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Soya Kawabata, Kota Watanabe, Naobumi Hosogane, Ken Ishii, Masaya Nakamura, Yoshiaki Toyama, and Morio Matsumoto

combination, have improved outcomes for surgical correction of severe cervical spinal deformities. 8 , 13 , 20 , 35 We report on 3 patients with severe cervical kyphosis associated with NF1 who underwent correction and fusion in which a combination of modern spinal instrumentations was used. Case Reports Three patients with severe cervical kyphosis associated with NF1 underwent combined anterior and posterior correction and fusion surgeries to correct the spinal deformities. The ethics committee of Keio University School of Medicine approved this study. Case 1

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Yuji Matsuoka, Hidekazu Suzuki, Kenji Endo, Yasunobu Sawaji, Kazuma Murata, Hirosuke Nishimura, Hidetoshi Tanaka, and Kengo Yamamoto

preserve stability of the cervical spine, preventing postoperative kyphosis that can occur after laminectomy. Compared with laminectomy, the incidence of postoperative kyphosis is lower. 11 Postoperative cervical kyphosis can occur after ELAP even if the patient had sufficient preoperative cervical lordosis. 1 , 19 Previous studies have shown a younger age at the time of surgery, laminectomy of 4 or more levels, surgery involving the C-2 lamina, performance of facetectomies, and increased preoperative range of motion as predictive factors. 4 , 6 With the recent work

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Michael P. Steinmetz, Christopher D. Kager, and Edward C. Benzel

T he development of cervical deformity such as kyphosis may be secondary to advanced degenerative disease, trauma, neoplastic disease, or postsurgical changes. 12 Postoperative cervical kyphosis may develop after either ventral or dorsal approaches. After ventral cervical surgery, kyphosis may result from pseudarthrosis 6, 8, 18 or the failure to restore adequate lordosis during surgery. 8 Following dorsal surgery, kyphosis may develop and progress in response to disruption of the natural stabilizing structures, such as the tension band, of the dorsal

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Yuki Yamamuro, Satoru Demura, Hideki Murakami, Satoshi Kato, Noritaka Yonezawa, Noriaki Yokogawa, and Hiroyuki Tsuchiya

A dolescent idiopathic cervical kyphosis (AICK) is defined as a cervical kyphotic deformity without any cause such as congenital disease, postlaminectomy syndrome, posttraumatic deformity, neuromuscular disorders, tumor, or psychiatric disease. 1 , 5 , 6 , 8 , 10 , 11 AICK has a risk of progression to cervical kyphosis and myelopathy; therefore, surgical treatments are occasionally required. Herein, we present a case of progressive AICK successfully treated with perioperative halo-gravity traction followed by combined anterior-posterior collective fusion and

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Darryl Lau, John E. Ziewacz, Hai Le, Rishi Wadhwa, and Praveen V. Mummaneni

N ormal cervical lordosis is becoming well recognized as a critical component in maintaining normal sagittal alignment and sagittal balance. 28 When the normal cervical curvature is reversed and cervical kyphosis is present, patients may have pain symptomatology. 2 Cervical kyphosis has been shown to contribute to the pathogenesis of spinal cord injury and myelopathy through direct ventral pressure and flattening of the spinal cord. 17 , 37 , 40 Therefore, addressing cervical kyphosis is critical in improving functional status and mitigating potential

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Marci Madera, Alvin Crawford, and Francesco T. Mangano

dangerous are vertebral malformations that lead to instability of the cervical spine. In some patients, the pathological entity can contribute to cervical kyphosis, dramatic cervical spinal instability, and neurological deficit. Several sudden deaths in patients with Larsen syndrome, including 1 of Larsen and colleagues' 6 patients, were attributed to brainstem or spinal cord compression. 3 , 7 , 8 , 11 In our review of the English literature on cervical instability in patients with Larsen syndrome, multiple treatment options were described both before and after the

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Miki Katzir, Aboubakr T. Amer, Asad S. Akhter, Stephanus V. Viljoen, and Ehud Mendel

Transcript 0:21 This is a case describing a patient undergoing C1–2 disarticulation for correction of iatrogenic cervical kyphosis following occipital-cervical fusion. 0:31 This is a 70-year-old female with a history of breast cancer status post bilateral mastectomy and chemotherapy. She underwent occipital-cervical fusion at an outside facility for atlantoaxial instability and neck pain refractory to conservative therapy. This was done 7 months prior to presentation to our hospital. Following her initial fixation, she developed severe dysphagia ultimately

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Praveen V. Mummaneni, Sanjay S. Dhall, Gerald E. Rodts, and Regis W. Haid

-only or posterior-only approach, we typically use a combined ventral-dorsal approach in cases of severe multilevel kyphotic deformity to avoid pseudarthrosis and loss of correction. The present study is not intended to endorse combined ventral-dorsal approaches as superior to ventralalone or dorsal-alone correction of cervical kyphosis. Rather, we present this retrospective analysis to report the clinical and radiographic outcomes as well as the safety and efficacy of combined ventral and dorsal techniques for the correction of complex cervical kyphotic deformities

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Shannon Hann, Nohra Chalouhi, Ravichandra Madineni, Alexander R. Vaccaro, Todd J. Albert, James Harrop, and Joshua E. Heller

T he cervical spine provides the widest and most complex range of motion of all the spinal segments. It supports the mass of the head while allowing near-constant positional changes relative to the rest of the body. It is susceptible to degenerative misalignment with aging, and cervical deformity often necessitates surgical correction. Cervical kyphosis is one of the most prevalent adult spinal deformities and is often exacerbated by prior surgical destabilization; in comparison, cervical scoliotic deformities are encountered less frequently in adults and

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Arnold B. Etame, Anthony C. Wang, Khoi D. Than, Frank La Marca, and Paul Park

. Progressive cervical kyphosis can cause neurological symptoms, such as myelopathy. 8 Moreover, severe kyphotic deformities, as seen in spondylitic arthropathies, can lead to a chin-on-chest deformity with significant compromise of horizontal gaze, swallowing, and breathing. 3 , 16 Even in the absence of neurological symptoms, the pain associated with deformity contributes to functional disability. Surgical intervention remains an option for patients with progressive symptomatic cervical kyphosis in whom conservative treatment has failed. Surgery can be accomplished