Search

Your search keyword '"Kim, Yoon Hyuk"' showing total 430 results
Start Over Author "Kim, Yoon Hyuk"

Refine your results

more »

more »

more »

more »
430 results on '"Kim, Yoon Hyuk"'

105. Effects of medial collateral ligament release, limb correction, and soft tissue laxity on knee joint contact force distribution after medial opening wedge high tibial osteotomy: a computational study.

Author

Purevsuren, Tserenchimed, Khuyagbaatar, Batbayar, Kim, Kyungsoo, and Kim, Yoon Hyuk

Subjects
OSTEOTOMY, MEDIAL collateral ligament (Knee), OSTEOARTHRITIS, DEGENERATION (Pathology), BIOMECHANICS
Abstract

In this study, the effects of medial collateral ligament (MCL) release and the limb correction strategies with pre-existing MCL laxity on tibiofemoral contact force distribution after high tibial osteotomy (HTO) were investigated. The medial and lateral contact forces of the knee were quantified during simulated standing using computational modeling techniques. MCL slackness had a primary influence on contact force distribution of the knee, while there was little effect of simulated limb correction. Anterior and middle bundle release, which involved the partial release of two-thirds of the superficial MCL, was shown to be an optimal surgical method in HTO, achieving balanced contact distribution in simulated weight-bearing standing. [ABSTRACT FROM AUTHOR]

Published
2019
Full Text
View/download PDF

117. Interjoint coordination of the lower extremities in short-track speed skating.

Author

Batbayar Khuyagbaatar, Tserenchimed Purevsuren, Won Man Park, Kyungsoo Kim, Yoon Hyuk Kim, Khuyagbaatar, Batbayar, Purevsuren, Tserenchimed, Park, Won Man, Kim, Kyungsoo, and Kim, Yoon Hyuk

Subjects
LEG physiology, JOINT physiology, KINEMATICS, MECHANICS (Physics), ICE skating
Abstract

In short-track speed skating, the three-dimensional kinematics of the lower extremities during the whole skating cycle have not been studied. Kinematic parameters of the lower extremities during skating are presented as joint angles versus time. However, the angle-time presentation is not sufficient to describe the relationship between multi-joint movement patterns. Thus, angle-angle presentations were developed and used to describe interjoint coordination in sport activities. In this study, 15 professional male skaters' full body motion data were recorded using a wearable motion capture system during short-track speed skating. We investigated the three-dimensional kinematics of the lower extremities and then established the interjoint coordination between hip-knee and knee-ankle for both legs during the whole skating cycle. The results demonstrate the relationship between multi-joint movements during different phases of short-track speed skating. This study provides fundamentals of the movement mechanism of the lower extremities that can be integrated with physiotherapy to improve skating posture and prevent injuries from repetitive stress since physiological characteristics play an important role in skating performance. [ABSTRACT FROM AUTHOR]

Published
2017
Full Text
View/download PDF

127. All-trans retinoic acid-incorporated nanoparticles of deoxycholic acid-conjugated dextran for treatment of CT26 colorectal carcinoma cells

Author

Jeong,Young-Il, Chung,Kyu Don, Kim,Da Hye, Kim,Yoon Hyuk, Lee,Yeon Soo, Choi,Ki Choon, Jeong,Young-Il, Chung,Kyu Don, Kim,Da Hye, Kim,Yoon Hyuk, Lee,Yeon Soo, and Choi,Ki Choon

Abstract

Young Il Jeong,1,* Kyu Don Chung,2,* Da Hye Kim,3 Yoon Hyuk Kim,4 Yeon Soo Lee,5 Ki Choon Choi31Cancer Center, Chonnam National University Hwasun Hospital, Hwasun, South Korea; 2Department of Anesthesiology and Pain Medicine, Catholic University, Seoul, South Korea; 3Grassland and Forage Research Center, Rural Development Administration, Cheonan, South Korea; 4Department of Mechanical Engineering, Kyung Hee University, Seoul, South Korea; 5Department of Biomedical Engineering, Catholic University of Daegu, Daegu, South Korea*These authors equally contributed to this workPurpose: All-trans retinoic acid (RA)-incorporated nanoparticles were prepared using deoxycholic acid-conjugated dextran (DexDA). Anticancer activity of RA-incorporated DexDA nanoparticles were tested in vitro and in vivo.Methods: RA-incorporated nanoparticles were prepared by dialysis. Antiproliferative and anti-invasive potential of RA-incorporated nanoparticles were studied using CT26 colorectal carcinoma cells.Results: RA-incorporated nanoparticles have small particle sizes of around 70–300 nm and spherical shapes. The higher drug-feeding ratio and higher substitution degree of deoxycholic acid in the conjugates resulted in higher drug contents, lower loading efficiency, and larger particle size. RA release rate became slower at higher drug contents and higher substitution degree of deoxycholic acid in the DexDA conjugates. The antiproliferation activity, anti-invasive activity, and matrix metalloproteinase 2 expression of RA-incorporated nanoparticles against CT26 cells in vitro was similar to RA. However, RA-incorporated nanoparticles had superior antimetastatic activity in an animal pulmonary metastatic model of CT26 cells compared to RA itself.Conclusion: RA-incorporated nanoparticles showed similar anticancer activity in vitro and superior antimetastatic activity in vivo in a pulmonary metastatic model of CT26 cells. We suggest that RA-incorporated nanoparticles are promising vehic

Published
2013

Catalog

Books, media, physical & digital resources
See catalog results