Geometric Model for the Postural Characterization in the Sagital Plane of Lumbar Raquis
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The individual’s posture is the physical expression of his body. It is modified throughout life and it is determined by the particular anatomical characteristics that directly affect the biomechanics of the spine. The typing of the spinal curvature is important for the knowledge of body posture. The possibility of having a method for the systematic postural characterization of the spine is an essential objective resource in order to obtain normal or control patterns of the spinal morphology of the population. A widely accepted methodology of morphological characterization of the spine is a necessary requirement for the establishment of preventive criteria for spinal pathologies based on epidemiological population studies. It also represents a necessary requirement for the classification of individuals, based on the biomechanical, orthopaedic or ergonomic criteria necessary for disciplines such as sports, industrial design or sports performance. The present study proposes the development of a morphological postural model of the spine in the lumbar region. The model is based on a system of measurement of objective and comparable parameters by means of X-ray analysis, in order to characterize its morphology in the sagittal plane. The comparison of the results in a population of 47 individuals allowed the possibility to carry out a statistical study on three morphological parameters: sacral angle (α1); reversal angle (α2) and degree of lordosis (DL). The statistical hypothesis that the results behave according to a normal distribution with p < 0.05 is relevant and allows the systematization and postural modelling of the individual.
KeywordsMorphological model Lumbar región Spine
Compliance with ethical standards
Conflict of interest
Pilar San Pedro declares that he has no conflict of interest. Fernando Blaya declares that he has no conflict of interest. Roberto D’Amato declares that he has no conflict of interest. Juan A. Juanes declares that he has no conflict of interest. Luis Tomás Gallego Morales declares that he has no conflict of interest. José Antonio Rodríguez Montes declares that he has no conflict of interest. This article does not contain any studies with human participants performed by any of the authors. This article does not contain any studies with animals performed by any of the authors.
- 1.Gagey, P.-M., Weber, B., and Faig Martí, J., Posturología: regulación y alteraciones de la bipedestación. Masson, 2001.Google Scholar
- 4.Miller-Keane, B. F., and O’Toole, M. T., Encyclopedia & dictionary of medicine, nursing, and allied health. Saunders, 2003.Google Scholar
- 8.Harrison, D. D., Harrison, D. E., Janik, T. J., Cailliet, R., and Haas, J., Do Alterations in Vertebral and Disc Dimensions Affect an Elliptical Model of Thoracic Kyphosis? Spine (Phila Pa 1976) 28:463–469, 2003. https://doi.org/10.1097/01.BRS.0000048648.73805.98.CrossRefGoogle Scholar
- 9.Harrison, D. D., Cailliet, R., Janik, T. J., Troyanovich, S. J., Harrison, D. E., and Holland, B., Elliptical modeling of the sagittal lumbar lordosis and segmental rotation angles as a method to discriminate between normal and low back pain subjects. J. Spinal Disord. 11:430–439, 1998.CrossRefGoogle Scholar
- 11.Akamaru, T., Kawahara, N., Tim Yoon, S., Minamide, A., Su Kim, K., Tomita, K., and Hutton, W. C., Adjacent segment motion after a simulated lumbar fusion in different sagittal alignments: a biomechanical analysis. Spine (Phila Pa 1976) 28:1560–1566, 2003.Google Scholar
- 14.Cano-Gómez, C., Rodríguez de la Rúa, J., García-Guerrero, G., Juliá-Bueno, J., and Marante-Fuertes, J., Physiopathology of lumbar spine degeneration and pain. Rev Esp Cir Ortop Traumatol 52:37–46, 2008.Google Scholar
- 22.Bushong, S. C., Manual de Radiología para Técnicos, 9a. Barcelona: Grafos S.A, 2010.Google Scholar
- 23.Corbella Barrios, D., Técnicas de representación geométrica : fundamentos de concepción espacial. Madrid: El autor, 1993.Google Scholar