Lee Chong Suh, Chung Sung Soo, Park Se Jun, Kim Dong Min, Shin Seong Kee
Department of Orthopaedic Surgery, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea.
Eur Spine J. 2014 Jan;23(1):192-7. doi: 10.1007/s00586-013-2895-1. Epub 2013 Jul 30.
This study aimed at deriving a lordosis predictive equation using the pelvic incidence and to establish a simple prediction method of lumbar lordosis for planning lumbar corrective surgery in Asians.
Eighty-six asymptomatic volunteers were enrolled in the study. The maximal lumbar lordosis (MLL), lower lumbar lordosis (LLL), pelvic incidence (PI), and sacral slope (SS) were measured. The correlations between the parameters were analyzed using Pearson correlation analysis. Predictive equations of lumbar lordosis through simple regression analysis of the parameters and simple predictive values of lumbar lordosis using PI were derived.
The PI strongly correlated with the SS (r = 0.78), and a strong correlation was found between the SS and LLL (r = 0.89), and between the SS and MLL (r = 0.83). Based on these correlations, the predictive equations of lumbar lordosis were found (SS = 0.80 + 0.74 PI (r = 0.78, R (2) = 0.61), LLL = 5.20 + 0.87 SS (r = 0.89, R (2) = 0.80), MLL = 17.41 + 0.96 SS (r = 0.83, R (2) = 0.68). When PI was between 30° to 35°, 40° to 50° and 55° to 60°, the equations predicted that MLL would be PI + 10°, PI + 5° and PI, and LLL would be PI - 5°, PI - 10° and PI - 15°, respectively.
This simple calculation method can provide a more appropriate and simpler prediction of lumbar lordosis for Asian populations. The prediction of lumbar lordosis should be used as a reference for surgeons planning to restore the lumbar lordosis in lumbar corrective surgery.
本研究旨在利用骨盆入射角推导腰椎前凸预测方程，并建立一种简单的腰椎前凸预测方法，用于亚洲人腰椎矫正手术的规划。
86名无症状志愿者参与了本研究。测量了最大腰椎前凸（MLL）、下腰椎前凸（LLL）、骨盆入射角（PI）和骶骨倾斜角（SS）。使用Pearson相关分析对各参数之间的相关性进行分析。通过对参数进行简单回归分析得出腰椎前凸的预测方程，并得出使用PI的腰椎前凸简单预测值。
PI与SS高度相关（r = 0.78），SS与LLL之间高度相关（r = 0.89），SS与MLL之间高度相关（r = 0.83）。基于这些相关性，得出了腰椎前凸的预测方程（SS = 0.80 + 0.74PI（r = 0.78，R（2）= 0.61），LLL = 5.20 + 0.87SS（r = 0.89，R（2）= 0.80），MLL = 17.41 + 0.96SS（r = 0.83，R（2）= 0.68）。当PI在30°至35°、40°至50°和55°至60°之间时，方程预测MLL分别为PI + 10°、PI + 5°和PI，LLL分别为PI - 5°、PI - 10°和PI - 15°。
这种简单的计算方法可以为亚洲人群提供更合适、更简单的腰椎前凸预测。腰椎前凸的预测应用作计划在腰椎矫正手术中恢复腰椎前凸的外科医生的参考。
