scholarly journals Remitted photon path lengths in human skin: in-vivo measurement data

2020 ◽  
Vol 11 (5) ◽  
pp. 2866 ◽  
Author(s):  
V. Lukinsone ◽  
A. Maslobojeva ◽  
U. Rubins ◽  
M. Kuzminskis ◽  
M. Osis ◽  
...  
Keyword(s):  
Human Skin ◽  
Measurement Data ◽  
In Vivo Measurement ◽  
Path Lengths ◽  
Photon Path

scholarly journals Towards planning of osteotomy around the knee with quantitative inclusion of the adduction moment: a biomechanical approach

2021 ◽  
Vol 8 (1) ◽  
Author(s):  
Margit Biehl ◽  
Philipp Damm ◽  
Adam Trepczynski ◽  
Stefan Preiss ◽  
Gian Max Salzmann
Keyword(s):  
Gait Analysis ◽  
Measurement Data ◽  
Frontal Plane ◽  
Medial Compartment ◽  
Knee Adduction Moment ◽  
In Vivo Measurement ◽  
Force Ratio ◽  
Leg Alignment ◽  
Alignment Angle

Abstract Purpose Despite practised for decades, the planning of osteotomy around the knee, commonly using the Mikulicz-Line, is only empirically based, clinical outcome inconsistent and the target angle still controversial. A better target than the angle of frontal-plane static leg alignment might be the external frontal-plane lever arm (EFL) of the knee adduction moment. Hypothetically assessable from frontal-plane-radiograph skeleton dimensions, it might depend on the leg-alignment angle, the hip-centre-to-hip-centre distance, the femur- and tibia-length. Methods The target EFL to achieve a medial compartment force ratio of 50% during level-walking was identified by relating in-vivo-measurement data of knee-internal loads from nine subjects with instrumented prostheses to the same subjects’ EFLs computed from frontal-plane skeleton dimensions. Adduction moments derived from these calculated EFLs were compared to the subjects’ adduction moments measured during gait analysis. Results Highly significant relationships (0.88 ≤ R2 ≤ 0.90) were found for both the peak adduction moment measured during gait analysis and the medial compartment force ratio measured in vivo to EFL calculated from frontal-plane skeleton dimensions. Both correlations exceed the respective correlations with the leg alignment angle, EFL even predicts the adduction moment’s first peak. The guideline EFL for planning osteotomy was identified to 0.349 times the epicondyle distance, hence deducing formulas for individualized target angles and Mikulicz-Line positions based on full-leg radiograph skeleton dimensions. Applied to realistic skeleton geometries, widespread results explain the inconsistency regarding correction recommendations, whereas results for average geometries exactly meet the most-consented “Fujisawa-Point”. Conclusion Osteotomy outcome might be improved by planning re-alignment based on the provided formulas exploiting full-leg-radiograph skeleton dimensions.

Rapid in vivo measurement of the topography of human skin by active image triangulation using a digital micromirror device

1999 ◽  
Vol 5 (3) ◽  
pp. 195-207 ◽  
Author(s):  
S. Jaspers ◽  
H. Hopermann ◽  
G. Sauermann ◽  
U. Hoppe ◽  
R. Lunderstädt ◽  
...  
Keyword(s):  
Human Skin ◽  
Digital Micromirror Device ◽  
In Vivo Measurement

scholarly journals Micromachined Fiber Optical Sensor for In Vivo Measurement of Optical Properties of Human Skin

2008 ◽  
Vol 8 (10) ◽  
pp. 1698-1703 ◽  
Author(s):  
Alejandro Garcia-Uribe ◽  
Karthik Chinna Balareddy ◽  
Jun Zou ◽  
Lihong V. Wang
Keyword(s):  
Optical Properties ◽  
Human Skin ◽  
Optical Sensor ◽  
In Vivo Measurement ◽  
Fiber Optical Sensor ◽  
Fiber Optical

In vivo measurement of human skin absorption of topically applied substances by a photoacoustic technique

2002 ◽  
Vol 23 (3) ◽  
pp. 521-532 ◽  
Author(s):  
G Guti$eacute$rrez-Ju$aacute$rez ◽  
M Vargas-Luna ◽  
T C$oacute$rdova ◽  
J B Varela ◽  
J J Bernal-Alvarado ◽  
...  
Keyword(s):  
Human Skin ◽  
Photoacoustic Technique ◽  
Skin Absorption ◽  
In Vivo Measurement
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