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Inconsistency in Shoulder Arthrometers for Measuring Glenohumeral Joint Laxity: A Systematic Review
Eluana Gomes1, Renato Andrade1,2,3, Cristina Valente1,2
1Clínica Espregueira-FIFA Medical Centre of Excellence, 4350-415 Porto, Portugal.
Bioengineering (Basel, Switzerland)
|July 29, 2023
Summary
Measuring shoulder joint laxity with arthrometers shows significant variability. This systematic review highlights inconsistent results due to device differences and testing conditions, impacting clinical decisions.
Area of Science:
- Orthopedics
- Biomechanics
- Sports Medicine
Background:
- Shoulder joint laxity measurement lacks standardized protocols.
- Existing literature on shoulder arthrometers is not well-systematized.
- Glenohumeral laxity assessment is crucial for diagnosing and treating shoulder injuries.
Purpose of the Study:
- To systematically review and summarize glenohumeral laxity measurements using shoulder arthrometers.
- To compare results across different populations (healthy, asymptomatic, symptomatic) and arthrometer devices.
- To identify factors contributing to variability in shoulder laxity measurements.
Main Methods:
- Systematic literature search of PubMed, EMBASE, and Web of Science databases.
- Inclusion of 23 studies involving 1162 shoulders.
- Comparison of mean laxity and standard deviations based on population type and arthrometer used.
Main Results:
- Sensor-based methods were most common for measuring glenohumeral laxity and stiffness.
- External force applied manually to the humerus was a frequent mechanism.
- Substantial heterogeneity in laxity values was observed, linked to arthrometer type and testing conditions.
Conclusions:
- Variability in shoulder arthrometer measurements complicates diagnosis and treatment planning.
- Standardization of arthrometer use and testing protocols is needed.
- Further research should focus on consistent methodologies for reliable glenohumeral laxity assessment.
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