Comparison of ankle arthrometry to stress ultrasound imaging in the assessment of ankle laxity in healthy adults (original) (raw)

Uploaded (2015) | Journal: International journal of sports physical therapy

Abstract

Ultrasonography (US) may aid the assessment of the anterior talofibular ligament (ATFL) injury after lateral ankle sprains by allowing the clinician to visualize and measure talocrural laxity. Comparison of US against another objective method of ankle laxity assessment, such as ankle arthrometry (AA), is needed. The purpose was to evaluate the relationship between the ATFL length measurements measured from stress US images to the inversion and anterior drawer displacement measured with AA in healthy subjects. This descriptive laboratory study included 26 ankles from healthy subjects. The apparent length of the ATFL was measured using US during anterior drawer (USAD) and inversion (USINV) stress and the translation of the talocrural joint was measured using AA during anterior drawer (AAAD) and inversion (AAINV) stress. Percent change in length for USAD and USINV were quantified. Intraclass correlation coefficients and pearson product moment correlations Bland-Altman limits of agreeme...

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How does ankle arthrometry measure joint stability compared to stress ultrasound?add

The study found that ankle arthrometry showed 5.64 ± 2.79 mm anterior translation and 25.6 ± 9.0º inversion, highlighting its effectiveness in joint stability measurement.

What were the statistical reliability outcomes for the ultrasound imaging technique?add

Interexaminer reliability for ultrasound measurements ranged from 0.77 to 0.91, demonstrating high levels of reliability across different testing conditions.

What correlations did the study find between ankle arthrometry and ultrasound measurements?add

No significant correlations were found between the primary US and AA variables, suggesting different measurement focuses between methods.

How was the relationship between ATFL lengthening and inversion laxity assessed?add

A Bland-Altman plot revealed a mean difference of 5.38 mm between AAAD and USAD, indicating differing assessments of ankle laxity.

What was the participant selection criteria for the study's healthy subjects?add

Twenty-six healthy subjects with no history of bilateral ankle sprains or current ankle-related injuries were included, ensuring a standardized assessment environment.

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