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Ifije Ohiorhenuan, Vedat Deviren and Juan S. Uribe

Deformity correction using minimally invasive surgical (MIS) techniques can be challenging. Here the authors present a case in which an anterior column resection was performed using an MIS lateral approach to restore lumbar lordosis and improve sagittal balance. The authors demonstrate the technique and discuss potential complications and how they may be avoided.

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Michael Y. Wang, Stacie Tran, G. Damian Brusko, Robert Eastlack, Paul Park, Pierce D. Nunley, Adam S. Kanter, Juan S. Uribe, Neel Anand, David O. Okonkwo, Khoi D. Than, Christopher I. Shaffrey, Virginie Lafage, Gregory M. Mundis Jr., Praveen V. Mummaneni and the MIS-ISSG Group

. Boldface type indicates statistical significance. Notably, there were, on average, greater changes in the PI-LL mismatch and SVA despite the decreased number of levels treated. This finding is best explained by surgeons’ greater selectivity in choosing interbody levels and achievement of greater correction per interbody level. The increase in anterior column resection (ACR) from 0% to 36.4% of cases likely accounts for this finding. In contrast to the sagittal correction, less coronal correction was noted on average in 2015, which is likely attributable to the decreased

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Joseph F. Cusick, Joel Myklebust, Sanford J. Larson and Anthony Sances Jr.

to sciatic nerve stimulation recorded from the dorsal epidural space cephalad to the region of bilateral anterior, lateral and dorsolateral column resection (ACX and DLCX). The decreased amplitude showed almost total recovery within 30 minutes. The recordings (upper right) show the absence of wave-form alteration of the evoked potentials to cord stimulation recorded from the dorsal epidural space cephalad to the anterior column (ACX), lateral and dorsolateral column resections (DLCX). Bilateral Anterior Column Resection Two animals underwent

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Bailey A. Dyck, Christopher S. Bailey, Chris Steyn, Julia Petrakis, Jennifer C. Urquhart, Ruheksh Raj and Parham Rasoulinejad

, & anterior column resection 17 C6–7 fracture dislocation Fall C4–T2 posterior stabilization & fusion 18 C5–6 fracture in an ankylosed spine Fall C4–T2 posterior stabilization & fusion 19 T4 3-column fracture Fall T3–4 decompression, T1–7 stabilization, & fusion 20 C6–7, C7–T1, T5–6, T6–7 fracture dislocations; T6 burst fracture; complete SCI Motor vehicle crash C5–T9 stabilization & fusion, traumatic dural tear repair 21 C7 3-column fracture in ankylosing spondylitis Motor vehicle crash C4–T4 stabilization & fusion RA = rheumatoid arthritis; SCI = spinal cord injury

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Jean-Christophe Leveque, Vijay Yanamadala, Quinlan D. Buchlak and Rajiv K. Sethi

correction across a single segment of the spine. 10 , 13 The significant focal curvature may increase the risk of neurological injury due to dural bucking and the risk of hardware failure due to rod fracture and may be associated with higher rates of proximal junctional kyphosis due to nonharmonious realignment. 10 , 13 , 21 , 30 , 38 , 44 , 45 , 55 , 61 , 80 Techniques utilizing bridging rods or novel rod constructs have decreased but not eliminated this risk. 10 , 38 , 44 , 45 , 55 , 61 The anterior column resection (ACR) technique was first described in 2011 as a