Related Experiment Video
Updated: Jan 6, 2026
A Mouse Model of Ankle-Subtalar Complex Joint Instability
Published on: October 28, 2022
Broström With Augmentation Markedly Improves Ankle Stability Measured by the Cumberland Ankle Instability Tool
Steven M Hadley1, Rachel Bergman, Sarah J Westvold
1From the Northwestern University Feinberg School of Medicine (Hadley and Kukreja), the Department of Orthopaedic Surgery, Northwestern University Feinberg School of Medicine, Chicago, IL (Bergman, Filler, and Kadakia), and Yale School of Medicine, New Haven, CT (Westvold).
Broström surgery with InternalBrace augmentation significantly improves ankle stability compared to nonaugmented Broström, especially for patients with high preoperative instability. This enhanced stability is measured by the Cumberland Ankle Instability Tool (CAIT).
Area of Science:
- Orthopedic surgery
- Sports medicine
- Ankle instability research
Background:
- Limited data compare Broström surgery with and without InternalBrace augmentation for ankle stability.
- The Cumberland Ankle Instability Tool (CAIT) is used to measure ankle stability.
Purpose of the Study:
- To determine if InternalBrace augmentation enhances ankle stability compared to nonaugmented Broström surgery.
- To assess the impact of baseline instability on the effectiveness of augmentation.
Main Methods:
- Retrospective review of 127 patients undergoing lateral ankle ligament reconstruction (2013-2024).
- Exclusion of specific cases like revisions, allografts, and concomitant injuries.
- Postoperative CAIT scores were collected and analyzed using linear regression, controlling for preoperative CAIT and covariates.
Main Results:
- Augmented Broström showed significantly higher postoperative CAIT scores (20.6 vs. 16.5, P=0.02).
- Adjusted analyses indicated augmented surgery was associated with a 7.13-point higher CAIT score (P<0.01).
- The benefit of augmentation was most significant in patients with high preoperative instability (25th percentile).
Conclusions:
- Broström surgery with InternalBrace augmentation may improve ankle stability more than nonaugmented Broström.
- The positive effect of augmentation is most evident in patients presenting with significant preoperative ankle instability.
