• 한국표면공학회:학술대회논문집
• /
• 한국표면공학회 1998년도 춘계학술발표회 초록집
• /
• pp.71-72
• /
• 1998

• 대한정형도수물리치료학회지
• /
• 제13권2호
• /
• pp.55-68
• /
• 2007

Object: to evaluate the effects of two different treatments-joint mobilization and therapeutic exercise on difference for length of lower limbs. Method: The subjects were participated twenty six who has difference for length of lower limbs more 10mm. All subjects randomly assigned to Joint mobilization group(n=13) and therapeutic exercise group. Joint mobilization group received joint mobilization for 2 minutes, Therapeutic exercise group received for 15 minutes per day and 3 times a week during 4 week period. Tape measure method was used to measure the difference for length of lower limbs. Biodex was used to measure the muscle power of lower limbs(Knee flexion, extension). Finger to floor test was used to measure the mobility of spinal column. All measurement of each subjects were measured at pre-experiment, after 2weeks and post-experiment. Result: The result of this study were summarized as follows : 1. Both treatment decreased difference for length of lower limbs while joint mobilization more decreased difference for length of lower limbs than therapeutic exercise. 2. Both treatment increased mobility of spinal column while joint mobilization more increased mobility of spinal column than therapeutic exercise. 3. Joint mobilization increased muscle power while therapeutic exercise decreased muscle power. Conclusion: in a group-wise comparison joint mobilization is more effective than therapeutic exercise.

• 한국임상수의학회지
• /
• 제31권2호
• /
• pp.125-128
• /
• 2014

38 kg, 7년령의 골든리트리버가 대퇴관절 탈구증으로 의뢰되었다. 신체검사에서는 왼쪽 뒷다리를 신전시킬 때 통증과 염발음이 확인되었다. 방사선 검사를 통해 왼쪽 대퇴관절 탈구증 및 경도의 퇴행성 골변화가 관찰되었다. 치료로서 TightRope$^{(R)}$를 이용한 최소침습 관절경적 정복을 하였으나, 수술 후 한달이 지나 재탈구가 발생하였다. 이에 대해 무시멘트형 대퇴관절 전치환술을 실시하였다. 수술 후 10개월 경과된 결과, 환자는 정상적으로 앉기, 서기, 보행을 보였으며, 특이한 파행없이 편안하게 뛸 수 있었다. 수술한 뒷다리의 허벅지둘레는 반대쪽 다리의 그것에 비해 108.6%였다. 이 증례를 통해 대퇴관절 전치환술은 대퇴관절 정복이 실패하여 재탈구된 개의 대퇴관절 탈구 치료에 효과적인 수술법이 될 수 있다.

• 한국운동역학회지
• /
• 제31권3호
• /
• pp.183-188
• /
• 2021

Objective: The purpose of this study was to develop a stretchable joint motion sensor that is based on silver nano-particle. Through this sensor, it can be utilized as an equipment for rehabilitation and analyze joint movement. Method: In this study, precursor solution was created, after that, nozel printer (Musashi, Image master 350PC) was used to print on a circuit board. Sourcemeter (Keithley, Keithley-2450) was used in order to evaluate changes of electric resistance as the sensor stretches. In addition, the sensor was attached on center of a knee joint to 2 male adults, and performed knee flexion-extension in order to evaluate accurate analysis; 3 infrared cameras (100 Hz, Motion Master 100, Visol Inc., Korea) were also used to analyze three dimensional movement. Descriptive statistics were suggested for comparing each accuracy of measurement variables of joint motions with the sensor and 3D motions. Results: The change of electric resistance of the sensor indicated multiple of 30 times from initial value in 50% of elongation and the value of electric resistance were distinctively classified by following 10%, 20%, 30%, 40% of elongation respectively. Through using the sensor and 3D camera to analyze movement variable, it showed a resistance of 99% in a knee joint extension, whereas, it indicated about 80% in flexion phase. Conclusion: In this research, the stretchable joint motion sensor was created based on silver nanoparticle that has high conductivity. If the sensor stretches, the distance between nanoparticles recede which lead gradual disconnection of an electric circuit and to have increment of electric resistance. Through evaluating angle of knee joints with observation of sensor's electric resistance, it showed similar a result and propensity from 3D motion analysis. However, unstable electric resistance of the stretchable sensor was observed when it stretches to maximum length, or went through numerous joint movements. Therefore, the sensor need complement that requires stability when it comes to measuring motions in any condition.

• 대한치과교정학회지
• /
• 제49권2호
• /
• pp.81-88
• /
• 2019

Objective: The aim was to assess the intraobserver and interobserver reliabilities of temporomandibular joint linear measurements and condylar shape classifications performed with cone-beam computed tomography (CBCT). Methods: CBCT images of 30 patients were measured at two different time points by two orthodontists using the Dolphin 3D program (n = 60). Anterior, posterior, and superior joint space measurements and sagittal joint morphology classification in the sagittal view and medial and lateral joint space and mediolateral width measurements and coronal joint morphology classification in the coronal view were recorded. Intraclass-interclass correlation coefficients (ICC) and kappa statistics were used to assess intraobserver and interobserver reliability for the measurements and morphology classifications, respectively. Results: The ICC values were good for measurements of the posterior joint space by observer I and for measurements of the posterior, medial, and lateral joint spaces by observer II, while the other intraobserver measurements were excellent. Only the mediolateral width measurements showed excellent interobserver ICC values, while the other measurements showed good interobserver ICC values. Intraobserver agreement for the sagittal morphology classifications was moderate (${\kappa}=0.479$) and almost perfect (${\kappa}=0.858$) for observers I and II, respectively, while the corresponding agreement for the coronal morphology classifications was substantial for both observers. The interobserver agreement values for sagittal and coronal morphology classifications were slight (${\kappa}=0.181$) and fair (${\kappa}=0.265$), respectively. Conclusions: Linear temporomandibular joint measurements were reproducible and reliable in both intraobserver and interobserver evaluations. However, interobserver agreement for assessments of condylar shape was low.

• 턱관절균형의학회지
• /
• 제12권1호
• /
• pp.1-6
• /
• 2022

Objectives: For the deviation phenomenon occurring during the treatment process in temporo-mandibular balancing medicine (TBM), hypotheses were established regarding the cause and mechanism of formation from the perspective of neuro-science and material mechanics, and a verification method was proposed. Methods: The deviation phenomenon was theoretically analyzed based on the structure theories of material mechanics of the joint and the neurological pain mechanism. Results: Deviation occurs due to temporary yield by the accumulation of heterogeneous stress in the temporo-mandibular joint and the affected joint. Because the joint structures are corresponding with material mechanics showing compressive and tensile properties. The size of the deviation is expressed in terms of strain. The occlusal surface of the teeth is level with the axial joint. Since the magnitude of the deviation has a proportional relationship with the degree of abnormality of the temporo-mandibular joint, the magnitude of the deviation calculated by the balance measurement can be replaced by the strain. The major variables involved in the occurrence of deviations are the strength of joint structures and neurological conditions. Therefore plastic deformation and adaptation occur as a long-term depression of neural circuits is strengthened in different ways at different locations each time in various clinical situations. This is the reason why the sequence of the restoration process while correcting deviations is following reverse order of the accumulation in many layers in the muscular nervous system. Conclusions: From the above results, it can be inferred that the occurrence and correction of the deviations are corresponding with the plastic deformation and neuro-plasticity.

• 대한전기학회논문지:시스템및제어부문D
• /
• 제51권8호
• /
• pp.374-379
• /
• 2002

In this study, we developed a new human arm movement detection system using electrical bio-impedance method with several skin-electrodes. The correlation coefficients of the joint angle and the impedance change from human arm movement was obtained using a goniometer and impedance measurement system developed in this study. The correlation coefficients of the wrist and the elbow movements were 0.94 and -0.99, respectively. This system was applied to control a robotic arm by converting the measured impedance to joint angle to confirm the validity of the proposed system. In conclusion, we confirmed that this system can control the robotic arm according to arm movement without any limitation of movement. This system showed possibility that upper arm movement could be easily measured by impedance measurement system with a few skin-electrodes.

• 근관절건강학회지
• /
• 제24권3호
• /
• pp.196-204
• /
• 2017

Purpose: This study was conducted to explore the mediating effect of resilience in the relationship between stress and therapeutic compliance in patients with systemic lupus erythematosus. Methods: The subject (N=145) was a systemic lupus erythematosus patient who visited the D Hospital in B city. Data collection was conducted from January 2016 to August 2016. Twenty-five resilience measurement tools, 20 stress measurement tools, 39 therapeutic compliance measurement tools used to measure resilience, stress and therapeutic compliance levels. The collected data were analyzed using descriptive analysis, Pearson correlation, 3-step regression analysis of Baron and Kenny, and Sobel test in SPSS/WIN 21.0. Results: There was a significant negative correlation between stress and therapeutic compliance, a significant negative correlation between stress and resilience, and significant positive correlation between resilience and therapeutic compliance. Resilience showed a direct effect on therapeutic compliance through stress as a mediating variable. Conclusion: It is necessary to develop appropriate resilience enhancement program to improve therapeutic compliance with systemic lupus erythematosus.

• 한국정밀공학회지
• /
• 제14권4호
• /
• pp.64-71
• /
• 1997

Objective of calibration is to find out the accurate kinematic relationships between robot joint angles and the position of the end-effector by estimating accurate model parameters defining the kinematic function. Estimating the model parameters requires measurement of the end-effector position at a number of different robot configurations. This paper studies the implication of measurement configurations in robot calibration. For selecting appropriate measurement configurations in robot calibration, an index is defined to measure the observability of the model parameters with respect to a set of robot configurations. It is found that, as the observability index of the selected measurement configurations increase the attribution of the position errors to the parameter errors becomes dominant while the effects of the measurement and unmodeled errors are less significant; consequently better estimation of parameter errors is expected. To demonstrate the implication of the observability measure in robot calibration, computer simulations are performed and their results are discussed.

• 비파괴검사학회지
• /
• 제30권2호
• /
• pp.104-109
• /
• 2010

겹치기 마찰교반용접은 새로운 고상접합법이다. 알루미늄 합금 6061-T6는 좋은 내식성과 중량 대비 높은 기계적 강도로 인해 넓은 분야에서 경량부재로 사용되고 있다. 본 논문에서 사용한 검사 방법인 위상잠금 초음파 적외선열화상기법은 넓은 면적을 동시에 검사할 수 있으며, 결함부와 건전부 사이의 위상차로부터 결함의 유무를 판단할 수 있다. 본고의 연구로부터, 위상잠금 적외선열화상기술을 이용하여 용접부의 열영상을 검출하여 기계적 강도와 비교 평가하였다.