Evaluation of anisotropic properties of striae distensae with regard to skin surface texture and viscoelasticity

Kim, Min Ah; Jung, Yun-Chae; Kim, Eun Joo

doi:10.1111/srt.12783

Cited by 4 publications

(7 citation statements)

References 20 publications

(69 reference statements)

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“…Although, limitations in the assessment method contributing to the poor reliability as described above may also cause limitations in the evaluation of the validity. In previous research, the CutiScan CS 100 ® was able to demonstrate that striae distensae are more anisotropic compared to adjacent normal skin 21 . Kim et al 21 .…”

Section: Discussionmentioning

confidence: 96%

“…This device uses mechanical force in combination with imaging 17 . The CutiScan CS 100 ® has already been used to compare the changes in the biomechanical properties of the healthy human skin (viscoelasticity and anisotropy) depending on the anatomical site, 18,19 to investigate the influence of hydration on the biomechanical behavior of the human skin, 20 and to evaluate anisotropic properties of striae distensae 21 . However, to our knowledge, it is not certain whether viscoelasticity and anisotropy measured with the CutiScan CS 100 ® are reliable and valid outcome measures for mastectomy scars.…”

Section: Introductionmentioning

confidence: 99%

“…17 The CutiScan CS 100 ® has already been used to compare the changes in the biomechanical properties of the healthy human skin (viscoelasticity and anisotropy) depending on the anatomical site, 18 , 19 to investigate the influence of hydration on the biomechanical behavior of the human skin, 20 and to evaluate anisotropic properties of striae distensae. 21 However, to our knowledge, it is not certain whether viscoelasticity and anisotropy measured with the CutiScan CS 100 ® are reliable and valid outcome measures for mastectomy scars. Therefore, the aim of the current study is to investigate intrarater reliability, interrater reliability, and criterion validity of the CutiScan CS 100 ® in breast cancer patients with scar tissue adhesions after a mastectomy procedure.…”

Section: Introductionmentioning

confidence: 99%

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Can the CutiScan CS 100^® measure anisotropy and viscoelasticity in scar tissue after mastectomy? A reliability and validity study

Anthonissen

Kerckhove

Devoogdt

et al. 2021

Skin Research and Technology

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Background: Scars have different biomechanical characteristics, including anisotropy and viscoelasticity compared to healthy skin. To assess these characteristics, the CutiScan CS 100 ® can be used. The aim of the present study is to investigate reliability and validity of this device in breast cancer patients. Materials and methods:Thirty female patients, with scar adhesions following mastectomy were assessed with the CutiScan CS 100 ® . Maximal distensibility (pixels) (V1), after-suction return rate (pixels) (V2), and their ratio (%) (V3) at three points on and around the scar were assessed as measures of viscoelasticity. For intra-and interrater reliabilities, the intra-class correlation coefficient (ICC) and its 95% confidence intervals were calculated. The standard error of measurement (SEM) was calculated to interpret reproducibility of these measurements. To investigate criterion validity of the measurement of anisotropy, measurements in the direction of healthy skin were compared with measurements in the direction of the scar, using a paired t-test.Results: V1, V2, and V3 show poor to moderate intrarater reliability (ICC 0.00-0.72) and interrater reliability (ICC 0.00-0.53). The maximum displacement (V1) on the measurement point above the scar shows the best reliability (ICC 0.33-0.72). The SEM is about the same for all parameters at all three points. The paired sample t-test showed a significant difference (p < 0.05) between V1 in the direction towards the scar versus the measurement towards healthy tissue, on the point below the scar. Conclusion:These first reliability and validity results of the CutiScan CS 100 ® for measuring anisotropy and viscoelasticity in scar tissue adhesions after mastectomy seem promising. Further research is needed addressing the limitations of the present study design.

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Section: Discussionmentioning

confidence: 96%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Can the CutiScan CS 100^® measure anisotropy and viscoelasticity in scar tissue after mastectomy? A reliability and validity study

Anthonissen

Kerckhove

Devoogdt

et al. 2021

Skin Research and Technology

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“…CutiScan is also based on suction method and describes viscoelastic properties as well as skin anisotropy 3,4,36 . However viscoelastic properties are not yet defined with any standard SI units.…”

Section: Introductionmentioning

confidence: 99%

“…CutiScan is also based on suction method and describes viscoelastic properties as well as skin anisotropy. 3 , 4 , 36 However viscoelastic properties are not yet defined with any standard SI units. V1 parameter shows the maximum displacement, V2 – represents the ability to retract to its initial shape, and V3 is a ratio of V2/V1.…”

Section: Introductionmentioning

confidence: 99%

Skin biomechanical and viscoelastic properties measured with MyotonPRO in different areas of human body

Rosicka¹,

Mierzejewska-Krzyzowska²,

Mrówczyński

2021

Skin Research and Technology

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Background: There is still a lack of clinically practical device, which allows to perform rapid and accurate examination of the skin condition. For this reason, suitability of the MyotonPRO for the assessment of skin biomechanical and viscoelastic parameters was evaluated in this study. The aim of the study was to establish the reference values of five parameters measured by MyotonPRO various locations of human skin. Materials and methods:Oscillation frequency, dynamic stiffness, logarithmic decrement, mechanical stress relaxation and creep were measured at three different skin locations (clavicula, volar forearm and shin), using L-shape short and medium arm probes in 32 young female volunteers. Mean values of obtained parameters recorded by both probes were compared among three skin locations while reliabilities of measurements were assessed. Additionally, relationships between all recorded parameters were examined Results: There were no statistically significant differences between the mean values of five measured parameters obtained with both probes in all investigated areas. However, statistically significant differences of mean values of almost all parameters measured among three places examined were found. Despite considerable differences in mean values of obtained parameters, there were visible strong correlations between some studied parameters in all three investigated areas of skin. Conclusion:It was demonstrated in all locations studied that the higher value of oscillation frequency corresponds to the higher value of dynamic stiffness, moreover such tissue recovers faster to its initial shape, and it was characterized by lower creep values.Such results indicate the existence of identical relationships between the same studied parameters in different areas of skin.

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Liquid Crystal Elastomer Metamaterials with Giant Biaxial Thermal Shrinkage for Enhancing Skin Regeneration

Yao

Zhang

et al. 2021

Advanced Materials

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excellent actuation performances (e.g., large reversible strain and fast response), LCEs have been widely exploited for applications in artificial muscles, [8,9] soft actuators, [10][11][12] and flexible robots. [13][14][15][16] Owing to the liquid crystalline anisotropy, [17][18][19] the solid LCE films only offer excellent uniaxial actuation performances (i.e., along the direction of the liquid crystalline alignment), which has been utilized to enable complex modes (e.g., bending, [20,21] rolling, [22] and twisting [23] ) of actuation. Compelling application opportunities (e.g., tissue regeneration, viscera repair, and artificial organs) would be opened up, if LCEs are equipped with comparable biaxial actuation capabilities (e.g., actuation strain > 40%). However, in conventional fabrication techniques, the alignment of solid LCE films is primarily achieved by molecular interactions with command surface, [24,25] external mechanical stretching, [14] or magnetic fields, [9,26] which could not be used to fabricate LCE films with high biaxial actuation strains (e.g., >10%). While the recently developed 3D printing technique [27][28][29] enables fabrication of LCE structures with predesigned alignments, the reported biaxial actuation strain (≈20%) is not high, due to limited mechanical performances (e.g., stretchability and strength) of 3D-printed LCE structures. So far, the development of LCE materials capable of offering excellent biaxial actuation Liquid crystal elastomers (LCEs) are a class of soft active materials of increasing interest, because of their excellent actuation and optical performances. While LCEs show biomimetic mechanical properties (e.g., elastic modulus and strength) that can be matched with those of soft biological tissues, their biointegrated applications have been rarely explored, in part, due to their high actuation temperatures (typically above 60 °C) and low biaxial actuation performances (e.g., actuation strain typically below 10%). Here, unique mechanics-guided designs and fabrication schemes of LCE metamaterials are developed that allow access to unprecedented biaxial actuation strain (−53%) and biaxial coefficient of thermal expansion (−33 125 ppm K −1 ), significantly surpassing those (e.g., −20% and −5950 ppm K −1 ) reported previously. A low-temperature synthesis method with use of optimized composition ratios enables LCE metamaterials to offer reasonably high actuation stresses/strains at a substantially reduced actuation temperature (46 °C). Such biocompatible LCE metamaterials are integrated with medical dressing to develop a breathable, shrinkable, hemostatic patch as a means of noninvasive treatment. In vivo animal experiments of skin repair with both round and cross-shaped wounds demonstrate advantages of the hemostatic patch over conventional strategies (e.g., medical dressing and suturing) in accelerating skin regeneration, while avoiding scar and keloid generation.

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Evaluation of anisotropic properties of striae distensae with regard to skin surface texture and viscoelasticity

Cited by 4 publications

References 20 publications

Can the CutiScan CS 100^® measure anisotropy and viscoelasticity in scar tissue after mastectomy? A reliability and validity study

Can the CutiScan CS 100^® measure anisotropy and viscoelasticity in scar tissue after mastectomy? A reliability and validity study

Skin biomechanical and viscoelastic properties measured with MyotonPRO in different areas of human body

Liquid Crystal Elastomer Metamaterials with Giant Biaxial Thermal Shrinkage for Enhancing Skin Regeneration

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Evaluation of anisotropic properties of striae distensae with regard to skin surface texture and viscoelasticity

Cited by 4 publications

References 20 publications

Can the CutiScan CS 100® measure anisotropy and viscoelasticity in scar tissue after mastectomy? A reliability and validity study

Can the CutiScan CS 100® measure anisotropy and viscoelasticity in scar tissue after mastectomy? A reliability and validity study

Skin biomechanical and viscoelastic properties measured with MyotonPRO in different areas of human body

Liquid Crystal Elastomer Metamaterials with Giant Biaxial Thermal Shrinkage for Enhancing Skin Regeneration

Contact Info

Product

Resources

About

Can the CutiScan CS 100^® measure anisotropy and viscoelasticity in scar tissue after mastectomy? A reliability and validity study

Can the CutiScan CS 100^® measure anisotropy and viscoelasticity in scar tissue after mastectomy? A reliability and validity study