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  1. No Access

    Article

    Changes in Spatiotemporal Parameters and Lower Limb Coordination During Prosthetic Gait Training in Unilateral Transfemoral Amputees

    When applying prosthetic gait training to patients with lower limb amputation, monitoring the gait change process is crucial for establishing and modifying rehabilitation training plans. In addition, since hum...

    Yunhee Chang, Chang-Yong Ko, Bora Jeong in International Journal of Precision Enginee… (2022)

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    Article

    Intensive morphometric analysis of enormous alterations in skeletal bone system with micro-CT for AHNAK−/− mice

    AHNAK has been reported to be involved in actin cytoskeleton rearrangement of some cell types, calcium homeostasis, and activation of T cells. Although the functional role of AHNAK in muscle cells, epidermis, ...

    Il Yong Kim, Sun Shin Yi, Jae Hoon Shin, Yo Na Kim in Anatomical Science International (2020)

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    Article

    Development of a Sensor to Measure Stump/Socket Interfacial Shear Stresses in a Lower-Extremity Amputee

    The aim of this study was to develop and validate a sensor to measure interfacial shear forces on the residual limb in the socket of lower-extremity amputees. The sensor consisted of three layers: upper and lo...

    Chang-Yong Ko, Seong Guk Kim, Young Kuen Cho in International Journal of Precision Enginee… (2018)

  4. No Access

    Article

    Variations in gait features in elderly adults during walking considering their balance

    The aim of this study was to evaluate the influence of balance on the spatiotemporal features, lower-limb kinematics, and center of mass (COM) of the non-faller elderly during walking. In this study, 20 healt...

    Hyuk-Jae Choi, Han-Sung Kim, Jeicheong Ryu, Gyoosuk Kim in Biomedical Engineering Letters (2017)

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    Article

    New wearable exoskeleton for gait rehabilitation assistance integrated with mobility system

    Gait and mobility in patients with gait impairment are important in maintaining and improving their physical and psychological health and to return to society. Thus, the aims of the current study were to devel...

    Chang-Yong Ko, JuWon Ko, Hyung Joo Kim in International Journal of Precision Enginee… (2016)

  6. No Access

    Article

    Biomechanical features of level walking by transtibial amputees wearing prosthetic feet with and without adaptive ankles

    This study aimed to evaluate the kinematics and kinetics of the lower limb in both the intact and amputated leg in individuals with transtibial amputations wearing Energy storage and return feet (ESRFs) with f...

    Chang-Yong Ko, Sol-Bi Kim, Jong Kwon Kim in Journal of Mechanical Science and Technolo… (2016)

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    Article

    Enhancement of bone quality and longitudinal growth due to free-fall motion in growing rats

    This study is to investigate the synchronous phenomena between bone quality and longitudinal length in a same subject affected by landing exercise. Physical exercise on the ground induces external loading to h...

    Seungkwan Cho, Sinae Eom, Dong-Hyun Seo, Jihyeong Park in Biomedical Engineering Letters (2015)

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    Article

    Comparison of ankle angle adaptations of prosthetic feet with and without adaptive ankle angle during level ground, ramp, and stair ambulations of a transtibial amputee: A pilot study

    This study aimed to investigate kinetics and kinematics of the ankle joint during level ground, ramp, and stair ambulations using different types of adaptive ankle feet (AAFs), Proprio-FootTM (Össur, IcEland),...

    Chang-Yong Ko, Sol-Bi Kim, Jong Kwon Kim in International Journal of Precision Enginee… (2014)

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    Article

    Deterioration of trabecular bone microarchitecture in the lumbar vertebrae in growing male mice following sciatic neurectomy

    Sciatic nerve injury (SNI) can lead to significant bone loss in the lower extremities. However, the effects of SNI on the lumbar vertebrae are controversial. The present study aimed to evaluate the longitudina...

    Chang-Yong Ko, Young ** Jung in International Journal of Precision Enginee… (2014)

  10. Article

    Erratum to: The effects of minimally invasive laser needle system on suppression of trabecular bone loss induced by skeletal unloading

    Chang-Yong Ko, Heesung Kang, Yeonhang Ryu, Byungjo Jung in Lasers in Medical Science (2013)

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    Article

    The effects of minimally invasive laser needle system on suppression of trabecular bone loss induced by skeletal unloading

    This study was aimed to evaluate the effects of low-level laser therapy (LLLT) in the treatment of trabecular bone loss induced by skeletal unloading. Twelve mice have taken denervation operation. At 2 weeks a...

    Chang-Yong Ko, Heesung Kang, Yeonhang Ryu, Byungjo Jung in Lasers in Medical Science (2013)

  12. No Access

    Article

    A preliminary study of the effects of gait training using powered gait orthosis for paraplegics: Aspects of gait function, fat mass, and bone mass

    The aim of this study was to determine whether gait training using powered gait orthosis (PGO) improved gait function in paraplegics following spinal cord injury (SCI) and whether it suppressed related complic...

    Gyoosuk Kim, Sungjae Kang, Kang Hee Cho in International Journal of Precision Enginee… (2013)

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    Article

    Development of a minimally invasive laser needle system: effects on cortical bone of osteoporotic mice

    Many studies have shown the positive effects of low-level laser therapy in the treatment of bone disease. However, laser radiation is scattered in the skin surface which reduces the initial photon density for ...

    Heesung Kang, Chang-Yong Ko, Yeonhang Ryu, Dong Hyun Seo in Lasers in Medical Science (2012)

  14. No Access

    Article

    Trabecular bone loss in lumbar vertebrae and tibiae following sciatic nerve injury: correlation between baseline bone quantity (BV/TV) and the magnitude and rate of bone loss

    The aim of this study was to determine whether sciatic nerve injury (SNI) can cause trabecular bone loss in not only the tibia, but also the lumbar vertebrae, and to investigate the correlation between baselin...

    Chang-Yong Ko, Young ** Jung in International Journal of Precision Enginee… (2012)

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    Article

    Suggestion of new methodology for evaluation of osseointegration between implant and bone based on μ-CT images

    Osseointegration has been used as an index for prediction of long-term success of implant. Osseointegration has been routinely evaluated by measuring bone contact ratio on histology based on two-dimensional (2...

    Chang-Yong Ko, Dohyung Lim, Byung-Ho Choi in International Journal of Precision Enginee… (2010)

  16. No Access

    Article

    Evaluation of the Potential Clinical Application of Low-Intensity Ultrasound Stimulation for Preventing Osteoporotic Bone Fracture

    This study evaluated the possible clinical application of low-intensity ultrasound (LIUS) stimulation for preventing osteoporotic bone fracture. Eight virgin 14-week-old ICR mice (weight 24.0 ± 0.7 g) were ova...

    Dae Gon Woo, Chang-Yong Ko, Han Sung Kim, Jong Bum Seo in Annals of Biomedical Engineering (2010)