利用计算机断层扫描对乌干达成年亚人群下颈椎椎弓根形态学进行研究
Pedicle Morphometry of Subaxial Cervical Spine Using Computed Tomography Scans among Adult Ugandan Subpopulation.
作者信息
Jonathan Ssebuggwawo, Muzeyi Wani, Geoffrey Erem, Gonzaga Waiswa, Badru Ssekitooleko, Isaac Kajja
机构信息
Department of Orthopaedic Surgery, School of Medicine, College of Health Sciences, Makerere University, Uganda.
Clinical Epidemiology Unit, School of Medicine, College of Health Sciences, Makerere University, Uganda.
出版信息
Int J Biomed Imaging. 2022 Mar 1;2022:6351465. doi: 10.1155/2022/6351465. eCollection 2022.
BACKGROUND
Accurate placement of pedicle screws in the subaxial cervical spine requires precise understanding of vertebra anatomy. Little is known about the morphometric characteristics of the subaxial cervical pedicle in the Ugandan population. The objective of the study was to determine the morphometric dimensions of pedicles in the subaxial cervical spine among the adult Ugandan population.
METHODS
We conducted a cross-sectional study from March to November 2019 among adult Ugandans with a normal cervical CT scan at Nsambya hospital in Kampala. Eligible participants were consecutively recruited into the study. Data on baseline characteristics and pedicle dimensions from the CT scan finding was collected using a structured questionnaire. Data was analysed using Stata 13.0. Pedicle dimensions for the different levels of subaxial cervical vertebrae were summarised as means and standard deviations, the Mann-Whitney test was used to compare pedicle dimensions for the different vertebra levels among females and males on both right and left sides, and the level of significance was set at 0.05.
RESULTS
A total of 700 subaxial cervical pedicles (C3-C7) from 49 males and 21 female participants were studied. Pedicle width diameter showed cephalocaudal gradual increment from C3 1.65(0.63) mm to 3.46(0.75) mm at C7. Pedicle height also showed an increase caudally with smallest diameter at C3 (1.98(0.76) mm) and largest at C5 in females (3.67(6.42) mm) and at C7 in males (3.83(0.76) mm). The pedicle height was wider than the pedicle width at all levels. The pedicle chord length gradually increased caudally in both sexes ranging from 29.08(1.35) mm at C3 to 32.53(3.19) mm at C7. The axial angles were oriented medially and showed no consistent trend ranging between 50° and 53°. The sagittal angles decreased as one moved from C3 to C7. The dimensions of females were significantly smaller than in males.
CONCLUSION
Pedicle endosteal width was smaller than pedicle height dimensions at all levels. Pedicle cord length increased caudally. The pedicle dimensions, except angulations, were smaller in females than in males.
背景
在颈椎下颈椎节段准确置入椎弓根螺钉需要精确了解椎体解剖结构。对于乌干达人群下颈椎椎弓根的形态测量特征知之甚少。本研究的目的是确定成年乌干达人群下颈椎节段椎弓根的形态测量尺寸。
方法
2019年3月至11月，我们在坎帕拉的Nsambya医院对颈椎CT扫描正常的成年乌干达人进行了一项横断面研究。符合条件的参与者被连续纳入研究。使用结构化问卷收集CT扫描结果中的基线特征和椎弓根尺寸数据。使用Stata 13.0进行数据分析。将不同下颈椎节段的椎弓根尺寸总结为均值和标准差，使用Mann-Whitney检验比较男女左右两侧不同椎体节段的椎弓根尺寸，显著性水平设定为0.05。
结果
共研究了49名男性和21名女性参与者的700个下颈椎椎弓根（C3-C7）。椎弓根宽度直径从C3的1.65（0.63）mm向尾侧逐渐增加至C7的3.46（0.75）mm。椎弓根高度也向尾侧增加，女性在C3处直径最小（1.98（0.76）mm），在C5处最大（3.67（6.42）mm），男性在C7处最大（3.83（0.76）mm）。在所有节段，椎弓根高度均宽于椎弓根宽度。椎弓根弦长在两性中均向尾侧逐渐增加，从C3的29.08（1.35）mm到C7的32.53（3.19）mm。轴角向内，在50°至53°之间无一致趋势。矢状角从C3到C7逐渐减小。女性的尺寸明显小于男性。
结论
在所有节段，椎弓根骨内膜宽度均小于椎弓根高度尺寸。椎弓根弦长向尾侧增加。除角度外，女性的椎弓根尺寸小于男性。
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