title: [Calculation of the strain-deformation condition of the spinal motor segment during loading].
abstract: A mathematical model is proposed to analyze the spinal strain-deformation condition resulting from axial and lateral g-loads generated by changes in the gravity field and/or pilot's maneuvering high-performance aircraft. The solution algorithm takes into account changes in the intervertebral disk pressure and the fibrous ring shape at the time of close-to-critical g values. Calculation of the spinal strain-deformation condition was implemented by the instrumentality of computer system SPLEN (KOMMEK ltd., Russia). Analysis of the spinal strain-deformation condition was made for 2 types of external loads, i.e. normal and unilateral with a bending moment. Maximum permissible loads on a spinal segment were evaluated, as well as distribution of strain intensity, mean strains, spinal deformation and destruction field was described. The constructed computer models could be used as a basis for developing a technique of predicting characteristic spinal injuries in consequence of specific extreme loads and pathologies.
authors.forename: E N
authors.initials: EN
authors.lastname: Chumachenko
authors.forename: I V
authors.initials: IV
authors.lastname: Logashina
mesh_terms: D000337:Aerospace Medicine; D001696:Biomechanical Phenomena; D006801:Humans; D008962:Models, Theoretical; D012426:Russia; D013116:Spinal Cord / Q000503:physiopathology*; D013124:Spinal Injuries / Q000503:physiopathology*; D016474:Weight-Bearing