Suction Chamber Method for Measurement of Skin Mechanics

Barel, Alain; Courage, W.M.G.; Clarys, Peter

doi:10.3109/9781420003307-80

Cited by 48 publications

(57 citation statements)

References 8 publications

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“…2,5 Therefore, we used the large 8 mm diameter measuring probe to determine the biomechanical properties of the whole skin layer, rather than the small 2-mm probe that covers only the epidermis and the papillary dermis. 9,11 Decreased Uf in SG1 and TG1 indicates increased hardening of the skin. This is probably due to chronic skin thickening characterized by brawny induration and dermal fibrosis.…”

Section: Discussionmentioning

confidence: 99%

“…It evaluates skin vertical deformation using an optical unit when it is pulled upwards by means of a controlled vacuum. 9,11 Among 2À8 mm diameter probes, large 8 mm probe was used in this study. The time/strain mode was selected, with five consecutive cycles of a 5 s application of vacuum at 450 mbar, followed by a 3 s relaxation period ( Figure 1).…”

Section: Skin Measurementsmentioning

confidence: 99%

“…(5) H (hysteresis) is the difference between distension between the fifth and the first suction. 9,11 Cutometer has been used as a tool in the research of normal skin and skin diseases that affect skin mechanics, such as psoriasis, scleroderma and diabetes mellitus. [12][13][14][15] However, to our knowledge, no study has systematically examined skin affected by SCI with the intention to define the precise biomechanical features and to elucidate which nervous systems are directly associated with skin alterations.…”

Section: Introductionmentioning

confidence: 99%

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Sympathetic influence on biomechanical skin properties after spinal cord injury

et al. 2010

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Study design: Case-control study. Objectives: To investigate changes of biomechanical skin properties and their relationship with paralysis following spinal cord injury (SCI). Setting: South Korea. Methods: A total of 48 male subjects with chronic SCI and 48 age-matched healthy controls were enrolled into this study. The C4 shoulder group and L2 thigh group were prescribed by two measured anatomical regions that represented the C4 and L2 American Spinal Injury Association sensory dermatomes. Each anatomical group was comprised of one control subgroup and three SCI subgroups determined by sympathetic paralysis at the measured region and somatic completeness. The following biomechanical skin properties were compared between the subgroups in each anatomical group by using Cutometer, a non-invasive suction device: distensibility (Uf), elasticity (Ua/Uf and Ur/Uf) and viscoelasticity (Uv/Ue and H). The impact of sympathetic and somatic sensory paralysis, somatic completeness, age, smoking, body mass index and duration of injury on the indices of skin properties were analyzed. Results: In each anatomical group, sympathetic paralyzed subgroups regardless of somatic sensory completeness showed lower value of skin distensibility (Uf), and higher values of elasticity (Ua/Uf and Ur/Uf) and viscoelasticity (Uv/Ue and H), compared with other subgroups. Age and duration of injury had significant impact on biomechanical skin properties. Conclusion: The non-invasive suction method is useful for quantitative evaluation of skin affected by SCI. In chronic SCI patients, biomechanical skin properties are significantly altered in the skin with sympathetic paralysis rather than somatic sensory paralysis.

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Section: Discussionmentioning

confidence: 99%

Section: Skin Measurementsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Sympathetic influence on biomechanical skin properties after spinal cord injury

et al. 2010

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“…The measurement of skin elasticity (done with Cutometer MPA 580) is based upon peculiar mechanical properties of human skin and represents a non-invasive method whose use has become solid and widely spread in dermatology and cosmetics [29][30][31][32][33][34][35] and acknowledged by the European Expert Group on Efficacy Measurement of Cosmetics and other Topical Products (EEMCO) [36].…”

Section: Methodsmentioning

confidence: 99%

Tolerability and hydrating effects of an anti-aging gynaecological collagen cream in women in menopause

Stefano¹,

Radicioni²,

Vele³

et al. 2014

OJOG

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Background and Aims: A gynaecological cream containing collagen, phytocollagen, hyaluronate and vitamins was investigated in women in menopause. Methods: The cream was daily applied to the vaginal mucosa and the perineal skin as well as to the abdominal skin (healthy skin used as control) for 1 week and then on alternate days for other 2 weeks. Skin hydration and viscoelasticity were measured at baseline and after 8 and 21 days by Corneometer ® CM 825 and Cutometer ® MPA 850, respectively. The product use comfort and the moisturising of the vaginal mucosa were evaluated by the volunteers through a questionnaire and a visual analogue scale, respectively. Results: The local tolerability was excellent for nearly all of the volunteers (90% -95%) and according both to dermatologist's and gynaecologist's evaluation. Related adverse reactions had a frequency of 15% (10% vulvovaginal burning sensation and 5% vulvovaginal discomfort). The topical hydration increased both in the perineal and the abdominal skin. Hydration increase vs. baseline was more marked on day 8 than on day 21 and was significant in the abdominal skin (p-value < 0.0001). The vaginal moisturising improved significantly (p-value < 0.0001) both on day 8 and 21 vs. baseline. Small changes in the viscoelasticity parameters were observed in both the perineal and the abdominal skin. Few significant improvements were R1 and R8 decreases in the perineum and R0 increase in the abdomen. Conclusions: The tested cream represents a safe product with proven moisturising effect towards the vaginal mucosa when daily applied by menopausal women.

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“…A typical strain-time curve of human skin is illustrated in Figure 1. The following deformation parameters used to describe the curve were proposed by Agache et al [18]: immediate distension-skin extensibility (U e ); delayed distension reflecting the viscoelastic contribution of the skin (U v ); immediate retraction (U r ); final skin deformation -skin distensibility (U f ); total recovery of skin after removing vacuum (U a ); gross elasticity of the skin, including viscous deformation (U a / U f ); net elasticity of the skin without viscous deformation (U r / U e ); the portion of the viscoelasticity on elastic segment of the curve (U v / U e ); biological elasticity (U r / U f ) [8,19]. In the current study, the measurements were performed using the time-strain mode that can be used to estimate the skin properties.…”

Section: Mechanical Propertiesmentioning

confidence: 99%

The contributions of skin structural properties to the friction of human finger-pads

Liu

Gad

et al. 2015

Proceedings of the Institution of Mechanical Engineers, Part J:

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This paper describes three series of tests that were designed to investigate how skin mechanical and structural properties, measured using a "Cutometer" and Optical Coherence Tomography, affect the frictional behaviour of human finger-pads. Firstly, the skin mechanical properties across all fingers and the palm in participants' dominant hands were assessed. Results showed that the distensibility of skin (total deformation in a suction test) is associated with stratum corneum thickness and that this in turn affects friction (thicker stratuem corneum leads to higher friction), giving a link between distensibility and friction.Tape stripping to remove the superficial layer of the skin led to increased moisture (and/or electric charge on the skin surface) led to higher friction. No accompanying changes were seen in structural properties so it was concluded that moisture was the main cause of the adhesion increase. More work is required to isolate moisture and possible changes in electric charge using alternative measurement techniques.When rubbing with sand paper, the stratum corneum thinned considerably and friction reduced. Moisture was ruled out as a cause of friction changes in this instance. Skin normal stiffness also did not change, but lateral stiffness changes have been seen in previous work when the stratum corneum thickness has been reduced so this is likely to be the cause of the reduced friction. This will be investigated further in future work using dynamic OCT measurements.

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Suction Chamber Method for Measurement of Skin Mechanics

Cited by 48 publications

References 8 publications

Sympathetic influence on biomechanical skin properties after spinal cord injury

Sympathetic influence on biomechanical skin properties after spinal cord injury

Tolerability and hydrating effects of an anti-aging gynaecological collagen cream in women in menopause

The contributions of skin structural properties to the friction of human finger-pads

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