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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In vivo quantification of intervertebral motion through imaging has progressed to a point where biomarkers for low back pain are emerging. This makes possible deeper study of the condition's biometrics. However, the measurement of change over time involves error. The purpose of this prospective investigation is to determine the intrasubject repeatability of six in vivo intervertebral motion parameters using quantitative fluoroscopy. ⋯ Disc height and IV-RoM measurement using QF could be considered for randomised trials, while laxity, MSI and translation could be considered for moderators, correlates or mediators of patient-reported outcomes. MSV had both poor reliability and agreement over 6 weeks. These slides can be retrieved under Electronic Supplementary Material.
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The aim was to (1) verify our previous finding that endplates (EPs) display load-induced T2-changes, (2) investigate whether vertebrae display load-induced T2-changes and (3) investigate whether EPs and vertebrae in LBP patients and controls display T2-differences during conventional unloaded MRI and axial loaded MRI (alMRI). ⋯ This study demonstrated significantly higher EP and vertebral T2-values in LBP patients in comparison with controls. In addition, alMRI induced significant T2-changes in the superior EPs for patients but not for controls. Importantly, the T2-differences between the groups may indicate that EPs and vertebrae in LBP patients have altered biodynamical characteristics compared to controls and the higher T2-values measured in patients may represent early inflammation or impaired nutritional transport. These slides can be retrieved from electronic supplementary material.
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To conduct a high-level systematic review of the literature to evaluate intravenous and local steroid use in the management of dysphagia after anterior cervical spine surgery. ⋯ Perioperative intravenous and local steroid use could reduce incidence and severity of early dysphagia after ACSS postoperatively, especially for multilevel surgeries. For the patients underwent revision surgery or at high risk for pseudarthrosis having to use BMP during surgery, locally administered depomedrol on a collagen sponge was suggested to decrease early dysphagia incidence and severity after ACSS. These slides can be retrieved under Electronic Supplementary Material.
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The purpose of this article is to report a successful treatment experience in a rare case of simultaneous cervical nerve root compression by spondylotic cervical foraminal stenosis and a vertebral artery loop. ⋯ This report illustrates the first phenomenon of a double crush syndrome caused by vertebral artery loop and cervical spondylotic changes. When patients with cervical spondylosis present with unexplainably severe pain and weakness, additional underlying pathologies should be considered when making differential diagnoses. The investigation planning should involve electromyography, computed tomography angiography, and magnetic resonance imaging.
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Review
Evaluation of bony fusion after anterior cervical discectomy: a systematic literature review.
Anterior cervical discectomy and fusion (ACDF) has proven effective in treating radicular arm pain. Post-operatively, cervical spine stability is temporarily challenged, but data on bony fusion and speed of fusion are ambiguous; optimum evaluation method and criteria are debated. ⋯ In approximately 90% of patients, bony fusion is accomplished one year after ACDF. As there is no generally accepted definition of bony fusion, different measuring techniques cannot be compared to a gold standard and it is impossible to determine the most accurate method. Variations in study design hamper conclusions on optimising the rate of bony fusion by choice of material and/or additives. Insufficient attention is paid to correlation between bony fusion and clinical outcome. These slides can be retrieved from electronic supplementary material.