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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To evaluate postoperative recurrence, survival and metastasis results and related factors of sacral chordoma. ⋯ Sacral chordoma tended to occur in elderly male patients and locate below sacral 3 level. The recurrence rate was high, especially for tumor above sacral 3 level. Wide surgical margin is very important for good local control. The patients with metastasis had poor prognosis.
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To answer two questions: (1) what are the common complications associated with surgery for thoracic myelopathy caused by ossification of the posterior longitudinal ligament, and (2) which surgical approach is safer with regard to the incidence of post-operative complications. ⋯ Cerebrospinal fluid leakage and neurologic deficit were the two most common complications following surgical decompression of the thoracic spine with ossification of the posterior longitudinal ligament. Patients undergoing indirect decompression surgeries had significantly lower complication rates compared with those undergoing direct decompression surgeries.
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The cervical segmental instability often occurs simultaneously with Modic changes (MCs). However, it is unknown whether there is a relation between the two diseases. The aim of this study was to evaluate the relationship between MCs and cervical segmental instability, cervical curvature and range of motion (ROM) in the cervical spine. ⋯ Patients with MCs were prone to have cervical instability at the same cervical level and may have a higher possibility of less cervical curvature and ROM.
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Case Reports
One-step reconstruction with a 3D-printed, custom-made prosthesis after total en bloc sacrectomy: a technical note.
Surgeries for primary malignancies involving upper sacrum require total en bloc sacrectomy followed by complex mechanical reconstruction, which might be simplified by application of the three-dimensional (3D) printing technique. ⋯ The advantages of our reconstruction method included: (1) the prosthesis provided an optimal reconstruction of lumbosacral and pelvic ring by integrating spinal pelvic fixation, posterior pelvic ring fixation, and anterior spinal column fixation in one step and (2) its porous surface could induce bone ingrowth and might enhance stability. Although there was an instrumental failure, we considered that it could be one reconstructive option. More research is warranted focusing on the modification of locations, diameters, and quantity of screws and biomechanical characteristics. The long-term functional and bone in-growth outcome will be followed to validate the use of the prosthesis.