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  Indian J Med Microbiol
 

Figure 4: (a) Aberrant branch (black arrow) is seen below C1 lamina over (dorsal) C1/2 facet joint. (b) A notch is drilled at the inferior border of the C1 lamina at the midpoint of the lateral mass. Aberrant branch retracted inferiorly. (c) A sharp probe is entered through the notch entry point directed anteriorly, superiorly, and medially in lateral mass of C1. (d) A 3.5-mm polyaxial screw is secured. The superior border of C1 lamina was not breached. This is more of a combination of the notch and inferior laminar entry points. Aberrant vessel just retracted and not relocated

Figure 4: (a) Aberrant branch (black arrow) is seen below C1 lamina over (dorsal) C1/2 facet joint. (b) A notch is drilled at the inferior border of the C1 lamina at the midpoint of the lateral mass. Aberrant branch retracted inferiorly. (c) A sharp probe is entered through the notch entry point directed anteriorly, superiorly, and medially in lateral mass of C1. (d) A 3.5<b>-</b>mm polyaxial screw is secured. The superior border of C1 lamina was not breached. This is more of a combination of the notch and inferior laminar entry points. Aberrant vessel just retracted and not relocated