• Journal of the KSME
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• v.55 no.3
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• pp.47-50
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• 2015

이 글에서는 척추 생체역학 연구를 위한 다양한 컴퓨터 시뮬레이션 생체역학 모델을 소개하고, 이를 이용한 척추 퇴행성 질환 관련 임상 및 의료기기 개발 관련 연구 사례들을 소개하고자 한다.

• Journal of the Korean Society for Nondestructive Testing
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• v.31 no.5
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• pp.494-499
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• 2011

This paper presents the biomechanical analysis and evaluation technology of musculoskeletal system by multi-body human dynamic model and 3-D motion capture data. First, medical image based geometric model and material properties of tissue were used to develop the human dynamic model and 3-D motion capture data based motion analysis techniques were develop to quantify the in-vivo joint kinematics, joint moment, joint force, and muscle force. Walking and push-up motion was investigated using the developed model. The present model and technologies would be useful to apply the biomechanical analysis and evaluation of human activities.

• Transactions of the Korean Society of Mechanical Engineers B
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• v.37 no.10
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• pp.953-959
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• 2013

In this study, a multibody dynamic model of the cervical spine was developed for a virtual in-vitro cadaveric experiment. The dynamic cervical spine model was reconstructed based on Korean CT images and the material properties of joints and soft tissue obtained from in-vitro experimental literature. The model was validated by comparing the inter-segmental rotation, multi-segmental rotations, load-displacement behavior, ligament force, and facet contact force with the published in-vitro experimental data. The results from the model were similar to published experimental data. The developed dynamic model of the cervical spine can be useful for injury analysis to predict the loads and deformations of the individual soft-tissue elements as well as for virtual in-vitro cadaveric experiments.

• 전기의세계
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• v.44 no.7
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• pp.9-13
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• 1995

본 원고에서는 생체 운동의 가장 기초가 되는 근육의 역학적 특성과 역학 모델에 관해 이미 개설된 내용에 필자의 생각을 덧붙여 검토하고자 한다.

• Journal of the KSME
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• v.53 no.8
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• pp.28-33
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• 2013

이 글에서는 생체 내 근력과 관절 모멘트, 관절 접촉역학 분석에 이용되는 근골격계 생체역학 모델을 소개하고 그 연구 동향에 대해 소개하고자 한다.

• The Journal of the Korea Contents Association
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• v.9 no.11
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• pp.231-239
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• 2009

The purpose of this study was to investigate changes in balance and upper extremity (UE) function associated with reaching training for children with quadriplegic cerebral palsy based on Biomechanical Frame of Reference. The baseline (phase A) lasted one week. The therapeutic protocol consisted of three reaching training (Phase B) for 40 minutes three times a week. Intervention phases lasted 4 weeks. The CMS-70P (Zebris Medizintechnik Gmbh, Germany) was used to evaluate the qualitative changes in UE function and Pediathc Berg Balance Scale was used to test the balance. The observed performance changes seem to be associated with the presence of intervention and suggest that biomechanical training can be a useful intervention to improve not only manual function but also balance.

• Computational Structural Engineering
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• v.6 no.4
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• pp.5-9
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• 1993

본 논문에서는 생체역학 중 주로 뼈 구조에 유한요소법이 어떻게 사용되고 있는지에 대해 주로 정형외과에서 중요시되는 대퇴부, 요추 등의 예제를 통해 어떻게 모델링되고 있으냐와 유한요소법의 응용분야에 대해 간략히 설명하였다. 물론, 생체역학이라고 하면 허파, 심장 등을 포함하는 순환기, 혈관, 치아 등등 여러 분야를 일컫는 용어로 그 연구분야에 구조공학자의 관심이 필요로 함을 강조하고 싶다. 아울러 유한요소해석 결과에 대해서는 본 논문에서는 언급하지 않았지만 비교적 실험치에 비해 근사함을 여러 문헌을 통해 알 수 있다. 국내에서는 아직도 이 분야에 대한 연구가 매우 미진한 상태이므로 향후 이에 대한 연구가 수행되어야 할 것으로 사료된다.

• Journal of Biomedical Engineering Research
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• v.25 no.4
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• pp.301-307
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• 2004

An inverse dynamic model of lower limbs is presented to calculate joint moments during gait. The model is composed of 4 segments with 3 translational joints and 12 revolute joints. The inverse dynamic method is based on Newton-Euler formalism. Kinematic data are obtained from 3 dimensional trajectories of markers collected by a motion analysis system. External forces applied on the foot are measured synchronously using force plate. The use of developed model makes it possible to calculate joint moments for variation of parameters.

• Journal of Biomedical Engineering Research
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• v.19 no.4
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• pp.423-429
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• 1998

Human pharynx is unique, acting as a complex interchange between the oral cavity and esophagus, and between the nasal cavity and lungs. It is actively involved in the transport of food and liquid, producing the forces that guide that bolus into the upper esophagus and away from the adjacent larynx and lungs. This study intended to develop a biomechanical model of the human pharynx, utilizing Finite Element Method(FEM). Within each model changes in cross sectional intralumenal area were calculated and compared with the area from the computer-generated FE model. Area matching allowed estimation of intraluminal pressure gradients during swallow. The estimated pharyngeal pressure gradient varies from one region to another. The estimated pharyngeal pressure gradients showed different patterns for upper four levels and lower four levels. The contraction velocity for upper four levels is much higher than lower four levels. The higher contraction velocities and pressure gradients in the upper levels are consistent with the bolus velocities required for efficient swallow.

• Journal of Biomedical Engineering Research
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• v.24 no.6 s.81
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• pp.495-500
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• 2003

The purpose of this investigation was to study the kinematics of joints between the foot segments based on computer graphic model during the stance? phase of walking. In the model, all joints were assumed to act as monocentric. single degree of freedom hinge joints. The motion of foot was captured by a video collection system using four cameras. The model fitted in an individual subject was simulated with this motion data. The range of motion of the first tarsometatarsal joint was $-8^{\circ}\;\~\;-13^{\circ}$, and the first metatarsophanlangeal joint was $-13^{\circ}\;\~\;-48^{\circ}$. The kinematic data of tarsometatarsal joint and metatarsophanlangeal joint were similar to the previous data. Therefore, our method based on the graphical computer model is considered useful.