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Mechanical properties of the skin: a comparison between two suction cup methods
L Pedersen1, B Hansen, G B E Jemec
1Department of medicine, Roskilde Hospital and Osteoporosis Research Centre, Hvidovre Hospital, University of Copenhagen, Denmark. louisepedersen@get2net.dk
Summary
Comparing skin mechanical property measurement devices, the Dermaflex and DermaLab, revealed both are useful for detecting age-related skin changes, with Dermaflex offering higher accuracy.
Area of Science:
- Dermatology
- Biomechanics
- Biomedical Engineering
Background:
- Objective measurement of skin mechanical properties is crucial for clinical and research applications.
- Lack of standardized methods for visco-elastic skin data hinders result comparability.
Purpose of the Study:
- To compare the Dermaflex and DermaLab devices for measuring skin mechanical properties.
- To assess device accuracy and identify factors influencing measurements.
Main Methods:
- Mechanical properties of the ventral forearm were measured in 35 healthy volunteers.
- The Dermaflex and DermaLab devices were compared using descriptive statistics and non-parametric correlations.
- Measurement accuracy was evaluated using the coefficient of variation, with sub-analyses by gender and age.
Main Results:
- Moderate correlations (r = 0.383-0.437) were observed between the two devices.
- The DermaLab exhibited a greater coefficient of variation compared to the Dermaflex.
- Significant age-related differences in skin mechanical properties were detected (30-39 vs. 40-58 years), but no gender differences were found.
Conclusions:
- Both Dermaflex and DermaLab are valuable tools for assessing skin mechanical properties, particularly for identifying age-related changes.
- The Dermaflex appears to provide more accurate data, potentially due to design differences.
- The devices measure related but distinct aspects of skin mechanics.