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Simulated Weightbearing Fluoroscopy to Assess Intraoperative Hindfoot Alignment
Ying Li1, Wenjing Li1, Ning Sun1
1Department of Foot and Ankle Surgery, Beijing Jishuitan Hospital, the Fourth Clinical Medical College of Peking University, Beijing, China.
Foot & Ankle International
|March 24, 2023
Summary
Intraoperative fluoroscopy for hindfoot alignment can predict surgical outcomes. Lower body mass index in patients correlates with more accurate alignment predictions, improving reconstructive surgery results.
Area of Science:
- Orthopedic surgery
- Radiology
- Biomechanical analysis
Background:
- Intraoperative hindfoot alignment is crucial for successful foot and ankle reconstructive surgery outcomes.
- Accurate assessment of hindfoot alignment during surgery is challenging but essential.
Purpose of the Study:
- To evaluate the utility of simulated weight-bearing fluoroscopy for intraoperative hindfoot alignment assessment.
- To determine if intraoperative fluoroscopy can predict postoperative hindfoot alignment.
Main Methods:
- Retrospective review of 155 patients (2014-2021) with abnormal hindfoot alignment.
- Comparison of intraoperative hindfoot alignment view (HAV) fluoroscopy with postoperative HAV radiographs.
- Measurement of hindfoot alignment angle (HAA) and hindfoot alignment ratio (HAR) on both image types.
Main Results:
- Satisfactory intraobserver and interobserver reliability for HAA and HAR measurements.
- Significant correlations found between intraoperative and postoperative HAA (R²=0.631) and HAR (R²=0.262).
- Body mass index positively affected the difference between intraoperative and postoperative HAA.
Conclusions:
- Intraoperative simulated weight-bearing HAV fluoroscopy is a valuable tool for predicting postoperative hindfoot alignment.
- Lower body mass index is associated with smaller deviations in hindfoot alignment measurements between intraoperative and postoperative assessments.
Keywords:
hindfoot alignmenthindfoot alignment viewreconstructive surgerysimulated weightbearing fluoroscopy
