Masharawi Youssef M, Kjaer Per, Bendix Tom, Manniche Claus, May Hila, Mirovsky Yigal, Anekshtein Yoram, Jensen Tue S, Hershkovitz Israel
Spinal Research Laboratory, Department of Physical Therapy, The Stanley Steyer School of Health Professions, Tel Aviv University, Tel Aviv, Israel.
Spine (Phila Pa 1976). 2009 Feb 15;34(4):408-12. doi: 10.1097/BRS.0b013e3181971b6a.
A descriptive magnetic resonance imaging (MRI) study on the growth of the lumbar zygapophyseal facets and interfacet area in children from the general population.
To characterize lumbar facet and interfacet shape variation during growth.
The growth of the lumbar facet and interfacet area in children from the general population has rarely been discussed in the literature. This is an important caveat considering the important role these structures play in the development of spinal anomalies.
All lumbar (L1-S1) facet and interfacet widths and transverse orientations were measured twice by the same investigator (Y.M.) from T2-weighted MRIs of 100 healthy children (51 boys and 49 girls) from the general population at the mean age of 12 to 13 years (t0) and after 3 years at the mean age of 15 to 16 years (t1) using the iQ-VIEW system. Statistical analysis included Student t tests and Pearson r after the Kolmogorov-Smirnov test for normal distribution. RESULTS.: The superior facet width is correlated with individual's height only in boys at t0 (0.56 < or = r < or = 0.66). No significant asymmetry in lumbar facet width and orientation is seen in children independent of gender both at t0 and t1. Lumbar facets have widened significantly only in boys from t0 to t1 (up to 30.8%). Girls at t1 manifest greater superior interfacet width relatively to the superior vertebral body width than boys at L2-L4. No significant difference is indicated in facet orientation of the 2 sexes at t0 and t1. In boys only, the superior facet rotates significantly from t0 to t1 (up to-10 degrees in the interfacet angle) toward a more sagittal orientation.
The lumbar facet joints in boys continue to develop after the age of 12, whereas facets in girls seem to have reached maturity at that age. Moreover, lumbar facet asymmetry when noted in children can be considered as a deviation from the normal state. Further research should look into what the consequences might be.
一项关于普通人群中儿童腰椎关节突关节面及关节间隙区域生长情况的描述性磁共振成像（MRI）研究。
描述生长过程中腰椎关节突关节面及关节间隙形状的变化。
普通人群中儿童腰椎关节突关节面及关节间隙区域的生长情况在文献中鲜有讨论。鉴于这些结构在脊柱异常发育中所起的重要作用，这是一个重要的注意事项。
同一位研究者（Y.M.）对100名普通人群中平均年龄为12至13岁（t0）的健康儿童（51名男孩和49名女孩）的T2加权MRI图像进行两次测量，测量所有腰椎（L1 - S1）关节突关节面及关节间隙的宽度和横向方向，3年后，当平均年龄为15至16岁（t1）时再次测量。使用iQ - VIEW系统进行测量。统计分析包括在进行Kolmogorov - Smirnov正态分布检验后进行的Student t检验和Pearson相关系数r分析。结果：仅在t0时，男孩的上关节突宽度与个体身高相关（0.56≤r≤0.66）。在t0和t1时，无论性别，儿童的腰椎关节突宽度和方向均无明显不对称。仅在男孩中，从t0到t1腰椎关节突显著增宽（增幅高达30.8%）。在L2 - L4水平，t1时女孩的上关节间隙宽度相对于上位椎体宽度比男孩更大。在t0和t1时，两性的关节突方向无显著差异。仅在男孩中，从t0到t1上关节突显著旋转（关节间隙角度最大可达 - 10度），朝更矢状位方向发展。
男孩的腰椎关节突关节在12岁后仍继续发育，而女孩的关节突在该年龄似乎已达到成熟。此外，儿童中出现的腰椎关节突不对称可被视为偏离正常状态。进一步的研究应探讨其可能产生的后果。
