Mughir Abdullah Mohammed Abdo, Yusof Mohd Imran, Abdullah Shafie, Ahmad Shahrulazua
Department of Radiology, School of Medical Science, Universiti Sains Malaysia (USM), Jalan Raja Perempuan Zainab 2, 16150, Kubang Kerian, Kelantan, Malaysia.
Surg Radiol Anat. 2010 Jul;32(6):587-92. doi: 10.1007/s00276-009-0612-x. Epub 2010 Jan 3.
To study the morphological difference between the lumbar pedicle in adolescent and adult groups as only less information is known about their pedicle morphology, especially in Malaysian population.
The pedicle parameters of the lumbar spine in adolescent and adult groups including transverse outer pedicle diameter, transverse inner pedicle diameters, medial wall cortical thickness, lateral wall cortical thickness, pedicle length, transverse pedicle angle and sagittal pedicle angle were measured using computerised tomography (CT) scanning. The measurements in both groups were compared and analysed using statistical method.
In adolescent group, the mean transverse outer diameter was 8.9 +/- 1.2 mm, transverse inner diameter was 6.3 +/- 1.2 mm, medial cortical thickness was 1.6 +/- 1.2 mm, lateral cortical thickness was 1.3 +/- 1.2 mm, pedicle length was 41.7 +/- 3.8 mm, transverse angle was 20.0 +/- 2.5 degrees and sagittal angle was 16.0 +/- 1.7 degrees . In adult group, the mean transverse outer diameter was 9.8 +/- 1.3 mm, transverse inner diameter was 7.0 +/- 1.2 mm, medial cortical thickness was 1.7 +/- 1.2 mm, lateral cortical thickness was 1.4 +/- 1.6 mm, pedicle length was 44.8 +/- 5.0 mm, transverse angle was 21.7 +/- 2.3 degrees and sagittal angle was 17.4 +/- 1.7 degrees . Comparing the mean of the two age groups, all the measurements were significantly smaller (p < 0.05) in the adolescent patients.
Pedicle morphology in adolescent and adult population is different in all parameters, especially in males. Understanding of specific pedicle morphology for each group is imperative for safety in spinal procedures using pedicle route.
由于目前对于青少年和成人腰椎椎弓根形态的了解较少，尤其是马来西亚人群，因此本研究旨在探讨这两个群体之间的形态差异。
使用计算机断层扫描（CT）测量青少年和成人组腰椎椎弓根的参数，包括椎弓根外侧横径、椎弓根内侧横径、内侧壁皮质厚度、外侧壁皮质厚度、椎弓根长度、椎弓根横角和椎弓根矢状角。采用统计学方法对两组测量结果进行比较和分析。
青少年组的平均外侧横径为8.9±1.2mm，内侧横径为6.3±1.2mm，内侧皮质厚度为1.6±1.2mm，外侧皮质厚度为1.3±1.2mm，椎弓根长度为41.7±3.8mm，横角为20.0±2.5°，矢状角为16.0±1.7°。成人组的平均外侧横径为9.8±1.3mm，内侧横径为7.0±1.2mm，内侧皮质厚度为1.7±1.2mm，外侧皮质厚度为1.4±1.6mm，椎弓根长度为44.8±5.0mm，横角为21.7±2.3°，矢状角为17.4±1.7°。比较两个年龄组的平均值，青少年患者的所有测量值均显著较小（p<0.05）。
青少年和成人人群的椎弓根形态在所有参数上均存在差异，尤其是男性。了解每组特定的椎弓根形态对于采用椎弓根入路的脊柱手术安全至关重要。
