Slowly progressive hemiparesis

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• 作者：Erle C.H. Lim ; Chong-Han Pek ; Raymond C.S. Seet
• 关键词：Osteoporosis ; Vertebral compression fracture ; Kyphotic angle ; Modified Cobb method ; Harrison posterior tangential method ; Centroid method
• 刊名：Journal of Clinical Neuroscience
• 出版年：2007
• 出版时间：October 2007
• 年：2007
• 卷：14
• 期：10
• 页码：966-967
• 全文大小：552 K

文摘

A reliable and reproducible measurement technique for the sagittal contour in vertebral fractures is paramount to clinical decision-making. This study was designed to determine the most reliable measurement technique in osteoporotic vertebral compression fracture. Fifteen lateral radiographs of thoracic and lumbar fractures were selected and measured on two separate occasions by three spine surgeons using six different measurement techniques (centroid, Harrison posterior tangent method and 4 different types of modified Cobb method). The radiograph quality was assessed and the center beam location was determined. The inter- and intraobserver variance of the Cobb method 4 and the Harrison posterior tangent method were significantly lower than for the other four methods. The intraobserver correlation coefficients were the most consistent using the Cobb method 4 (0.982), followed by the Harrison posterior tangent method (0.953) and Cobb method 1 (0.874). The intraobserver agreement ( % of repeated measures within 5° of the original measurement) ranged from 42 % to 98 % for each technique for all three observers, with the Cobb method 4 showing the best agreement (97.8 % ) followed by the Harrison posterior tangent method (93.7 % ). The Cobb method 4 and Harrison posterior tangent method, when applied to measuring the kyphosis, were reliable and had a similar small error range. The Cobb method 4 showed the best overall reliability. The centroid method and the other Cobb methods using a fractured endplate did not produce an accurate result due to inter- and intraobserver differences in determining the baseline.