[Experimental and clinical substantiation of the functional transpedicular stabilization of the vertebral column]

Metallic construction for transpecular stabilization (transpedicular constructions T-TPC). Titanium nickelide (TiNi) alloys have come into existence in the surgical treatment of diseases of the vertebral column and spinal cord. The properties of these alloys are the storage of a shape, superelasticity, and cyclic longevity. The adequate mechanical behavior of live tissues and TiNi-based alloys suggests that metallic constructions made from TiNi are more physiological and functional than those made from steels and titanium alloys. The foregoing makes it possible to consider the design of metallic constructions to be promising for transpedicular spinal stabilization involving the latter's reliability and stability with the physiological and functional capacities of TiNi fixing arms. The study performed computer-assisted simulation of surgical treatment for different spinal diseases by using TPC by means of the programme package ANSYS and statistical and cyclic studies of TPC up to the international standards on a Terotest testing machine. The experimental findings were used to formulate recommendation to use TPC of varying rigidity to treat spinal injuries and diseases. Eight operations were performed to treat patients with diseases of the lower thoracic and lumbar parts of the vertebral column, by using TiNi rod of the optimum rigidity, which yielded good clinical results.