Fig. 9.8c Vertebrae and slightly movable joints: (c) Age changes (Thinner compact bone, less dense spongy bone, thinner intervertebral disc, nucleous pulposus bulging into weak vertebrae, concave vertebral surfaces, narrower joint spaces). (Sources of images and videos below. Used with permission.)

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https://commons.wikimedia.org/wiki/File:Functional_spinal_unit_(FSU).webp

Description English: Functional spinal unit (FSU). The FSU represents the smallest motion segment of the spine and exhibits biomechanical characteristics similar to those of the entire spine. Approximately 70% of applied axial compression is transmitted by the vertebral body and the intervertebral discs, with the remaining 30% of the load being distributed through the facet joints

Date 22 March 2018

Source Kushchayev, S.V., Glushko, T., Jarraya, M. et al. ABCs of the degenerative spine. Insights Imaging 9, 253–274 (2018). https://doi.org/10.1007/s13244-017-0584-z

Author Irina Nefedova

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