The "V" Sign: A Reliable Anatomic and Radiographic Landmark for Posterior Percutaneous S1 Screw Placement.
Tony TannouryAziz SaadeDylan Chevalier ThomasJonathan J WiscoQasim AjmiVarun SinghMohamad AbdalKaderChadi TannouryPublished in: JB & JS open access (2023)
Diagnostic Level IV. See Instructions for Authors for a complete description of levels of evidence.