Implant of the anatomical shape of the human spine

The article offers options for constructing anatomically shaped vertebra implants. We have created various constructions of human thoracic vertebrae implants. The 3D model of a vertebral implant structure consists of three elements that are mated along the surfaces passing through the vertebral foramen (vertebraeforamen). To ensure the rigidity of the implant structure in the assembled state, the interface surfaces of its elements were made as freeform surfaces. Fixation of the implant elements in the assembled state is carried out using fasteners, which are either removed or retained after patient rehabilitation. The interface surfaces of the implant elements, the place of installation of the fasteners, as well as its type are determined by medical indications: existing medical practice, the nature of the vertebral injury, the plan for the upcoming surgical intervention, etc. The assembled vertebral implant structure can have a cavity in the center of the structure or be integral. In the first case, the implant has a weight equal to the weight of the vertebra before it was injured. In the second case, the weight of the implant exceeds the weight of the vertebra before it was injured. In this case, the rigidity of the implant when the structure is compressed exceeds the rigidity of a healthy vertebra. On the surface of the 3D model of the vertebra implant, it is possible to perform microroughnesses of various structures. This circumstance makes it possible to simulate the modes and types of technological impact during the manufacture of an implant. The presence of microroughnesses on the surface of the implant contributes to its successful integration into adjacent anatomical structures, and also has antibacterial properties. The implant designs developed by us can be used to treat injuries of the human cervical, thoracic and lumbar vertebrae.