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A novel joint angle estimation method is proposed using a new bio-signal for an amputee subject. We used the muscle bulge movement on the forearm skin surface as a new bio-signal for estimating the extent of motion in a previous study. We found that it is feasible to estimate the intended wrist joint angle using the distribution of the muscle bulge for intact subjects. Thus, in the present paper,...
The objective of this paper is to develop a method to estimate the wrist joint angle based on the deformation of the forearm skin surface during muscle contraction. We have focused on the longitudinal movement of the muscle bulge along the forearm. We previously confirmed a one-to-one relationship between the movement of the muscle bulge and the wrist joint angle, and validated the feasibility of...
Static stretching is widely used as a preventative treatment for musculoskeletal disabilities by providing muscle hypotonicity, which results from changes in muscle tissue structure. However, the quantitative evaluation of hypotonicity during stretching has had limited success owing to the confounding factor of mechanical stress relaxation. To resolve this problem, we propose a new evaluation method...
Skin surface irregularity is the most common side effect after liposuction. To reduce this, it is necessary to devise a systematic method to provide structural composition details of skin layers, such as fat thickness and fat boundary tilt angle, for the plastic surgeon. Several commercial portable devices are available to measure skin layer information, working on the principle of a near-infrared...
Purpose To design an endoscopic manipulator for fetal surgery. The viscoelastic properties of fetal skin were estimated from both the viewpoint of mechanical structure and data collection for controlling the device. Methods The skin of fetal Wistar rat (19.5 days old) was set on a rheometer and the relationship between stress and strain was examined. Morphological damage was assessed histologically...
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