Mid-term Clinical and Radiological Outcomes of Latissimus Dorsi Tendon Transfer in Massive Rotator Cuff Tears

Dongwhan Suh,지종훈,Kirtan Tankshali,Eung-Sic Kim 대한견주관절학회 2019 대한견주관절학회지 Vol.22 No.4

Background: This retrospective study was undertaken to evaluate mid-term clinical and radiological outcomes of lattisimus dorsi (LD) tendon transfer in patients with irreparable massive rotator cuff tears (MRCT). We hypothesize that LD tendon transfer would provide safe and satisfactory clinical outcomes at mid-term follow-up. Methods: From November 2008 to December 2016, 23 patients (57.5 ± 4.4 years; 20 male, 3 female) who underwent LD tendon transfer for massive tears, were enrolled. Inclusion criteria were irreparable MRCT. Exclusion criteria included full thickness subscapularis tear, rotator cuff arthropathy, anterosuperior rotator cuff tear, and osteoarthritis. Mean follow-up period was 4.7 ± 4.0 years (range, 2–12 years). Clinical assessment (American Shoulder and Elbow Surgeons [ASES], University of California, Los Angeles [UCLA], Simple Shoulder Test [SST]) and radiographic assessment (osteoarthritis [OA], acromiohumeral distance [AHI]) were evaluated. Results: ASES, UCLA and SST scores, and range of motion (ROM), except internal rotation, improved significantly at the last follow-up (p<0.05). Also, AHI was significantly improved at the last follow-up, from 6.6 mm to 8.2 mm (p=0.008). At the final follow-up, the radiologic stages of the glenohumeral osteoarthritis were determined as stage 1 in 9 patients, stage 2 in 10 patients, stage 3 in 2 patients, and stage 4 in 2 patients. Complications were observed in 21.7% cases: 3 re-tears and 2 infections were noted in our study. Conclusions: LD tendon transfer for irreparable MRCT provides satisfactory clinical outcomes at mid-term follow-up. Mild degenerative osteoarthritis (stage 1, 2) of the shoulder joint are common at the mid-term follow-up. Also, complications such as tear, infection should be considered.

Endovascular Treatment in Patients with Cerebral Artery Occlusion of Three Different Etiologies

Dongwhane Lee,Deok Hee Lee,Dae Chul Suh,Bum Joon Kim,Sun U. Kwon,Hyuk Sung Kwon,Ji-Sung Lee,Jong S. Kim 대한뇌졸중학회 2020 Journal of stroke Vol.22 No.2

Background and Purpose The outcome of endovascular treatment (EVT) may differ depending on the etiology of arterial occlusion. This study aimed to assess the differences in EVT outcomes in patients with intracranial arterial steno-occlusion (ICAS-O), artery-to-artery embolism (AT-O), and cardiac embolism (CA-O). Methods We retrospectively analyzed 330 patients with ischemic stroke who underwent EVT between January 2012 and August 2017. Patients were classified according to the etiology. The clinical data, EVT-related factors, and clinical outcomes were compared. The modified Rankin Scale (mRS) score at 3 months, determined using ordinal logistic regression (shift analysis), was the primary outcome. Results CA-O (n=149) was the most common etiology, followed by ICAS-O (n=63) and AT-O (n=49). Age, initial National Institutes of Health Stroke Scale (NIHSS) score, and rate of hemorrhagic transformation were significantly higher in patients with CA-O compared to AT-O and ICAS-O. The time from onset-to-recanalization was the shortest in the CA-O (356.0 minutes) groups, followed by the AT-O (847.0 minutes) and ICAS-O (944.0 minutes) groups. The rates of successful recanalization, mRS distribution, and favorable outcomes at 3 months (mRS 0–2; CA-O, 36.9%, AT-O, 53.1%; and ICAS-O, 41.3%) did not differ among the three groups. Baseline NIHSS score (odds ratio, 0.87; 95% confidence interval, 0.83 to 0.91) could independently predict a favorable shift in mRS distribution. Conclusions The functional outcomes of ICAS-O and AT-O were similar to those of CA-O, despite the delay in symptom onset-to-recanalization, suggesting that the therapeutic time window may be extended in these patients.

원위 경골 골절에서 전외측 잠김 금속판을 사용한 전외측 최소 침습적 금속판 고정술

서동환,이환희,한영훈,정재중,Suh, Dongwhan,Lee, Hwan Hee,Han, Young Hoon,Jeong, Jae Jung 대한족부족관절학회 2020 대한족부족관절학회지 Vol.24 No.1

Purpose: Anterolateral minimally invasive plate osteosynthesis (MIPO) was performed to treat patients with distal tibial fractures associated with open fractures or extensive soft tissue injuries, which is limited medial MIPO. The treatment results of the anterolateral MIPO technique were evaluated and analyzed. Materials and Methods: Seventeen patients with distal tibial fractures associated with an open fracture or large bullae formation on the distal tibia medial side were treated with anterolateral MIPO using anterolateral locking plates. Within 24 hours of visiting the emergency room, external fixation was applied, and the medial side wound was managed. After damage control, the anterolateral locking plate was applied using an anterolateral MIPO technique. The union time, nonunion, or malunion were evaluated with regular postoperative radiographs. The ankle range of motion, operative time, blood loss, Iowa score, and wound complications were investigated. Results: Radiological evidence of bony union was obtained in all cases. The mean time to union was 16.7 weeks (12~25 weeks). The mean operation time was 44.0 minutes. Regarding the ankle range of motion, the mean dorsiflexion was 15°, and the mean plantarflexion was 35°. Satisfactory results were obtained in 15 out of 17 cases; five results were classified as excellent, four were good, and six were fair. The mean blood loss was 125.2 mL. Two complications were recorded. Conclusion: In distal tibial fractures with severe medial soft tissue damage caused by high-energy trauma, the staged anterolateral MIPO technique using anterolateral locking plates is a useful alternative treatment to achieving optimal wound care, rapid union with biological fixation, and intra-articular reduction.

아바타의 이동에 따른 게임 공간의 변화와 여정

최순욱(Soonwook, Choi),김동환(Dongwhan, Kim),최진한(Jinhan Choi),서민향(Minhyang Suh),이준환(Joonwhan, Lee) 사이버커뮤니케이션학회 2015 사이버 커뮤니케이션 학보 Vol.32 No.1

컴퓨터 게임에서 아바타(게임 캐릭터)는 가상 세계에 머무르며 시간에 흐름에 따라 다양한 행위를 한다. 따라서 시간성과 공간성은 게임 플레이 또는 내러티브를 구성하는 두 축이 되며, 이 둘은 서로 연계되어 있기 때문에 게임 세계도 시간에 따라 변화할 수 있다. 이런 변화를 일으키는 것은 바로 ‘이동(움직임)’이라는 아바타의 ‘일상적 실천(the practice of everyday life)’이다. 본 연구에서는 이동을 통한 ‘공간으로의 장소 전유’와 ‘여정(tour)’에 대한 드 세르토의 논의를 바탕으로, MMORPG ‘월드 오브 워크래프트(World of Warcraft)’의 아바타 이동 데이터를 두 가지 방법으로 시각화했다. 카토그램(Cartogram)으로는 아바타들의 게임 세계 속 움직임에 따라 장소가 공간으로 전유되고 공간의 의미가 시간에 따라 변화하는 과정을 보였다. 라인그래프(Line graph)로는 일부 아바타가 일상적 실천을 통해 지도(map)처럼 주어진 경로를 따라가기만 하는 것이 아니라, 거시적인 권력관계를 변화시킬 수 있는 자신만의 여정(tour)을 만들어가고 있음을 확인했다. 본 연구는 실제 세계의 분석을 위해 고안된 사회과학 이론과 개념이 가상 세계의 데이터에도 적용될 수 있음을 보였을 뿐만 아니라, 연구 방법으로써 시각화가 갖는 유용성도 드러냈다. 본 연구를 통해 얻은 게임 공간에 대한 이해는 실제 게임 개발에도 도움을 줄 것으로 기대된다. In a computer game, avatars (game characters) virtually live in a game space doing various activities over the flow of time. Therefore the narrative structure of the gameplay is constructed from the spatial and temporal perception of the game players who control their avatars. Within a game, they move between places with the progression of game sessions, and the meaning of the space changes over time with their movement. Based on de Certeau’s concepts of “appropriation of place into space” and “active tour”, this study attempts to visualize the movement of avatars and to analyze the change of game space with the actual avatar movement history dataset from World of Warcraft, a popular MMORPG. Cartogram visualizes how players make appropriation of game space over time by moving between different zones. Line graph method is used to visually trace the trajectories of avatars in making their own active tours which have possibilities for changing power structure rather than following the recommended path. This research makes a contribution in bridging the gap between the research of the real world and the research of a virtual space. Visualizations proved what has been the traditional social science research can also be applied to the game world with actual behavioral data. This research provides better a understanding of the game world, and hope to provide some practical implications for developing computer games.

Associations of chronotype and insomnia with menstrual problems in newly employed nurses at university hospitals in the Republic of Korea

Jung Han-Na,Suh Dongwhan,Jeong Woo Chul,Ryu Jia,Kim Yu-Mi,Yoon Seohyun,Kim Hyunjoo 대한직업환경의학회 2023 대한직업환경의학회지 Vol.35 No.1

Background: Dysmenorrhea and menstrual cycle changes occur in women working shifts. Circadian rhythm disruption and sleep disturbances associated with shift work leads to health problems. We identified chronotypes and the occurrence of insomnia among newly employed university hospital nurses and investigated the association of these factors with menstrual problems. Methods: We conducted pre-placement health examinations for shift workers using selfreported questionnaires between 2018 and 2020. A total of 463 nurses were included in the study. Sociodemographic data, shift work experience, and information on insomnia were collected from health examination data. In addition, details regarding chronotype, dysmenorrhea, irregular and abnormal menstrual cycles, amenorrhea, and contraceptive use were obtained from the questionnaire. Multiple logistic regression analysis was performed to study the association between chronotype, insomnia, and menstrual problems after controlling for age, body mass index, contraceptive use, amenorrhea, and prior shift work. Results: The prevalence rates of dysmenorrhea, irregular menstrual cycles, and longer menstrual cycles were 23.8%, 14.9%, and 4.1%, respectively. The risk of dysmenorrhea increased in the evening-type (odds ratio [OR]: 3.209; 95% confidence interval [CI]: 1.685– 6.113) and those with insomnia (OR: 1.871; 95% CI: 1.074–3.261). Additionally, the risk of an irregular menstrual cycle (OR: 2.698; 95% CI: 1.167–6.237) increased in the evening-type, and the risk of a longer menstrual cycle (OR: 4.008; 95% CI: 1.354–11.864) increased in individuals with insomnia. Conclusions: Our findings suggest that dysmenorrhea is promoted in the evening-type and insomnia individuals. There may be an increased risk of irregular menstrual cycles among evening-type nurses and an increased risk of longer menstrual cycles among those with insomnia. Therefore, factors such as evening-type and insomnia should be considered for the prevention of menstrual problems in women performing shift work.

고경도 촉성용 딸기 신품종 ‘레드벨’ 육성

정종도(Jongdo Cheung),도한우(Hanwoo Do),서동환(Dongwhan Suh),최돈우(Donwoo Choi),이지은(Jieun Lee),김민기(Minki Kim) 한국원예학회 2013 한국원예학회 학술발표요지 Vol.2013 No.5

Preventive effects of ginseng against atherosclerosis and subsequent ischemic stroke: A randomized controlled trial (PEGASUS trial)

Boseong Kwon,Yunsun Song,Joong-Goo Kim,Dongwhane Lee,Sang-hun Lee,Young-Keol Cho,Jong S. Kim,Dae Chul Suh 고려인삼학회 2022 Journal of Ginseng Research Vol.46 No.4

Background: Korean Red Ginseng (KRG) extract has been shown to have beneficial effects in patientswith atherosclerosis, suggesting that KRG extract may be effective in preventing subsequent ischemicstroke in patients with severe atherosclerosis. Methods: This double-blind, placebo-controlled trial randomized patients with severe atherosclerosis inmajor intracranial arteries or extracranial carotid artery, to ginseng group and placebo group. They weregiven two 500-mg KRG tablets or identical placebo tablets twice daily for 12 months according torandomization. The primary endpoint was the composite of cerebral ischemic stroke and transientischemic attack during 12 months after randomization. The secondary endpoints were change in volumetricblood flow of the intracranial vessels and the incidence of newly developed asymptomaticischemic lesions. Any adverse events were monitored. Results: Fifty-eight patients were randomized from June 2016 to June 2017, 29 to ginseng and 29 toplacebo, and 52 (28 and 24, respectively) completed the study. One patient in the placebo group, butnone in the ginseng group, experienced ischemic symptoms (p ¼ 0.46). Changes in volumetric blood flowand the presence of ischemic brain lesions did not differ significantly in the two groups, and none ofthese patients experienced adverse drug reactions. Conclusion: Ginseng was well tolerated by patients with severe atherosclerosis, with these patientsshowing good compliance with ginseng dosing. Ginseng did not show significant effects compared withplacebo, although none of the ginseng-treated patients experienced ischemic events. Long-term studiesin larger patient populations are required to test the effect of ginseng.

차광 정도가 삼채의 생육 및 수량에 미치는 영향

이은숙(Eunsook Lee),이문중(Munjung Lee),김임수(Imsoo Kim),서동환(Dongwhan Suh) 한국원예학회 2014 한국원예학회 학술발표요지 Vol.2014 No.10

바이오숯 처리가 토양이화학성 및 배추 수량에 미치는 영향

박준홍(Junhong Park),박상조(Sangjoo Park),서영진(Youngjin Seo),권오흔(Ohheun Kwon),최성용(Seongyong Choi),서동환(Dongwhan Suh),박소득(Sodeuk Park) 한국토양비료학회 2015 한국토양비료학회 학술발표회 초록집 Vol.2015 No.5