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Thoracic pediculectomy for acute spinal cord decompression in high-risk spinal deformity correction: illustrative case

J. Manuel Sarmiento, Christina Rymond, Alondra Concepcion-Gonzalez, Chris Mikhail, Fthimnir M Hassan, and Lawrence G Lenke

global, more rounded deformities. They reported that patients with a T-DAR greater than or equal to 25 were at much higher risk for intraoperative spinal cord monitoring events. A 2022 follow-up study by Puvanesarajah et al. 8 showed that 3D CT further improved IONM event prediction as compared to traditional radiographic measurements. Our patient had a T-DAR of 20.9 and 3D-CT DAR of 19.6, so although her deformity did not reach the cutoff value of 25, it is important to remember that she did have a type 3 spinal cord at the apex of her deformity, which placed her at