Ultrasound-based testing of tendon mechanical properties: a critical evaluation

Area of Science:

• Biomechanics
• Musculoskeletal Research
• Medical Imaging

Background:

• Ultrasound-based methods are standard for in vivo tendon mechanical property assessment.
• Significant variability in reported values suggests inconsistencies in methodologies.
• Divergent approaches exist in both technical and physiological considerations.

Purpose of the Study:

• To critically review and discuss physiological and technical aspects of in vivo tendon mechanical property testing using ultrasound.
• To provide a qualitative analysis of current ultrasound-based techniques.
• To offer recommendations for standardizing selected issues in tendon research.

Main Methods:

• Literature review of studies employing ultrasound for in vivo tendon mechanical property measurement.
• Analysis of methodological variations in anatomical feature selection, force measurement, and signal synchronization.
• Assessment of physiological factors including viscoelasticity and tendon length measurement.

Main Results:

• Identified key areas of divergence in methodological and physiological considerations.
• Highlighted the impact of these variations on the reliability of reported tendon mechanical properties.
• Synthesized findings to inform best practices in ultrasound-based tendon analysis.

Conclusions:

• Standardization of ultrasound-based methods is crucial for reducing variability in in vivo tendon mechanical property measurements.
• Addressing methodological and physiological considerations can enhance the accuracy and comparability of research findings.
• Recommendations are provided to guide future research and clinical applications.