A Systematic Review and Meta-Analysis of Arthroscopic Meniscus Repair in Young Patients: Comparison of All-Inside and Inside-Out Suture Techniques

Dong­Geun Kang,Young­Jin Park,Jae­Ha Yu,Jong­Byung Oh,Dong-Yeong Lee 대한슬관절학회 2019 대한슬관절학회지 Vol.31 No.1

Purpose: The purposes of the present study were to review published studies that investigated arthroscopic meniscus repair to treat meniscus injury in young patients and to compare all­inside and inside­out suture techniques.Methods: Various electronic databases were queried for published articles, and this search was updated in August 2017 for evaluating the outcomes of arthroscopic meniscus surgery in young patients. Data search, extraction, analysis, and quality assessment were performed according to the Cochrane Collaboration guidelines, and the clinical outcomes were evaluated using various outcome values in young patients according to suture techniques.Results: Three randomized controlled trials and three prospective comparative studies were included in this systematic review and meta­analysis. There were no significant differences in clinical outcomes such as meniscus healing rate (risk ratio [RR], 1.11; 95% confidence interval [CI], 0.90 to 1.37; I2=39%) and perioperative complications (RR, 0.62; 95% CI, 0.23 to 1.72; I2=43%) between all­inside and inside­out techniques for meniscus repair.Conclusions: The present study shows favorable results for clinical outcomes such as meniscus healing rate and perioperative complications in young patients. Furthermore, based on our results, both all­inside and inside­out meniscal suture techniques are equally effective in these patients.

원위 대퇴골의 고립성 골연골종에서 발생한 속발성 연골 육종 1례 보고

정필현,황장수,강석,김용민,오형호,채동주,김종필 동국대학교 경주대학 1996 東國論集 Vol.15 No.-

연골육종은 비교적 서서히 자라며 늦게 전이하는 악성 연골 종양으로 알려져 있다. 골 연골종에서 발생한 속발성 연골육종은 발생빈도는 드물며 타부위로의 전이가 적고 악성도가 낮은 경우가 많아 적합한 수술적 치료로서 좋은 예후를 보이는 것으로 보고되고 있다. 본 동국대학교 정형외과학 교실에서는 우측 대퇴골 원위부 골간단부에 생긴 고립성 골 연골종에서 이차적으로 발생한 연골육종을 치험한 바 문헌고찰과 함께 보고하는 바이다. A case of Secondary Chondrosarcoma Arising from Solitary Osteochondroma of the Distal Femur Department of Orthopaedic Surgery, College of Medicine, DongGuk University Phil Hyun Chung M.D., Jung Su Hwang M.D., Suk Kang M.D., Yang Mln Kim M.D., Hyung Ho Oh M.D., Dong Ju Chae M.D., Jong Pil Kim M.D. Chondrpsarcoma is a malignant cartilage-forming tumor that grows slowly and metastasis of this tumor occurs in late stage. Secondary chondrosarcomas arising from a solitary osteocartilaginous exostosis are rare and those have a better prognosis than other chondrosarcomas, and they rarely metastasize. We present our experience with a case of secondary chondrpsarcoma arising in solitary osteochondroma of distal metaphysis of right femur with clinical details.

기관골 신생증 1예

오영상,이은우,정종혁,문승원,김수현,김동한,양혁승,박정환,박경옥,강성수,이영직 朝鮮大學校 附設 醫學硏究所 2006 The Medical Journal of Chosun University Vol.31 No.2

Tracheobronchopathia osteoplastica is a rare disorder of unknown cause characterized by the projection of numerous bony or cartilaginous submucosal nodules into the tracheobronchial lumen with sparing of the posterior membranous portion of tracheobronchial tree. In the past, most of the cases were diagnosed as secondary finding at autopsy. Nowaday, the key component of the evaluation is flexible fiberoptic laryngoscopy and bronchoscopy, which typically demonstrates irregular spicules of subrnucosal bone and cartilage projecting into the tracheobronchial lumen and causing various degrees of airway obstruction. A 45 years old man was visited Sunchon St. Carollo hospital due to discomfort on throat. We saw several nodules just below vocal cord via laryngoscope. The computed tomography revealed multiple small calcified nqdules on trachea and both main bronchi. Pathologic finding of bronchoscopic biopsy showed abnormal proliferation of bony and cartilagious nodules in the tracheal submucosa. These fingdings were consistent with tracheobronchopathia osteoplastica. We report here on a case of tracheobronchopathia osteoplastica with review of literature.

광합성세균 Phodospirillum rubrum의 무기질소원의 이용

강봉조,오덕철,이동헌 濟州大學校 基礎科學硏究所 1997 基礎科學硏究 Vol.10 No.2

Rhodospirillum rubrum, a photosynthetic bacterium, was tested for the utilization of inorganic nitrogen sources such as NH₄Cl, NaNO₂ and NaNO₃. The cell growth was most abundant with NH₄Cl among three nitrogen sources regardless of aerobic or anaerobic condition. With usable nitrogen sources, the cell growth was always greater in anaerobic condition than aerobic condition. R. rubrum used NH₄Cl and NaNO₃, but not NaNO₂ as nitrogen source in anaerobic condition. But in aerobic condition, R. rubrum used all nitrogen sources. The sonsumption of total nitrogen by R. rubrum used was highest in the NH₄Cl medium among three kinds of media regardless of culture conditions. The pH of media were increased according to the cell growth. The production of nitrite from nitrate in the NaNO₃ medium was much greater in anaerobic condition than aerobic condition.

複合組織鋼의 摩擦 熔接部의 疲勞破壞特性에 관한 硏究

吳世旭,姜鎬珉,兪在煥,林東哲 東亞大學校 1988 東亞論叢 Vol.25 No.1

This study has been carried out to investigate the characteristics of fatigue crack of welded zone and heat affected zone of friction welded dual phase steel. The results obtained from the experiments are summarized as follows. Microstructure of welded zone is changed to ferrite and pearlite from ferrite and martensite by wel-ding heat. Micro-vickers hardness of welded zone is higher than that of base metal zone and heat affec-ted zone. Micro-vickers hardness of heat affected zone is lower than that of welded zone and microstructure of heat affected zone is changed to fine martensite and ferrite by heating cycle of welding. Fatigue limits of heat affected zone is a little higher than that of welded zone and base metal zone. There are no difference of fatigue limit of base metal zone and welded zone. Fatigue strength of welded zone is similar to that of base metal zone. At high △K region(△K>19MPa·??), fatigue crack propagation velocity of heat affected zone is slower than that of welded zone and base metal zone, and the difference of fatigue crack propagation velocity is smaller than that of high △K region. The crack occurs to the notch in heat affected zone first, but the final fracture surface is the surface of welded zone. It is abvious that heat affected zone of friction welded dual phase steel superior to welded zone and base metal zone in fatigue strength and resistance of fatigue crack propagation. The above mentioned facts are contrary to theory that heat affected zone of general metals is weaker than welded zone and base metal zone.

전방 십자 인대 파열에서의 반월상 연골판 파열의 양상

강충남,김종오,김동욱,고영도,유재두,최창호 대한스포츠의학회 1999 대한스포츠의학회지 Vol.17 No.1

Injury to associated structures is expected to worsen the prognosis of ACL tears. Meniscal injuries are well known to coexist in knees with both acute and chronic ACL injuries. However, it is not conclusive whether the likelihood of encountering a repairable meniscal lesion diminishes as the time from injury increases. W e reviewed records of 127 patient receiving an arthroscopically assisted stabilizing procedure for an acute and chronic ACL injury incurred while skiing, soccer, traffic accident to associated meniscal injury. All patient had undergone arthroscopic evaluation. We classified acute injury as injury less than 3 months old at time of surgery, and chronic injury as more than 3 months old. Acute injuries were 88 cases and chronic injuries were 39 cases. In 55 ski-related injuries, 41 knees were acute and 14 knees were chronic. Fourteen(34%) meniscal tears were noted in chronic cases. In 42 soccer injuries, 20 knees were acute and 22 knees were chronic. In acute cases, 14(70%) meniscal tears were noted and in chronic cases, 14(64%) meniscal tears were noted. In 30 traffic accident injuries, 27 knees were acute and 3 knees were chronic. In acute cases, 19(70%) meniscal tears were noted and in chronic cases, 2(67%) meniscal tears were noted. There was strong trend of the increased incidence of medial involvement in the non-skiers than in the skiers, In the type of meniscal tear with acute ACL rupture, 33 of 52 meniscal were longitudinal tear, 6 were horizontal tear, 4 were radial tear(only in lateral meniscus) and 9 were complex tear. In the pattern of meniscal tear with chronic ACL rupture, 15 of 37 meniscal were longitudinal tear, 3 were horizontal tear, 1 was radial tear(only in lateral meniscus) and 18 were complex tear(medial meniscus 16, lateral meniscus 2). In the treatment of torn menisci, 29 of 52 meniscal tears were treated by conservative treatment and meniscal repair, 21 meniscal tears were treated by partial menisectomy and 2 meniscal tears were treated by subtotal menisectomy in acute injuries. In chronic injury, 10 of 37 meniscal tears were treated by conservative treatment and meniscal repair, 18 meniscal tears were treated by partial menisectomy and 9 meniscal tears were treated by subtotal menisectomy. There was no total menisectomy. As the time from injury increased, the medial meniscus tears were severe and were more likely to require menisectomy.

소형 Gun Drill Machine 개발에 관한 연구

오진수,박광훈,남궁재관,우창기,강동명 한국공작기계학회 2006 한국공작기계학회 추계학술대회논문집 Vol.2006 No.-

This compact Gun Drilling Machine was developed to improve productivity and economical efficiency for small and midium enterprise tool makers. To produce specialize tools that gun drilling works should be required prior to making deep holes. Gun drill machines are so expensive and big burden for small tool makers so that works used to execute through outside orders but it was required lot of cost too. Most of gun drill machines are providing for high volume and large capacity enterprises. In order to support for small and medium enterprise purpose that compact gun drill machine was designed and developed. It could be improved products quality, productivity and saving manufacturing cost using this machine.

이족로봇의 경사면 균형 유지와 보행에 관한 연구

오성남,윤동우,손영익,김갑일,임승철,강환일 명지대학교 산업기술연구소 2007 産業技術硏究所論文集 Vol.26 No.-

This paper aims to provide a way to improve dynamic stability of biped robots against undesirable disturbances and in a slope. By using an angular velocity sensor and an acceleration sensor on its waist, we can make a medium-sized biped robot walk stably in a slope against impulsive disturbances. In addition, it is possible for the robot to walk stably in an unknown slope. The measured signals from the sensor are used for compensating the reference angles of ankle, knee, and pelvis joints. Some experiments show that the stability of the robot is much enhanced by using cheap sensors and a simple algorithm. This work helps biped robots walk more stably in real environments.

제주연안 갯녹음(백화) 지역의 해수에 분포하는 세균군의 분자생물학적 분석

강봉조,김미란,윤병준,이동헌,오덕철,강형일 濟州大學校 基礎科學硏究所 2002 基礎科學硏究 Vol.15 No.2

본 연구에서는 갯녹음(백화)현상이 세균생태계와 어떤 관련이 있는지에 대한 기초자료 및 정보를 얻기 위하여 갯녹음 현상이 일어난 제주도 성산과 강정지역 연안의 해수에 존재하는 세균군을 16S rRNA 증폭기법을 이용하여 조사하였다. 강정지역에서는 Alcanivorax, Paracoccus, Damselae, Pseudomonas, Rhodovulum, Silicibacter, Sulfitobacter, Roseobacter 등 다양한 종류의 세균이 분포되어 있었으며, Alcanivorax가 20%의 빈도로 가장 많이 나타났다. 반면, 성산 지역에서는 Pseudomonas속 균주가 우점종으로서 존재하였으며, Pseudomonas tolaasii(혹은 Pseudomonas corrugata)와 유연관계가 가까운 세균은 44%, Pseudomonas mandeli와 가까운 세균이 24%, Verrucomicrobiales와 가까운 세균은 4%, 기타 동정되지 않은 세균은 세 group으로 구분되었으며, 각각 8%, 8%, 12%를 차지하여, 두 곳에 분포되어 있는 세균군상이 상당한 차이점이 있음을 확인하였다. 갯녹음 지역인 강정과 성산 해수의 8월(표품 채집시기)의 수온은 27℃-27.5℃, 염분의 농도는 30.24-30.60%, pH는 8.23-8.36, 용존산소량(DO)은 각각 7.20-7.28로, 두 지역에서 매우 비슷한 것으로 조사된 바 있는데, 이는 수온이나 염분의 농도, 또는 pH보다는 다른 원인에 의하여 두 갯녹음 지역에 분포하는 세균군의 차이를 가져왔음을 제시해 주었다. In this study, the bacterial communities distributed in sea water of the whitening areas of Gangjeong and Seongsan, Jeju-do have been analyzed using the PCR amplification of 16S rRNA to obtain fundamental data and information on relationship of the whitening phenomenon and microbial ecosystem. In Gangjeong, diverse bacteria such as Alcanivorax, Paracoccus, Damselae, Pseudomonas, Rhodovulum, Silicibacier, Sulfitobacter, and Roseobacier have been found, and Alcanivorax was the most abundant clone. The most abundant clone from Seongsan was Pseudoinonas, of which Pseudomonastolaasii and Pseudonionas mandeli were most abundantly occurred in the frequency of approx 44% and 24%, respectively. Approx 4% of the bacterial clones closest to firruconiicrobiales and other unidentified clones were also found in Seongsan, suggesting there is a great discrepancy between bacterial communities from the whitening areas of Seongsan and Gangjeong. The mean tem- perature, chlorine concentration, pH, and dissolved oxygen (DO) of the sea water of Gangjeong and Seongsan in August of 2001 (sampling period) was 27℃-27.5℃, 30.24-30.60%, pH 8.23-8.36,7.20-7.28 ㎎/ℓ, suggesting other environmental factors except for the factors mentioned above might result in difference of bacterial communities distributed in both areas.

Propylene Glycol Alginate 제조에 관한 연구

오찬열,김영조,강동섭,강영주,이장순 제주대학교 해양연구소 1988 해양자원연구소연구보고 Vol.12 No.-