Abstract
Few intraoperative assessments are available for hindfoot alignment. In the current study, we demonstrated the feasibility of hindfoot alignment via intraoperative fluoroscopy. We retrospectively compared measurements of heel alignment obtained via intraoperative fluoroscopy with those acquired using standard radiographs. Two observers compared the heel alignment ratios and angles derived from 100 pairs of images. The effects of age, sex, laterality, and body mass index on the discrepancy between fluoroscopic images and radiographs were analyzed. The heel alignment ratio revealed a strong correlation between standing radiograph and intraoperative fluoroscopy, based on a correlation coefficient of 0.844 (p < .001). The heel alignment angle also showed significant correlation based on a correlation coefficient value of 0.667 (p < .001). None of the demographic factors showed any significant effect on the discrepancy between the 2 sets of images. Our study showed that the heel alignment determined via intraoperative fluoroscopy was comparable to that of a standard standing radiograph without any significant association with demographic factors.
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