Case Report
Isolated Congenital Absence of Lumbosacral Facet Joint
Figure 1
(a) Scout X-ray image showing the absence of the right L5-S1 zygapophyseal joint. (b) On axial spine MRI, the right articular process of S1 is absent, with the inferior articular process of the L5 markedly hypoplastic.
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(b) |