Modified hindfoot alignment radiological evaluation and application in the assessment of flatfoot

作者：Jingqi Liang, Yan Zhang, Liang Liu, Xiaodong Wen, Pei-Long Liu, Xin-Quan Yang, Xiaojun Liang, Hongmou Zhao · 发表于：BMC Musculoskeletal Disorders · 年份：2023 · DOI：10.1186/s12891-023-06824-w · 被引用次数：4 · 研究领域：Foot and Ankle Surgery、Lower Extremity Biomechanics and Pathologies、Bone fractures and treatments

BACKGROUND: Alignment is indispensable for the foot and ankle function, especially in the hindfoot alignment. In the preoperative planning of patients with varus or valgus deformity, the precise measurement of the hindfoot alignment is important. A new method of photographing and measuring hindfoot alignment based on X-ray was proposed in this study, and it was applied in the assessment of flatfoot. METHODS: This study included 28 patients (40 feet) with flatfeet and 20 volunteers (40 feet) from January to December 2018. The hindfoot alignment shooting stand independently designed by our department was used to take hindfoot alignment X-rays at 10 degree, 15 degree, 20 degree, 25 degree, and 30 degree. We measured the modified tibio-hindfoot angle (THA) at the standard hindfoot aligment position (shooting at 20 degree) and evaluated consistency with the van Dijk method and the modified van Dijk method. In addition, we observed the visibility of the tibiotalar joint space from all imaging data at five projection angles and evaluated the consistency of the modified THA method at different projection angles. The angle of hindfoot valgus of flatfoot patients was measured using the modified THA method. RESULTS: The mean THA in the standard hindfoot aligment view in normal people was significantly different among the three evaluation methods (P < .001). The results from the modified THA method were significantly larger than those from the Van Dijk method (P < .001) and modified Van ...