C Bornholdt Gustavo, Siqueira Campos Lopes Bruno, Francisco Senne Paz Pedro, José Hernandez Arnaldo, Pedrinelli André
Sports Medicine Group of the Orthopedics Institute, Hospital das Clínicas da Faculdade de Medicina da Universidade de São Paulo, Sao Paulo, Brazil.
Department of Radiology, Hospital Beneficência Portuguesa, São Paulo, Brazil.
BMJ Open Sport Exerc Med. 2018 Oct 16;4(1):e000411. doi: 10.1136/bmjsem-2018-000411. eCollection 2018.
To find a radiographic method that best correlates with the mean subaxial cervical space available for the cord (MSCSAC) by using a fixed size parameter as radiographic reference, in contrast to the use of vertebral bodies as reference in the mean subaxial cervical Torg ratio (MTorg).
The study was approved by an institutional review board and written informed consent was obtained. Radiographs and cervical neck MRI were obtained from 18 male rugby athletes (age 18-30 years). Rheumatic disease, symptomatic cervical orthopaedic disease and previous cervical injury were used as exclusion criteria. MSCSAC and MTorg were calculated for each individual as the space available for the cord and Torg ratio averages from C3 to C6, respectively. A new radiographic method, using a metal bar as a size parameter (the corrected diameter of the cervical canal - CDCC), was also calculated for each individual, as well as its average from C3 to C6 (mean corrected diameter of the cervical canal - MCDCC). Values obtained for MCDCC and MTorg were correlated with those obtained by the MSCSAC using Pearson's coefficient.
Four volunteers were excluded due to previous cervical injury. In total, 14 subjects had their radiographs and MRIs analysed. Pearson's correlation between MSCSAC and MTorg was 0.5706 (p=0.033). The correlation between MSCSAC and MCDCC was 0.6903 (p=0.006).
MCDCC correlates better than MTorg with MSCSAC and may be a better radiographic option than MTorg for cervical stenosis evaluation.
寻找一种放射学方法，该方法通过使用固定大小参数作为放射学参考，与可用于脊髓的平均下颈椎间隙（MSCSAC）具有最佳相关性，这与在平均下颈椎Torg比率（MTorg）中使用椎体作为参考形成对比。
本研究经机构审查委员会批准，并获得书面知情同意书。从18名男性橄榄球运动员（年龄18 - 30岁）获取X线片和颈椎MRI。排除标准包括风湿性疾病、有症状的颈椎骨科疾病和既往颈椎损伤。分别计算每个个体的MSCSAC和MTorg，作为C3至C6节段可用于脊髓的间隙和Torg比率平均值。还为每个个体计算了一种新的放射学方法，即使用金属棒作为大小参数（颈椎管校正直径 - CDCC），以及其C3至C6节段的平均值（颈椎管平均校正直径 - MCDCC）。使用Pearson系数将MCDCC和MTorg获得的值与MSCSAC获得的值进行相关性分析。
4名志愿者因既往颈椎损伤被排除。总共对14名受试者的X线片和MRI进行了分析。MSCSAC与MTorg之间的Pearson相关性为0.5706（p = 0.033）。MSCSAC与MCDCC之间的相关性为0.6903（p = 0.006）。
MCDCC与MSCSAC的相关性优于MTorg，对于颈椎管狭窄评估，MCDCC可能是比MTorg更好的放射学选择。
