of the BM led to deformations with stratification and formation of lamellar fragments. After removing the load, the BM restored its shape and size. BM fibroarchitectonics provides high strength of suture fixation. Conclusion. The BM fibroarchitectonics and the set of its structures form a single elastic-collagen complex. The results allowed us to develop structurally modified BM with osteoinductive properties.