European spine journal : official publication of the European Spine Society, the European Spinal Deformity Society, and the European Section of the Cervical Spine Research Society
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The anterior elements of the spine, particularly the odontoid processes, are a rare location for osteoblastomas. Pseudomalignant osteoblastomas are themselves rare histologic types and are also extremely rare in this location. Most osteoblastomas are Enneking stage 2 lesions; less frequently, they can be more aggressive with extra-capsular extension (Enneking stage 3). En bloc resection is recommended for aggressive lesions, but the literature is less clear regarding the approach to stage 2 tumors, particularly those with pseudomalignant histologic features. ⋯ This unique case of odontoid osteoblastoma illustrates that malignant behavior may not be predicted only by the presence of pseudomalignant features on histology.
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The presence of prominent OALL (ossification of anterior longitudinal ligament) in the anterior cervical spine has been implicated as a cause of dysphagia. Surgical resection of the OALL is considered effective for the management of diffuse idiopathic skeletal hyperostosis (DISH)-related dysphagia. Although many reports have been published on DISH-related dysphagia, no cases of postoperative cervical instability have been reported thus far. We present a case in which the patient developed myelopathy associated with instability consequent to resection of OALL in DISH. ⋯ Surgical resection of DISH-related dysphagia typically yields excellent outcomes, but our experience in this case highlights the possibility of OALL regrowth and subsequent cervical instability after resection of OALL.
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Ankylosing spondylitis (AS) can result in severe cervico-thoracic kyphotic deformity (CTKD). Few studies have addressed the relationship between cervico-thoracic osteotomies in AS and health-related quality of life scores. The aim of this study is to evaluate the impact of cervico-thoracic osteotomy (CTO) on improving quality of life for patients with fixed CTKD. ⋯ Cervical osteotomy for the management of fixed flexion deformity of cervical spine in ankylosing spondylitis is a safe procedure and can result in restoration of horizontal gaze and sagittal balance with significant improvement of the patient's health-related quality of life. These slides can be retrieved under Electronic Supplementary Material.
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High thoracotomy allows access to the anterior cervicothoracic and upper thoracic vertebrae; however, traditional techniques transect shoulder girdle muscles, leading to postoperative shoulder dysfunction. Muscle-sparing techniques diminish this concern, but often sacrifice the quality of exposure. We describe a novel muscle-sparing, high thoracotomy approach for the treatment of ventral cervicothoracic and upper thoracic spine lesions. ⋯ The described muscle-sparing, high thoracotomy approach provides excellent exposure of the ventral cervicothoracic and upper thoracic spine without the morbidity associated with the transection of shoulder girdle muscle bellies. This technique is particularly useful in patients with primary malignant bone tumors requiring en bloc excision and metastatic tumors with large soft tissue components.
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Case Reports
Spinal dural arteriovenous fistula (SDAVF) variant with dual perimedullary and epidural drainage.
A spinal dural arteriovenous fistula (SDAVF) is an abnormal connection between a radiculomeningeal artery and a radiculomedullary vein (RMV) characteristically draining into the perimedullary venous system. We present an observation of SDAVF draining simultaneously into the perimedullary and epidural venous systems. ⋯ Dual drainage of the right L1 SDAVF into the perimedullary and epidural venous systems allowed to locate the site of the arteriovenous shunt at the point of transdural passage of the RMV, a narrowed segment also known to represent an anti-reflux mechanism. The potential role played by the topographical relationship between the shunt and the anti-reflux mechanism of the RMV in the formation and clinical expression of SDAVFs is discussed.