Spine
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A retrospective cohort study. ⋯ 2.
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We investigate on the surgical reliability of nasal palatine line for the transnasal approach and introduce a conceptually analogue radiological line as a reliable predictor of the maximal superior extension of the transoral approach. We have also compared radiological and surgical lines to find possible radiological references points to predict preoperatively the maximal extent of superior dissection for the transoral approach. ⋯ 3.
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Medical textbooks present the pelvis and the spine as distinct entities-an unfortunate practice that does not reflect the crucial and critical role that the pelvis plays in regulating spino-pelvic alignment. Researchers are working to delineate this role. ⋯ To quantify pelvic morphology, Legaye introduced the pelvic incidence angle (PI) and espoused the theory that this angle regulates sagittal curvature of the spine. The PI is formed from 2 lines: line 1, perpendicular to the sacrum from the midline of the sacral plate, aims to quantify spatial orientation and dictate the lumbar curve; line 2, extending from the midline of the sacrum to the midpoint between femoral heads, illustrates the importance of sacral position inside the pelvis (SDC Figure 1, http://links.lww.com/BRS/B99).
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The Uppsala Cryoplaning Technique has been used for over 30 years to study normal spinal anatomy and pathologies such as trauma, degenerative conditions, tumors, and metastases (SDC Figure 1, http://links.lww.com/BRS/B105). A heavy-duty sledge cryomicrotome creates authentic anatomical images of slices from the surface of in situ fresh-frozen specimens at submillimeter intervals. This presentation is intended to improve understanding of anatomical structures of the spine among spine surgeons.