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. 2022 Aug 19;33:101994. doi: 10.1016/j.jcot.2022.101994

Fig. 1.

Fig. 1

Fig. 1

Fig. 1

(a) Axial reformatted computed tomography (CT) scan showing the measurement of an oblique S1 sacral corridor, (b) axial reformatted CT scan showing the measurement of a transsacral S2 corridor, and (c) coronal reformatted CT scan showing the measurement of both the oblique S1 and transsacral S2 corridors.