Computational Investigation for Biomechanical Characteristics of Lumbar Spine with Various Porous Ti–6Al–4V Implant Systems

(1) Background: Metallic materials are predominantly used for spinal implants, and they can damage adjacent bones intervertebral discs (IVDs) owing to their high elastic moduli. Consequently, there is a possibility that serious complications, such as kyphosis, may occur the sequelae progresses. In this study, behavior of lumbar spine implant system was evaluated using finite element (FE) method, by applying porous structure implants resolve problem metal implants. (2) Methods: An FE model developed 3–5, it assumed that, disease occurrence, were placed in 3–4. Currently, Ti–6Al–4V most commonly material The shape set form diamond, porosity varied over nine values ranging from 0 81%. Finally, equivalent properties derived Ramberg–Osgood formula, with reference experimental study. (3) Results: range motion increased, stress IVD, bone pedicle screw cage, decreased increasing As decreased, safety factor exhibited tendency decrease rapidly. (4) Conclusion: Motor capacity improved, tissues Therefore, future, structures significantly contribute improvement through continuous complementary research.