Spine
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A retrospective cohort study. ⋯ Anderson and Montessano types I, II, and III OCFs may be treated nonoperatively in the absence of ligamentous instability and concomitant cervical injuries with the expectation of mild neck disability regardless of the displacement, bilaterality, sex, or presence of head injury. Greater disability may be expected in patients aged between 40 and 60 years than in other ages.
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Comparative Study
Upper instrumented vertebral fractures in long lumbar fusions: what are the associated risk factors?
A retrospective comparative study. ⋯ Our series of long lumbar fusions had a high long-term complication and revision rate. A high UIV angle on intraoperative lateral radiograph was strongly associated with UIV fractures. UIVs of L1 or L2 had a higher rate of adjacent segment or UIV failure.
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A retrospective case series. ⋯ This is the largest reported series of patients with spinal tumor disease undergoing circumferential decompression and 3-column instrumented stabilization through the posterior transpedicular approach.This surgical approach provides sufficient access for safe and effective circumferential decompression and stabilization, with reduced complications compared with costotransversectomy or combined anterior transcavitary and posterior approaches.
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A morphologic study of manubrium sterni using 3-dimensional computed tomography (3D-CT). ⋯ The size of male manubrium is significantly larger than that of female manubrium. Manubrium bone is far more sufficient for most adult anterior cervical fusion surgeries. Safe area for procurement of graft is defined as the upper two-thirds of manubrium, and the optimal site to access medullar cavity is suggested at bare area. However, because considerable variability of manubrium size exists, preoperative evaluation of manubrium is suggested to avoid pitfalls, especially when manubrium graft is intended in a female patient.
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An in vitro investigation of the biomechanics of the intact and destabilized sheep cervical spine. ⋯ The sheep cervical spine is extremely flexible, as seen by the large range of motion and neutral zone. The large neutral zone may account for the coupled motion between axial rotation and lateral bending. The facets and capsular ligaments provide significant stability, especially in axial rotation, flexion, and extension.