전방 십자인대 재재건술의 분석

박찬희,송은규,선종근,임지현,강경도,이태민,Park, Chan-Hee,Song, Eun-Kyoo,Seon, Jong-Keun,Yim, Ji-Heoun,Kang, Kyung-Do,Lee, Tae-Min 대한정형외과스포츠의학회 2011 대한정형외과스포츠의학회지 Vol.10 No.2

목적: 전방십자인대 재건술의 수가 증가하면서, 재건술의 실패로 인한 재재건술의 빈도 또한 증가하고 있다. 따라서 저자는 전방십자인대 재건술 후 발생한 이식건 실패의 원인 및 전방십자인대 재재건술 후의 임상적 결과를 분석하였다. 대상 및 방법: 1998년 2월부터 2010년 7월까지 전방십자인대 재건술 실패에 대하여 전방십자인대 재재건술을 시술받은 후 최소 12개월 이상 추시가 가능하였던 36예를 대상으로 하였다. 재건술 후 재재건술까지의 평균기간은 60(5~334)개월이었으며, 처음 전방십자인대 재건술을 시술 시 23예(63.9%)에서 동종 이식건을, 13예(36.1%)에서 자가 이식건을 사용하였다. 전방십자인대 재건술 실패의 주증상으로 불안정성이 가장 많았으며, 전방십자인대 재건술을 한번 시행 받았던 경우가 35예(97.5%), 두 번 시행 받았던 경우가 1예(2.5%)였다. 임상적 결과는 Lysholm 슬관절 점수, Tegner activity 점수를 이용하여 평가하였으며, 안정성은 Lachman 및 pivot shift 검사와 Telos device를 이용하여 평가하였다. 결과: 환자의 평균 추시 기간은 21(12~40)개월이었으며, 전방십자인대 재건술의 실패원인으로는 외상이 19예(52.8%)로 가장 많았고, 대퇴 터널의 부정위치가 13예(36.1%), 경골부 터널의 부정위치가 1예(2.8%), 골융합의 실패 3예(8.4%)로 나타났다. 전방십자인대 재재건술을 시행할 시 34예(94%)에서 동종이식건을, 2예(6%)에서 자가 이식건을 사용하였으며, 21예에서 반월상 연골판 손상이 동반되었다(내측 반월상 연골판 손상 14예, 외측 반월상 연골판 손상 7예). Lysholm 슬관절 점수는 술전 66.5점에서 술후 최종 추시시 92점으로 호전되었다(p<0.01). 환자의 대부분은 수술 결과에 만족(92%)하고 있었다. Tegner activity 점수는 술전 2.0점에서 술후 6.2점으로 호전되었다(p<0.01). Lachman 및 pivot shift 검사에서 33예, 30예가 Gr I 이하로 호전되었으며, Telos device를 이용한 안정성 검사에서는 양측 차이 정도는 술전 평균 15.5 mm에서 술후 최종 추시시 4.5 mm로 의미있게 호전되었다(p<0.01). 환자의 대부분은 수술 결과에 만족(92%)하고 있었다. 결론: 전방십자인대 재 재건술은 1년 이상 추시 결과 약간의 전방 불안정성이 존재하였으나, 임상적 결과 및 환자의 주관적 만족도에 있어서는 우수한 결과를 보였다. Purpose: As the number of the anterior cruciate ligament (ACL) reconstruction has increased, the incidence of revision of ACL reconstruction due to reconstruction failure has been also increased. Therefore, authors analyzed the reason of the failure of ACL reconstruction and the clinical result of the ACL revision. Materials and methods: From February 1998 to July 2010, we selected 36 cases which was followed at least 12months after the ACL reconstruction failure. Duration from reconstruction to revision, the average duration was 60 months (5~334) and on first reconstruction, we used allograft on 23 cases (63.9%) and autograft on 13 cases (36.1%). For the main symptom of ACL reconstruction failure, instability was the most common symptom, and 35 cases (97.5%) were undergone only one reconstruction and 1case (2.5%) was undergone two reconstruction. Clinical results were evaluated by Lysholm knee joint score, pivot shift test, and Telos device. Results: Average follow-up duration of the patients was 21 months (12~40), and the reason for the ACL reconstruction failure, trauma was most common by 19 cases (52.8%), malposition of the femoral tunnel was 13 cases (36.1%), malposition of the tibia tunnel was 1case (2.8%), and failure of osteointegration was 3 cases (8.4%). On performing the ACL revision, we used allograft on 34 cases (94%) and autograft on 2 cases (6%), and 21 cases accompanied injury of the meniscus (medial meniscus 14 cases, lateral meniscus 7 cases). Lysholm knee joint score was improved from 66.5 points, preoperatively to 92 points on last follow-up (p<0.01). In most cases, patients were satisfied (92%) with the operation results. Tegner activity score was also improved from 2.0 points preoperatively to 6.2 points on the last follow-up. On Lachman and pivot sift test, 33 cases and 30 cases were improved to grade I respectively, and on stability test using Telos device, the bilateral difference was improved from mean 15.5 mm preoperatively to 4.5 mm on the last follow-up. Conclusion: After 1 year follow-up, Revision of ACL had a little anterior instability but it showed satisfactory result on clinical result and patient's subjective satisfaction.

어깨 불안정성환자에게 각도에 따른 슬링 운동이 앞톱니근의 근 활성도 변화

박찬희,Park, Chan-hee 대한정형도수물리치료학회 2021 대한정형도수물리치료학회지 Vol.27 No.1

Background: The serratus anterior and upper trapezius muscles act synergistically to allow for an appropriate scapulothoracic rhythm. However, a decrease in serratus anterior activation causes the upper trapezius to become overactivated, resulting in dysfunction. This study compared serratus anterior and upper trapezius muscle activity according to sling angle and compared serratus anterior strength between healthy adults and patients with shoulder instability. Methods: Twenty participants (10 healthy adults and 10 patients with shoulder instability) were included in this study. The participants had their arms extended at sling angles of 30°, 60°, and 90° in reach forward with shoulder flexion using goniometer. Serratus anterior strength was measured three times while the participants were supine. The outcome measures were surface electromyography amplitude of the upper trapezius and serratus anterior and serratus anterior strength. Results: The Wilcoxon signed-rank test indicated that the upper trapezius was significantly different between healthy group and shoulder instability group at a sling angle of 60°, and both the upper trapezius and serratus anterior exhibited significant differences at 90°. Moreover, a significant difference was noted in the muscle strength of the serratus anterior. Conclusion: Our results provide novel and promising clinical evidence that patients with shoulder instability have decreased serratus anterior activation and upper trapezius overactivation, resulting in muscle imbalance. In addition, there was a significant difference between the healthy group and shoulder instability group in the serratus anterior muscle strength

등척성 목 폄 시 만성 목 통증이 있는 환자와 정상인 간의 근육 피로도, 근력 및 지구력 비교

박찬희,Park, Chan-hee 대한정형도수물리치료학회 2021 대한정형도수물리치료학회지 Vol.27 No.2

Background: Chronic neck pain (CNP) is associated with weakness in the deep neck flexor muscles, a shortening of the neck extensors, and a reduction in endurance. In addition, muscle imbalance can lead to neck pain and musculoskeletal dysfunction. This study compared neck extensor muscle fatigue, muscle strength, and muscle endurance time between patients with CNP and healthy adults during isometric neck extension. Methods: Thirty participants (15 patients with CNP and 15 healthy adults) were recruited in this research. The outcome measures included splenius capitis (SC) muscle fatigue, isometric neck extensor strength, and muscle endurance. The independent T-test was used to compare the continuous dependent variables between the CNP group and the healthy group. Results: The independent T-test indicated that muscle fatigue in the left SC differed significantly between the CNP group and the healthy group. A significant difference was also noted in the isometric neck extensor and neck extensor strength between the groups. Conclusion: Our results provided promising clinical evidence that patients with CLP have reduced neck extensor strength and endurance and increased SC muscle fatigue, which results in neck pain.

유지관리 저감 무도장 교량용내후성강 적용 교량

박찬희(Park, Chan-Hee),성택룡(Seong, Taek-Ryong),안기성(Ahn, Ki-Sung) 대한토목학회 2018 대한토목학회 학술대회 Vol.2018 No.10

군 골프장의 민간개방에 따른 내부 마케팅 및 고객 서비스 전략모형 검증

박찬희(Park, Chan-Hee),손승범(Son, Seung-Bum),이태호(Lee, Tae-Ho) 한국체육과학회 2014 한국체육과학회지 Vol.23 No.3

This study was to examine of internal marketing and customer service strategy model follow open to public of the military golf clubs. The 300 employees of the militmy golf clubs were selected by using convenience sampling method and 263 of them were chosen as for final data analysis. As for statistical method, conducted frequency, reliability and correlation analysis. And the following result came out using SPSS 20.0 and LISREL 8.3 and investigating confirmatory factor analysis and structural equation modeling. The result of the study were as follows. First, structural model of this study was suitable to explain internal marketing and customer service strategy on opening the military golf clubs to public. Second, internal marketing to military golf clubs employees was proved to be a most influencing to the job satisfaction but job commitment and customer orientation were not effected directly. Third, job satisfaction of military golf clubs employees had influence moderately on job commitment but customer orientation were not effected directly. Fourth, job commitment of military golf clubs employees had influence greatly on customer orientation. Fifth. the result of direct and indirect effect among 3 factors, indirect effect that job satisfaction and commitment had on internal marketing factor were more greater than direct effect that job commitment and customer orientation had on. And then indirect effect that job satisfaction and commitment had on internal marketing factor were more greater.

중년 여성의 안면 피부 노화 인식이 건강 증진 행위에 미치는 영향

박찬희 ( Chan Hee Park ),임은진 ( Eun Jin Im ) 대한미용학회 2021 대한미용학회지 Vol.17 No.3

Management of physical appearance has been recognized to influence psychological satisfaction and happiness both directly and indirectly by enhancing the quality of life of middle-aged women. The present study aimed to determine whether there is any need for development of beauty programs for middle-aged women. To this end, the effect of the middle-aged women’s perception of facial skin aging on their health-promoting behaviors was investigated. A survey was conducted using a self-administered questionnaire distributed via both off-line and on-line to female adults aged between 40 and 59 years and living in Seoul and Gyeonggi-do in 2020. The collected data were analyzed using SPSS version 21.0. Frequency, reliability and validity, and correlation were determined to identify the relationship between the variables. The results obtained are as follows. Based on the perception of facial skin aging, the respondents had a high awareness on aging-related factors, including smoking, decline of female hormones and excessive diet. Most middle-aged women had a high level of perception of facial skin aging. In the analysis of the correlation of the middle-aged women’s perception on facial skin aging with health-promoting behaviors, the preception of facial skin aging had a significantly positive correlation with health-promoting behaviors. Furthermore, the perception of face aging was found to be positively correlated with the sub-scales of health- promoting behaviors, such as self-realization, health responsibility, exercise, nutrition, interpersonal relationships, stress management, and proactive self-management. Since the importance of the middle-aged women’s roles have been underscored more than ever in today's rapidly changing society, a wide variety of efforts need to be exerted to develop anti-aging programs and related educational programs so that the middle-aged women can serve their roles by maintaining a healthier and happier life.

다양한 운행 환경에 적용 가능한 철도차량 현가장치 고장 진단

박찬희(Chan Hee Park),이준민(Junmin Lee),김수호(Sooho Kim),이동기(Dong-Ki Lee),나규민(Kyumin Na),송주환(Joowhan Song),윤병동(Byeng D. Youn) 대한기계학회 2018 대한기계학회 춘추학술대회 Vol.2018 No.12

This research focused on introducing a hybrid method to identify the damper failures on rail vehicle suspensions using some spectral information. The investigated system has been announced at a competition named as 2017 Data Challenge organized by prognostics and health management (PHM) society, and there were three kinds of variations that the failure detection method should consider; (1) payload, (2) speed and, (3) track. Due to the different operating conditions with no failure data of the system, two methods, which could be represented by data-driven and physics based approach, have been aggregated. First, a data-driven approach, targeting the different payload and speed conditions, was introduced which computes root mean square error (RMSE) between training data set and validation data set at all the sensors. Second, the ensemble method, which integrates physical model estimating the system parameters (SPE) and Pearson correlation coefficient (PCC) based approach, was developed for the different track condition. The result from the proposed method was led to the third prize in 2017 Data Challenge. Although the result could be improved if more information of the system is provided, this study could give a general methodology of diagnosing failures in the bogie car suspensions.

RFID 기반의 유비쿼터스 응용을 위한 RFID 객체정보 관리 시스템 설계 및 개발

박찬희 ( Chan-hee Park ),김학수 ( Hak Soo Kim ),최윤호 ( Yun Ho Choi ),김종진 ( Jong Jin Kim ),신영재 ( Youngjae Shin ),김재형 ( Jae Hyung Kim ),손진현 ( Jin Hyun Son ) 한국정보처리학회 2007 한국정보처리학회 학술대회논문집 Vol.14 No.1

최근, RFID 기술이 발전하면서 RFID의 활용분야는 유통·물류 시스템 중심에서 로봇이나 홈 네트워크 시스템과 같은 다양한 분야로 확대되고 있다. 이는, RFID태그와 RFID리더를 사용하여 객체의 정보를 빠르고 정확하게 검색 할 수 있기 때문이며, 이에 따라 RFID 네트워크를 이용하는 시스템의 효과적인 객체정보 추출을 위한 연구가 활발히 진행되어 왔다. 이와 관련하여, 본 논문에서는 RFID를 이용하는 시스템의 효과적인 객체정보 관리 시스템을 설계하고 개발하였다. 이는 RFID 네트워크 외부에 존재하는 RFID 게이트웨이와 RFID 네트워크를 구성하는 어플리케이션 서버, 변환 서버, 객체정보 서버로 구성된다.

CIPP 모형을 활용한 그린캠프 평가지표 연구

박찬희(Chan Hee Park) 한국콘텐츠학회 2020 한국콘텐츠학회논문지 Vol.20 No.3

연구 목적은 군 교육 프로그램인 그린캠프를 평가할 수 있는 평가지표를 개발하는 것이다. 이러한 목적으로 CIPP 평가모형을 활용하여 평가지표 개발과정을 단계화해서 진행한 연구의 결과를 요약하면 아래와 같다. 첫째, 프로그램 평가 관련 문헌연구, 그린캠프 현장 실태 조사, 전문가 토의를 통해 평가 고려요소를 도출하고 CIPP 평가모형 4개 영역의 예비 평가영역과 항목을 구성하였다. 둘째, 예비 평가항목으로 1차 설문을 수도방위사령부 그린캠프와 장병을 대상으로 조사하여 예비 신뢰도ㆍ타당도를 검사하고, 전문가 포커스 그룹 토의로 평가지표를 보완하였다. 셋째, 강원도 지역 4개 대대를 방문하여 2차 설문 조사하고, 12개 군단별 간부와 그린캠프 관련자를 대상으로 3차 조사하여 SPSS 24 통계 프로그램으로 기술통계 분석, 탐색적 요인 분석, 상관관계 분석으로 검증하였다. 넷째, 타당도 검증을 거쳐 16개 평가영역과 36개 평가지표를 결정하였다. 다섯째, 개발한 36개 평가지표를 57개 지표로 세분하고 정책전문가로 델파이 조사하여 43개 지표로 일반화하였다. 이 단계화된 연구의 의의는 정책 시행ㆍ추진과정에서 과학적 평가(지표) 개발 및 제도화에 활용될 수 있을 것이다. The purpose of this study is to develop an evaluation index that can assess the Army training program of Green Camp. The result of the evaluation index phased-developed with the CIPP model is summarized below. First, the literature review with documents relevant to program evaluation, Green Camp field research, and expert discussions were used to select factors considered for evaluation and develop a preliminary evaluation area and item for the four areas within the CIPP evaluation model. Second, an initial survey targeting Green Camp and soldiers in the Capital Defense Command examined the preliminary reliability ㆍvalidity, and the Focused Group discussions were used to supplement the evaluation index. Third, secondary surveys were conducted in four battalions in Gangwon-do and third surveys targeted officers from twelve different corps and personnels related to the Green Camp which verified descriptive statistics analysis, exploratory factor analysis, and correlation analysis in version SPSS 24. Fourth, with the validation verification procedure, 16 evaluation area and 36 evaluation index was confirmed. Fifth, the 36 evaluation index developed was subdivided into 57 indexes and the Delphi method was applied through the policy expert to formulate 43 generalized indexes. The significance of this phased research approach was considered for the institutionalization of the usage of scientific evaluation(index) and development in policy process.

벤 다이어그램을 활용한 연역추론 지도가청각장애학생의 추론적 이해에 미치는 효과

박찬희 ( Chan Hee Park ),최성규 ( Sung Kyu Choi ) 한국특수아동학회 2014 특수아동교육연구 Vol.16 No.4

이 연구는 벤 다이어그램을 활용한 연역추론 지도가 청각장애학생의 추론적 이해에 미치는 영향을 알아보고자 하였다. 이를 위하여 초등학교 5학년과 6학년 청각장애학생 6명을 대상으로 2013년 12월부터 2014년 2월까지 약 3개월간 벤 다이어그램을 활용한 연역추론지도를 실시하였으며, 반복측정을 통하여 벤 다이어그램을 활용한 연역추론지도가 추론적 이해에 미치는 영향을 분석하였다. 연구의 결과는 다음과 같다. 첫째, 벤 다이어그램을 활용한 연역추론지도는 청각장애학생의 정언삼단논법 이해력 향상에 효과적이었다. 둘째, 벤 다이어그램을 활용한 연역추론지도는 청각장애학생의 가언삼다논법 이해력 향상에 효과적이었다. 이상의 결과들을 통하여 결론적으로 이 연구에서는 벤 다이어그램을 활용한 연역추론 지도가 청각장애학생의 추론적 이해력을 향상시키는 계기를 제공하였음을 알 수 있다. 또한 체계적이고 조직적인 전략으로 구성된 벤 다이어그램을 활용한 연역추론 지도 전략은 청각장애학생의 추론적 이해력에 긍정적인 영향을 미치는 주요 요인이 되고 있음을 이 연구에서는 시사하고 있다. Thought and language are interaction. Because of hearing impairment the students had limited development in the area of thought. The purpose of this study was to illustrate the effects on the reasoning skill with Venn diagram to improve the inference knowledge of the students who were hearing impairment. Six hearing impaired students were participated for this study. The repeated measurement experimental design was designed for this study. The results of this study was that: (a) Venn diagram to teach the categorial syllogism was effect to understand the sentence of the categorial syllogism to hearing impaired students. And Venn diagram to teach the hypothesis deduction was effective to realize the sentence of the hypothesis syllogism; and (b) Venn diagram to teach the categorial syllogism was main factor to give interests to hearing impaired students. Therefore this study concluded that the Venn diagram method was effective to teach the thought ability in deduction reasoning of the hearing impaired students.