Kunas Grace C, Probasco William, Haleem Amgad M, Burket Jayme C, Williamson Emilie R C, Ellis Scott J
Department of Foot and Ankle Surgery, Hospital for Special Surgery, 535 East 70th Street, New York, NY, 10021 USA.
Department of Orthopedic Surgery, Oklahoma University Health Sciences Center, 920 Stanton L Young Blvd., Williams Pavilion 1380, Oklahoma City, OK, 73104 USA.
Foot Ankle Surg. 2018 Dec;24(6):495-500. doi: 10.1016/j.fas.2017.05.010. Epub 2017 Jun 12.
The aim of this study was to assess the inferior talus-superior talus (inf-tal-sup-tal) angle (previously proven reliable in multiplanar-weight bearing imaging (MP-WB)) on both computed tomography (CT) and MP-WB scans. We sought to compare the angle between the two modalities in both AAFD and control groups, as well as to compare the groups to each other.
Inf-tal-sup-tal angles were compared between a stage II AAFD group (n=38) with routine MP-WB and CT scans and a control group (n=20) with preoperative CT scans for lisfranc injuries and normal hindfoot alignment after healing.
The CT inf-tal-sup-tal angle was significantly greater in AAFD compared to control (AAFD, 12±6; control, 5±4; p<0.001), but was even greater with MP-WB. There was no significant correlation between inf-tal-sup-tal angles on MP-WB and CT (Pearson's=0.29, p=0.08).
MP-WB imaging proved to be correlated more strongly with AAFD than CT by revealing greater hindfoot valgus. This confirmed that CT scans are useful in predicting AAFD, but cannot be used as a surrogate for MP-WB scans.
本研究的目的是在计算机断层扫描（CT）和多平面负重成像（MP-WB）扫描上评估距骨下-距骨上（inf-tal-sup-tal）角（先前已证实在多平面负重成像中可靠）。我们试图比较重度扁平足畸形（AAFD）组和对照组在两种检查方式下的该角度，以及比较两组之间的差异。
比较II期AAFD组（n = 38，进行常规MP-WB和CT扫描）和对照组（n = 20，对跖跗关节损伤进行术前CT扫描，愈合后后足排列正常）的inf-tal-sup-tal角。
与对照组相比，AAFD组的CT inf-tal-sup-tal角显著更大（AAFD组为12±6；对照组为5±4；p<0.001），但MP-WB检查时该角度更大。MP-WB和CT上的inf-tal-sup-tal角之间无显著相关性（Pearson相关系数=0.29，p = 0.08）。
通过显示更大的后足外翻，MP-WB成像被证明与AAFD的相关性比CT更强。这证实CT扫描在预测AAFD方面有用，但不能用作MP-WB扫描的替代方法。
