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방진영(Jin-Young Bang),박병욱(Byung Ook Park),서용민(Yong Min Seo),김대욱(Dae Wook Kim),이동현(Dong-Hyun Lee),김영복(Youngbok Kim),김영창(Young Chang Kim),김지완(Ji Wan Kim) 대한정형외과학회 2017 대한정형외과학회지 Vol.52 No.6
목적: 이번 연구의 목적은 쇄골 간부 골절 환자에서 최소 침습적 금속판 내고정술과 고식적 방법인 관혈적 정복술 및 금속판을 이용한 고정술의 내고정술의 수술 후 임상 결과를 비교해보고자 하였다. 대상 및 방법: 인제대학교 해운대백병원에서 2011년 5월부터 2016년 8월까지 쇄골 간부 골절로 수술적 치료를 시행한 환자를 대상으로 후향적 연구를 진행하였다. 전이가 20 mm 이상인 경우, 수상 후 2주 이내의 급성 골절, 골의 성장이 완료된 환자, 6개월 이상 추시 관찰된 환자를 대상으로 하였다. 환자의 인구학적 정보 및 수술 시간, 골유합률, 골유합 시기, 쇄골 단축, University of California at Los Angeles 견관절 기능 점수, 합병증 등을 포함한 임상 결과를 조사하였다. 21예의 고식적 금속판 고정술군(1군)과 최소 침습적 금속판 고정술군 19예(2군)로 나누어 상기 항목들을 비교해 보았다. 결과: 골유합은 모든 예에서 얻을 수 있었으며 골유합 시기는 1군에서 14.9주, 2군에서 14.2주로 차이가 없었다(p=0.713). 두 군 모두 우수한 견관절 기능 점수를 가졌다(34.0 vs. 33.7, p=0.658). 2군에서 적은 출혈량 및 짧은 수술 소요시간을 보였다 재수술 및 감염은 두 군 모두에서 없었으며 삽입물의 파쇄도 없었다. 골절된 쇄골의 건측 쇄골에 대한 길이 비율은 3% 이내를 보여 단축 소견은 보이지 않았다. 결론: 쇄골 간부 골절에서 관혈적 정복술 및 금속판 고정술 방법과 최소 침습적 금속판 고정술의 두 방법 모두 우수한 임상적, 방사선적 결과를 보였다. 최소 침습적 금속판 고정술은 전이성 쇄골 골절의 수술적 치료법으로 유용한 한 가지 방법이 될 것이다. Purpose: The purpose of this study was to make a comparison between minimally invasive plate osteosynthesis (MIPO) and conventional open reduction and plating (COP) to treat displaced clavicle shaft fractures. Materials and Methods: We retrospectively reviewed patients with clavicle shaft fractures, who underwent surgery by using a locking plate between May 2011 and August 2016. The inclusion criteria were: 1) displaced ≥20 mm, 2) acute fracture of less than 2 weeks from injury, 3) skeletally mature patients, and 4) follow-up of at least 6 months. The demographic data and clinical outcomes, including operation time, fracture union rate, union time, shortening of clavicle, shoulder functional score (University of California at Los Angeles score), and complications, were evaluated. The clavicle length ratio was measured to evaluate shortening. We compared the clinical outcomes between two groups: the COP group that included 21 patients treated with COP (group 1) and the MIPO group that included 19 patients treated with MIPO (group 2). Results: In all cases, union of fractures was successfully achieved. The mean union time was 14.9 weeks in group 1 and 14.2 weeks in group 2 (p=0.713). Both groups had good functional scores (34.0 vs. 33.7, p=0.658). Group 2 had shorter operation time and less bleeding. There were no secondary interventions or infections. The clavicle length ratio was similar between the two groups; and all patients in both groups showed no shortening (less than 3%). There were no implant failures in either group. Conclusion: The clinical and radiologic outcomes were satisfactory in both groups. We suggest that MIPO may be a safe and effective method for displaced clavicle shaft fractures.
방진영,하상백,이종찬,Bang, Jin-Young,Ha, Sang-Baek,Lee, Jong-Chan 한국기계가공학회 2004 한국기계가공학회지 Vol.3 No.1
In this paper, the relationship between the mechanical properties of alumina abrasives and grinding performance was investigated. Micro vickers hardness and fracture strength of all abrasives used in this study were measured. The grinding experiments were earned out with alumina grinding wheels made by various kinds of alumina abrasives including 32A, WA, ART, ALOMAX, and RA. The performance of such grinding wheel for grinding SKD11 was evaluated by specific grinding energy, grinding-ratio, and surface roughness. The grinding wheels composed by the harder abrasives and the lower fracture strength abrasives showed better grinding performance.
견관절 석회화 건염의 다발성 천공술 및 스테로이드 주사 후 발생한 극하건 단독 파열 및 상견갑 신경병증
방진영 ( Jin-young Bang ) 대한스포츠의학회 2016 대한스포츠의학회지 Vol.34 No.2
Isolated rupture of infraspinatus after barbotage for calcific tendinitis has not been reported in the literature. We report on a case of isolated infraspinatus rupture and suprascapular nerve neuropathy after steroid injection and barbotage of calcific tendinitis in rotator cuff. At 6-month follow-up after surgery, satisfactory clinical and radiological outcomes were observed with daily activity level. The author reports this case and review the literature.
고교 야구 선수에서 발생한 전하방의 관절순 주변 낭종에 의한 액와 신경의 압박 신경 병증
박진영 ( Jin Young Park ),전승협 ( Seung Hyub Jeon ),오경수 ( Kyung Soo Oh ),정석원 ( Seok Won Chung ),임정주 ( Jung Joo Lim ),방진영 ( Jin Young Bang ) 대한스포츠의학회 2015 대한스포츠의학회지 Vol.33 No.1
Paralabral cysts of the shoulder are rare, and there are few reports available that describe antero-inferior paralabral cysts arising from a detached antero-inferior glenoid labral tear without shoulder instability. We report an anteroinferior labral tear without shoulder instability in adolescent overhead athlete associated with paralabral cyst that leads to axillary nerve neurapraxia. Although nonoperative management of such labral lesions may provide symptoms of relief, it may not be enough for the athlete to return to the game. However, surgical treatment in this case provides successful recovery and rapid return to playing baseball play without having to worry about the progression of muscle denervation.
Clinical Article : 주관절의 외반 신전 과부하 증후군 야구선수에서 시행한 관절경하 주두 골극절제술
박진영 ( Jin Young Park ),윤형문 ( Hyung Moon Yoon ),오경수 ( Kyung Soo Oh ),유현열 ( Hyun Yul Yoo ),방진영 ( Jin Young Bang ),강대명 ( Dae Myung Kang ) 대한스포츠의학회 2013 대한스포츠의학회지 Vol.31 No.2
We evaluated the clinical outcome after arthroscopic olecranon osteophyte resection without ligament operation in the elite baseball players who had valgus extension overload syndrome without moderate or severe medial collateral ligament injury. From January 2007 to December 2011, twelve patients underwent arthroscopic osteophyte resection without ligament operation and they were followed for more than 12 months. The mean age was 19.2 years and mean follow-up period was 26 months. The clinical results were evaluated using range of motion, visual analogue scale (VAS) and Mayo elbow performance score (MEPS). After checking osteophyte size and location through 3-dimensional computed tomography, arthroscopic osteophyte resection was performed. Average preoperative extension, flexion, pronation and supination were 2.3o, 138.2o, 76.4o, and 69.1o. Average postoperative extension, flexion, pronation and supination had been changed into 0.7o, 137.3o, 79.1o, and 77.3o. Average preoperative pain VAS and MEPS were 5.5 and 67.5. Average postoperative pain VAS and MEPS had been changed into 0.4 (p <0.001) and 97.5 (p<0.001). Eleven patients returned to play. Ten cases returned to their own position. No patients were performed other operation for elbow pain. The arthroscopic osteophyte resection in valgus extension overload syndrome with low grade medial ulnar collateral ligament (MUCL) injury or without MUCL injury was a one of the ideal treatment option for early return to pre-injury levels and relief of pain.
400 kHz 페라이트 유도 결합 플라즈마를 위한 임피던스 매칭 네트워크
조성원,방진영,이영광,정진욱,Cho, Sung-Won,Bang, Jin-Young,Lee, Young-Kwang,Chung, Chin-Wook 한국반도체디스플레이기술학회 2007 반도체디스플레이기술학회지 Vol.6 No.2
Low frequency (400 kHz) Ferrite ICP has been proposed for large area processing. Because the coupling coefficient is close to 1, the transformer matching can be adapted to Ferrite ICP. The transformer matching system is simple. In this paper the new matching system by controlling the turns of transformer using relays is proposed for impedance matching. We developed a simple matching system and characterized it when the turns were changed. It was observed that the 2-channel relay is available for transformer matching.