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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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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