Spinal Research Laboratory, Department of Physiotherapy, Stanley Steyer School of Health Professions, Sackler Faculty of Medicine, Tel Aviv University, Ramat-Aviv, Israel.
Spine (Phila Pa 1976). 2012 Mar 15;37(6):501-7. doi: 10.1097/BRS.0b013e3182241b04.
A longitudinal descriptive magnetic resonance imaging study on the changes of the supine lumbar lordosis (SLL), supine sacral slope (SSS), and sagittal wedging of the vertebral body (VB) and intervertebral discs (IVD) in children from the general population.
To compare the shape variation during growth of the SLL, SSS, and sagittal wedging of the VB and IVD in boys and girls.
The normal shape variation of the VB, IVD, SLL, and SSS during growth vis-à-vis sex in children from the general population is poorly clarified in the literature as it is usually reported in relation to pathological conditions.
The SLL, SSS, and sagittal wedging of all lumbar (L1-S1) VBs and IVDs were measured twice from T2-weighted magnetic resonance images of 100 healthy children (51 boys and 49 girls), at mean age 12 to 13 years (t0) and after approximately 3 years (t1) using the iQ-VIEW system (IMAGE Information Systems Ltd., Plauen, Germany). Data for body compositions and pubertal status were collected, and their correlations were analyzed.
At baseline (t0), most lumbar VBs were significantly more lordotic in boys (17.1º) than in girls (22.2º); however, girls manifested greater SLL and SSS (45.2º and 33.6º, respectively) than boys (40.7º and 31.4º, respectively), and all IVDs were lordotic, with only the L5-S1 IVD differing between sexes, being more lordotic in girls than in boys (mean difference = 2.8º). At follow-up (t1), SSS became greater in boys (35.7º) than in girls (32.5º), yet all other parameters became independent of sex including all IVDs (except L5-S1) becoming significantly more lordotic, and more so in boys than in girls (total lumbar mean differences being 9.0º and 3.8º, respectively). Increase in boys' heights was correlated with the increase in the L2-L4 lordotic IVD wedging (r = 0.45). Positive correlations were indicated between puberty Tanner stage and individual's height and weight (0.41 < r < 0.45).
Lumbar VBs decreased their lordotic wedging process during growth, whereas the opposite was observed with the IVDs and SLL, which increased in boys and decreased in girls, becoming independent of sex. The SSS, however, manifested the same process of shape variation, becoming greater in boys than in girls.
一项针对普通人群中仰卧腰椎前凸（SLL）、仰卧骶骨倾斜度（SSS）、椎体（VB）和椎间盘（IVD）矢状楔变的纵向描述性磁共振成像研究。
比较男孩和女孩在生长过程中 SLL、SSS 和 VB 及 IVD 矢状楔变的形状变化。
由于文献中通常是在与病理状况相关的情况下报告，因此，普通人群中儿童 VB、IVD、SLL 和 SSS 在生长过程中的正常形状变化及其性别差异尚不清楚。
使用 iQ-VIEW 系统（IMAGE Information Systems Ltd.，德国普劳恩），在 100 名健康儿童（51 名男孩和 49 名女孩）的 T2 加权磁共振图像上，两次测量所有腰椎（L1-S1）VB 和 IVD 的 SLL、SSS 和矢状楔变，平均年龄为 12 至 13 岁（t0）和大约 3 年后（t1）。收集了身体成分和青春期状态的数据，并对其相关性进行了分析。
在基线（t0）时，大多数腰椎 VB 在男孩中明显更前凸（17.1°），而在女孩中更前凸（22.2°）；然而，女孩的 SLL 和 SSS 更大（分别为 45.2°和 33.6°），而男孩的 SLL 和 SSS 更小（分别为 40.7°和 31.4°），所有 IVD 均为前凸，仅 L5-S1 IVD 在性别间存在差异，在女孩中比男孩更前凸（平均差异=2.8°）。在随访（t1）时，男孩的 SSS 比女孩更大（35.7°），而所有其他参数均与性别无关，包括所有 IVD（除 L5-S1 外）均变得更加前凸，男孩比女孩更为明显（总腰椎平均差异分别为 9.0°和 3.8°）。男孩身高的增加与 L2-L4 前凸 IVD 楔变的增加呈正相关（r=0.45）。青春期 Tanner 阶段与个人身高和体重呈正相关（0.41<r<0.45）。
在生长过程中，腰椎 VB 的前凸楔变减少，而 IVD 和 SLL 的前凸楔变增加，男孩增加，女孩减少，且不受性别影响。然而，SSS 表现出相同的形状变化过程，在男孩中比在女孩中更大。
