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. 2012 Dec 21;7(12):e52284. doi: 10.1371/journal.pone.0052284

Figure 1. Varying levels of anatomical assumptions in the literature when simulating CSF in the cervical spine.

Figure 1

(Decreasing level of anatomical complexity from left to right, respectively). a) A subject-specific rigid wall geometry with CSF moving within a SSS of anisotropic porosity [15]. b) An idealized 2D SSS geometry including spinal cord nerve roots, arachnoid trabeculae and denticulate ligaments in a symmetric arrangement around the spinal cord [20]. c) A subject-specific 3D SSS geometry without small anatomical structures and geometric smoothing [23]. d) An idealized 3D geometry of a healthy subject [22]. e) The first simulation of CSF in the cervical SSS idealized as two concentric ellipses [14]. f) A 2D axisymmetric spinal cord and dura model with moving walls [30]. g) A 2D axisymmetric model of wave propagation in the spine based on an analytical solution of concentric elastic tubes [28]. Refer to Table 1 for details in each simulation.