The Value of Axial Loading 3D CT as a Substitute for Full Weightbearing 3D CT: Comparison of Reproducibility According to Degree of Load

Foot & Ankle Orthopaedics

ChanKang¹ 

关键词: Foot;    Ankle;    St;    ing radiography;    Weightbearing CT;    Axial loading CT;   

DOI  :  10.1177/2473011418S00279

学科分类：医学（综合）

来源: Sage Journals

【 摘 要 】

Category:OtherIntroduction/Purpose:Full weightbearing(WB) three dimensional computed tomography(3D CT) is an excellent imaging tool. However, due to its high cost, it is only used in a few hospitals. We evaluated the usefulness and cost-effectiveness of axial loading(AL) 3D CT by comparing bony alignments with standing radiographs, and assessed reproducibility according to the degree of AL.Methods:Eighty patients(156 feet), who underwent standing radiographs and 3D CT with an AL device from January 2016 to May 2017, were investigated. According to the degree of AL(AL force×100/body weight), the patients were randomly assigned to three groups: Group A(30-50%; n=21, 40 feet), Group B(50-70%; n=32, 63 feet), and Group C(70-100%; n=27, 53 feet). The following angles were measured three times by two orthopedists: hallux valgus(HVA), 1st-2nd intermetatarsal(IMA1-2), and talo-navicular coverage(TNCA), calcaneal pitch(CPA), talo-1st metatarsal(T1MA), and talo-calcaneal angle(TCA). Agreements between the two imagi...

【 授权许可】

CC BY