Spine
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Cadaver dissection. ⋯ Several points might be listed as potential sites of entrapment along the course of the posterior ramus of the thoracic nerve and its branches, leading to the cause of thoracic back pain. In addition, the articular branch entering the facet (zygapophyseal) joint originated from the descending branch, which was the first branch of the posterior ramus.
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Psychometric testing of the Persian Functional Rating Index (PFRI). ⋯ The PFRI is valid and reliable for use in a Persian-speaking population with NP.
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A case report. ⋯ TB should always be considered as a differential diagnosis of sacral lesions, and identifying multidrug resistance is equally important in its treatment. Lumbopelvic fixation is a safe and reliable option as it unloads the S1 segment by achieving fixation in the lumbosacral spine and iliac wings.
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Ex vivo study of the mechanical performance of cylindrical and dual-core pedicle screws after insertion, removal, and reinsertion in the same hole. ⋯ Insertions and reinsertion of either cylindrical or dual-core pedicle screws have compromised insertion torque and pullout strength of the implants as measured by mechanical tests.
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A retrospective review. ⋯ The use of wider intervertebral cages leads to a significantly lower rate of subsidence, but a longer cage does not necessarily offer a similar advantage. Wide cages are protective against subsidence, and the widest cages should be used whenever feasible for interbody fusion in the lumbar spine to protect indirect compression and promote arthrodesis.