Carreon Leah Y, Smith Casey L, Dimar John R, Glassman Steven D
Norton Leatherman Spine Center, 210 East Gray Street, Suite 900, Louisville, KY 40202 USA.
Central States Orthopedic Specialists, William Medical Building, 6585 S. Yale Ave. Ste. 200, Tulsa, OK 74136 USA.
Scoliosis Spinal Disord. 2016 Apr 7;11:12. doi: 10.1186/s13013-016-0072-0. eCollection 2016.
Radiographic parameters to evaluate the cervical spine in adult deformity using 36-inch films have been proposed. While 36-inch films are used to evaluate spinal deformity, dedicated cervical films are more commonly used to evaluate cervical spine pathology. The purpose of this study is to determine correlations between sagittal measures from a dedicated cervical spine radiographs and 36-inch spine radiographs.
Patients who had standing cervical and 36-inch radiographs within four weeks of each other were identified. On separate occasions, the following measures were determined: C0-C2, C0-C7, C1-C2 and C2-C7 sagittal Cobb angles; T1 slope; chin-brow-vertical angle (CBVA), C1-C7 sagittal vertical axis (SVA), C2-C7SVA, center of gravity-C7 sagittal vertical axis (COG-C7SVA). Paired t-tests and correlation analyses were done between parameters from the cervical and the 36-inch film.
Radiographic measurements were collected on 40 patients (33 females and 7 males, mean age of 48.9 ± 14.5 years). All correlations were statistically significant at p < 0.001. C0-C2 Cobb had the strongest correlation (r = 0.81) and C2-C7 Cobb had the weakest (r=0.62). Among sagittal balance parameters, COG-C7SVA had the weakest correlation (r = 0.42) and C1-C7SVA (r = 0.64) and the C2-C7SVA (r = 0.65) had strong correlations. The T1 slope and the CBVA had correlation coefficients of 0.74 and 0.91, respectively. There was no statistically significant difference in measures taken from the cervical film and 36-inch film, except for the C0-C7 Cobb (p = 0.000) with a measurement difference of 7° and the T1 tilt (p = 0.000) with a measurement difference of 5°.
Except for COG-C7 SVA, strong correlations between most cervical spine parameters taken from a dedicated cervical film and those taken from a 36-inch film were seen. 36-inch radiographs provide a reasonable estimation of cervical sagittal spine parameters and may obviate the need for a dedicated cervical spine radiograph.
已提出使用36英寸X线片评估成人脊柱畸形中颈椎的影像学参数。虽然36英寸X线片用于评估脊柱畸形，但专用颈椎X线片更常用于评估颈椎病变。本研究的目的是确定专用颈椎X线片和36英寸脊柱X线片矢状面测量值之间的相关性。
确定在四周内先后进行了站立位颈椎X线片和36英寸X线片检查的患者。在不同时间分别测量以下指标：C0-C2、C0-C7、C1-C2和C2-C7矢状面Cobb角；T1倾斜角；颏眉垂直角（CBVA）、C1-C7矢状垂直轴（SVA）、C2-C7 SVA、重心-C7矢状垂直轴（COG-C7 SVA）。对颈椎X线片和36英寸X线片的参数进行配对t检验和相关性分析。
收集了40例患者（33例女性和7例男性，平均年龄48.9±14.5岁）的影像学测量数据。所有相关性在p<0.001时均具有统计学意义。C0-C2 Cobb角相关性最强（r=0.81），C2-C7 Cobb角相关性最弱（r=0.62）。在矢状面平衡参数中，COG-C7 SVA相关性最弱（r=0.42），C1-C7 SVA（r=0.64）和C2-C7 SVA（r=0.65）相关性较强。T1倾斜角和CBVA的相关系数分别为0.74和0.9
