Spine
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Case Reports
Microradiographic and histopathologic findings in a human cage explant after two-level corpectomy: a case report.
A case involving microradiographic and histopathologic analysis of an explanted human corpectomy mesh cage is reported. ⋯ This study involved one titanium mesh device (Harms cage), 20 mm in diameter and 45 mm long, explanted from a two-level corpectomy clinical case. This device was retrieved, processed, and analyzed after informed patient consent and approval from the authors' institutional review board.
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In vivo strain techniques were used in an animal radiculopathy model. ⋯ For the first time, in vivo biomechanical analysis of tissue deformations was used to investigate the role of mechanics in radicular pain. Overall mechanical allodynia was greater for more severe nerve root injuries (greater strains) in an animal model, suggesting that mechanical deformation plays an important role in the pain mechanism. Continued work is underway to understand the complex interplay between mechanics and the physiology of radicular pain.
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Animal model study of three healthy commercial pigs was conducted. ⋯ This near infrared spectroscopy technique monitors changes in oxygenation of the spinal cord, and therefore appears capable of intraoperative warning about impending vascular compromise of the spinal cord.
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A useful modification of the Kerrison rongeur is reported. ⋯ The design of the chip collector fully met the expectations for the modification: no clogging of resected bone material, easy clinical use, and shorter operating times. The modified rongeur, available in two lengths (190 and 290 mm) and three sizes of the chip collector (diameter of 4, 6, and 8 mm) proved to be useful in clinical applications.