Spine
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A cadaveric specimen study. ⋯ A large percentages of C2 laminae are of sufficient size to safely accommodate a bicortical 3.5-mm diameter screw. The thickness of the lamina and the height of the spinous process are the 2 limiting factors for safe translaminar screws placement. Using a bicortical technique confirms the position of the screw and thereby helps to decrease the risk of neurologic injury from screw penetration of the inner cortex of the lamina.
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Validation study. ⋯ Computerized touch-screen questionnaires virtually eliminates missing values and show good validity and reliability compared to paper forms. The SF-36 tended to produce slightly higher values on touch-screen recordings in questions concerning mental health.
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A prospective cross-sectional study. ⋯ Living environment may influence the assessment results of the postoperative quality of life in AIS patients. The effects of environment (i.e., rural vs. urban) should be considered when using the SRS-22 scale to evaluate the quality of life of the patients.
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A retrospective study. ⋯ Maintaining postoperative L4-L5 segmental lordotic angle at about 20° or more is important for prevention of clinical ASD in single-level 360° fusion operation. MRI is reliable method for diagnosing clinical ASD.
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Retrospective review of clinical cases. ⋯ No correlation was found between RF values and greater risk of recurrent infection. Removal of implants is unnecessary in acute infections, provided the infection does not return. CSIS is an effective method for treatment of postoperative wound infections following instrumented spinal fusion avoiding the need for secondary closure.