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Two-year results of single-level fixation with lateral mass screws for cervical degenerative spondylolisthesis: patient series

Hiroyasu Kodama, Naohiro Kawamura, Junichi Ohya, Yuki Onishi, Chiaki Horii, Mitsuhiro Nishizawa, Masaya Sekimizu, Yuji Ishino, and Junichi Kunogi

navigation system. At the discretion of the surgeon, autologous bone grafting into the immobilized facet joint was performed. The length of time for wearing the cervical collar was 2 to 3 months, depending on the surgeon. Patient Demographics and Radiographic Measurements Patient medical records were retrospectively reviewed to examine age, sex, current smoking habits, dialysis status, surgical procedure including the presence or absence of bone grafting to the facet, preoperative and postoperative neck pain using the numeric rating scale (NRS), cervical myelopathy

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Multiple three-column osteotomies successfully correcting cervicothoracic kyphosis in the setting of ankylosing spondylitis: illustrative case

Luke Mugge, Paul Gorka, Cristie Brewer, and Brian McHugh

significant for AS, which had been diagnosed 15 years prior. He also had a diagnosis of osteoporosis with a T-score of 2.7 and was being treated with Voltaren and Fosamax. His chin-brow angle was 0°. Neurologically, the patient was intact and without balance issues. Preoperative radiographs ( Fig. 1 ) and radiographic measurements were as follows: pelvis and shoulders were level; pelvic incidence (PI) was 59.3°; pelvic tilt (PT), 38.2°, lumbar lordosis (LL), 5.0°; and sacral slope (SS), 20.7°. Chin-brow vertical angle (CBVA) was 58.0°; T1 slope (T1S), 97.8°; thoracic

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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

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En bloc resection of a high cervical chordoma followed by reconstruction with a free vascularized fibular graft: illustrative case

Zachariah W. Pinter, Eric J. Moore, Peter S. Rose, Ahmad N. Nassr, and Bradford L. Currier

spondylectomy of C2. However, the O–C4 angle decreased from 33° preoperatively to 23° postoperatively, and the cross-sectional area of the oropharynx decreased from 361 mm 2 preoperatively to 268 mm 2 postoperatively ( Supplemental Figure 1 ). Despite our best efforts to position the patient intraoperatively to mimic his preoperative O–C2 angle, these radiographic measurements suggest that perhaps he should have been fused in a more extended position to recreate his preoperative occipitocervical alignment. Other possible etiologies for his persistent dysphagia include