Back to Search
Start Over
EEMCO Guidance for the in vivo Assessment of Biomechanical Properties of the Human Skin and Its Annexes: Revisiting Instrumentation and Test Modes
- Publication Year :
- 2019
- Publisher :
- Charité - Universitätsmedizin Berlin, 2019.
-
Abstract
- Biomechanics of the skin is an important subject in skin research. It has been studied for many decades involving various technologies and methods to characterize and quantify mechanical properties of the skin under different in vivo conditions. The present EEMCO paper reviews the current rel­evant information, providing practical orientation to researchers dedicated to in vivo assessment of biomechanics of skin and its annexes. We discuss the available non-invasive instruments, including their principles and variables. A correspondence between the descriptors nomenclature proposed by Agache and the designation for the suction-based standard instruments is proposed. The addressed properties include skin softness/stiffness, firmness, elasticity, elastic and viscoelastic properties, extensibility, resilience, anisotropy, acoustical shock wave hardness, friction (in relation to topographic properties), thickness, fiber/stress mechanics (bending, cyclic, tensile, fatigue, or torsion), and hardness. We provide the relation of these properties to biomechanical descriptors and in some cases to SI units. Practical guidance for the proper use of these instruments, limitations, and possible interpretations are provided, while discussing the meaning of descriptive or “phenomenological” variables. For studies intended to quantify the effect of an intervention with regard to mechanical properties, we recommend a minimum of 30–40 participants, based on normal distribution of the data sets. Some important limitations are recognized, including the lack of standardization of procedures and calibration of instruments, which compromises the relevance and real nature of the descriptors/parameters obtained with these devices. The present work highlights an approach to a better practice and a science-supported biomechanical assessment of human skin, hair, and nails.
- Subjects :
- 0301 basic medicine
Standardization
Physiology
Computer science
Human skin
Mechanical properties
Dermatology
Testing modes
030207 dermatology & venereal diseases
03 medical and health sciences
Testing methods
0302 clinical medicine
medicine
Skin
Pharmacology
integumentary system
business.industry
Biomechanics
Torsion (mechanics)
Stiffness
Instrumental measurements
General Medicine
Structural engineering
Elasticity
Cosmetics efficacy
030104 developmental biology
Nails
SKIN SOFTNESS
Anisotropy
medicine.symptom
business
Biomechanical assessment
600 Technik, Medizin, angewandte Wissenschaften::610 Medizin und Gesundheit::610 Medizin und Gesundheit
Hair
Subjects
Details
- Database :
- OpenAIRE
- Accession number :
- edsair.doi.dedup.....4d676761d4f978fce89fdc48965acbc2
- Full Text :
- https://doi.org/10.17169/refubium-30956