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KMID : 1037920220090020041
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Arthroscopy and Orthopedic Sports Medicine
2022 Volume.9 No. 2 p.41 ~ p.48
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Validation of posturography analysis in patients undergoing surgery for chronic ankle instability
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Yoo Byung-Min
Kim I-Sac
Lee Sung-Hyun
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Abstract
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Background: Evaluation of the function of patients with chronic ankle instability (CAI) in clinical settings is important not only to identify the damage severity but also to evaluate the treatment effectiveness and prevent recurrence. However, objective diagnostic indicators for evaluating the functional stability of CAI are uncommon. This study aimed to determine the validity of the posturography test as an objective indicator of functional instability in relation to the Foot and Ankle Outcome Score (FAOS) and modified Star Excursion Balance Test (mSEBT) following the modified Brostrom procedure for CAI.
Methods: A retrospective study was conducted on patients who underwent CAI surgery and posturography before and 1 year after surgery. The FAOS was measured as subjective result and the mSEBT as objective result. Posturography analysis using Tetrax devices was conducted to measure fall risk and general stability index. The difference between the measured fall risk and general stability index before and after surgery was compared with that between FAOS and mSEBT before and after surgery.
Results: A total of 87 patients were evaluated. Their average age was 32.2 years, and the average follow-up period was 29.6 months. The differences in the fall risk before and after surgery, measured via posturography, were associated with FAOS pain, sports activities, daily life activities, quality of life, and mSEBT. In addition, the differences in the general stability index before and after surgery, measured via posturography, were associated with mSEBT.
Conclusion: In the posturography, the fall risk and general stability index exhibited a weak negative correlation with mSEBT. In addition, the fall risk demonstrated a weak negative correlation with the FAOS, which is a subjective result. These findings indicate that posturography using Tetrax devices is a useful and reliable tool for the objective evaluation of the functional stability of patients with CAI.
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KEYWORD
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Ankle, Joint instability
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