Lakchayapakorn Kajorn, Suwanlikhid Nadthaganya
J Med Assoc Thai. 2014 Aug;97 Suppl 8:S1-6.
Data on the L3/4 andL4/5 interspinous distances are important in performing a lumbar puncture. This has not been studied in Thais.
To study the interlaminar and the narrowest distances at theL3/4 and L4/5 interspinous spaces and location ofthe intercrestal line in Thai cadavers.
The interlaminar and the narrowest distances at the L3/4 and L4/5 interspinous spaces and location of the intercrestal line were measured in 87 cadavers. Mean age of cadavers was 66.7±10.6 years (range 40-80 years). Measurements were statistically analyzed using unpaired t-tests.
The intercrestal line most often intersected at the lower halfofthe L4spinousprocess (32/87, 36.8%), rangingfrom the lower half ofL3 spinous process to the upper half of Si. Mean interlaminar and the narrowest distances at the L3/4 interspinous space were not significantly different from the L4/5 interspinous space: 7.32±2.7 mm vs. 7.05±3.0 mm and 5.27±2.1 mm vs. 5.38±2.4 mm, respectively (p> 0. 05). These interspinous process distances in 71-80year old cadavers were significantly shorter than 40-60 and 61-70 year age groups (p<0.05).
The present study confirms that the intercrestal line is most commonly at the lower half of the L4 spinous process. Mean interlaminar and the narrowest distances at the L3/4 and L4/5 interspinous spaces were unrelated to gender or body type. The elderly had more narrow interspinous process distances which may be benefitfrom having lumbar puncture done in the sitting andfeet supported position.
L3/4和L4/5棘突间距离的数据对于进行腰椎穿刺很重要。泰国人尚未对此进行研究。
研究泰国尸体L3/4和L4/5棘突间间隙的层间和最窄距离以及髂嵴间线的位置。
在87具尸体上测量L3/4和L4/5棘突间间隙的层间和最窄距离以及髂嵴间线的位置。尸体的平均年龄为66.7±10.6岁（范围40 - 80岁）。测量数据采用非配对t检验进行统计学分析。
髂嵴间线最常与L4棘突下半部相交（32/87，36.8%），范围从L3棘突下半部到S1上半部。L3/4棘突间间隙的平均层间和最窄距离与L4/5棘突间间隙无显著差异：分别为7.32±2.7mm和7.05±3.0mm，以及5.27±2.1mm和5.38±2.4mm（p>0.05）。71 - 80岁尸体的这些棘突间距离明显短于40 - 60岁和61 - 70岁年龄组（p<0.05）。
本研究证实髂嵴间线最常见于L4棘突下半部。L3/4和L4/5棘突间间隙的平均层间和最窄距离与性别或体型无关。老年人的棘突间距离更窄，这可能有利于在坐位且双脚支撑的体位下进行腰椎穿刺。
