족관절 기능과 증상을 중심으로 평가한 경골 원위부 골절에서의 금속정 치료 결과

김병민,배서영,노재영,Kim, Byoung-Min,Bae, Su-Young,Roh, Jae-Young 대한족부족관절학회 2008 대한족부족관절학회지 Vol.12 No.1

Purpose: To evaluate the safety and prognostic factors of intramedullary nailing of distal tibia fractures in terms of function and symptoms of the ankle joint. Materials and Methods: We retrospectively analyzed 22 distal tibial fractures with intramedullary nailing. The mean duration of follow-up was 43 months. We reviewed medical records to describe each case. We measured radiographic parameters such as fracture configuration, arthritic change of the ankle joint and status of reduction. We also assessed clinical results by AOFAS ankle hind foot scoring system, degree of pain by VAS and range of motion to find out prognostic factors for functional result of the ankle joint. Results: Bone healing was obtained in all cases without any wound complications. Mean AOFAS ankle score was 94. There were 4 cases with mild (VAS<3/10) ankle pain and 2 cases with mild limitation of ankle motion. The comminution of fracture had a significant relationship with delayed angular deformity of ankle joint (p=0.032). There was no other significant parameter affecting ankle joint function except the location of nail-end. Conclusion: Intramedullary nailing in distal tibia fracture is a safe and effective procedure. But further study may need to evaluate the relationship between the position of nail-end and the function of ankle joint.

동아시아 근대지향의 태동과 조선지식인의 자각 - 연암(燕岩)에서 노신(魯迅)에 이르기까지 -

김병민 ( Byoung Min Kim ) 한국한문학회 2005 韓國漢文學硏究 Vol.0 No.36

변형 마우 절골 술기의 유용성과 한계점 (30예 추시 보고)

배서영,김병민,남희태,최희준,Bae, Su-Young,Kim, Byoung-Min,Nam, Hee-Tae,Choi, Hee-Joon 대한족부족관절학회 2008 대한족부족관절학회지 Vol.12 No.1

Purpose: To evaluate the value and limitation of modified Mau osteotomy through the review of 30 feet treated by this procedure. Materials and Methods: We retrospectively analyzed 30 cases treated with modified Mau osteotomy since 2002. The mean duration of follow-up was 10 months. We reviewed medical records to describe each case and select several clinical factors which related with surgical procedure and could influence on final results. We measured radiographic parameters such as hallux valgus angle (HVA), intermetatarsal angle (IMA), distal metatarsal articular angle (DMAA), sesamoid position and also assessed clinical outcomes by AOFAS score and satisfaction degrees. Results: The mean preoperative HVA and IMA were $40.4^{\circ}$, $17.4^{\circ}$ and the mean amounts of correction were $31.2^{\circ}$ and $11.5^{\circ}$. Amounts of delayed loss of correction were 16.8% in HVA and 19.2% in IMA. Initial HVA, rotational angle and translation distance of the distal fragment, stability of fixation, first ray instability were revealed as significant factors for the final result from this procedure. DMAA was increased by rotation of the distal fragment and decreased by adding translation on the rotation. Conclusion: Modified Mau osteotomy is an effective procedure to get enough correction. But, it is important to try to avoid excessive rotation of the distal fragment because it may worse joint congruity. It may be worthwhile to pay close attention to the direction of saw and stability of fixation.

침투력을 고려한 터널의 지반반응곡선

신영진,김병민,신종호,이인모,Shin, Young-Jin,Kim, Byoung-Min,Shin, Jong-Ho,Lee, In-Mo 한국터널지하공간학회 2007 한국터널지하공간학회논문집 Vol.9 No.2

When a tunnel is excavated below groundwater table, the groundwater flows into the excavated wall of tunnel and seepage forces are acting on the tunnel wall. Such seepage forces significantly affect the ground reaction curve which is defined as the relationship between internal pressure and radial displacement of tunnel wall. In this paper, seepage forces arising from the ground water flow into a tunnel were estimated quantitatively. Magnitude of seepage forces was decided based on hydraulic gradient distribution around tunnel. Using these results, the theoretical solutions of ground reaction curve with consideration of seepage forces under steady-state flow were derived. A no-support condition and a supported condition with grouted bolts and shotcrete lining were considered, respectively. The theoretical solution derived in this study was validated by numerical analysis. The changes in the ground reaction curve according to various cover depths and groundwater table conditions were investigated. Based on the results, the application limit of theoretical solutions was suggested. 지하수위 아래에 터널이 굴착되면,지하수가 터널내로 유입되면서 터널 단면에 침투력이 작용하게 된다. 이 침투력은 내압과 터널 내공단면의 변위 관계로 정의되는 지반반응곡선에 큰 영향을 미치게 된다. 본 연구에서는 터널내로의 지하수 흐름으로 발생하는 침투력을 정량적으로 평가하였다. 침투력은 터널 주위의 동수경사의 분포를 바탕으로 계산되었으며, 이 결과를 바탕으로, 정상류 흐름일 때 침투력을 고려한 지반반응곡선의 이론해를 유도하였다.보강이 없는 경우와 전면 접착형 록볼트와 숏크리트 라이닝으로 보강된 경우의 변화가 고려되었다. 본 연구에서 유도된 이론해는 수치해석을 통해 검증되었으며, 다양한 토피고와 지하수위 조건에 따른 지반반응곡선의 변화가 연구되었다. 이를 바탕으로 이론해의 적용한계가 제시되었다.

고관절 골절의 수술적 치료

서유성 ( You Sung Suh ),김병민 ( Byoung Min Kim ) 대한고관절학회 2009 Hip and Pelvis Vol.21 No.2

Hip fracture is much more common after the age of 65 year old, and this malady has increased because to the longer average life span with the advances of medical care. Despite the development of the treatments and rehabilitation techniques, hip fracture is well known for having high rates of complications and mortality. The risk factors, mechanisms of injury and the underline disease of hip fracture are also well known, and this has helped these patients to recover as soon as possible and to walk and move earlier after appropriate surgical operations. Most fractures must be treated by an open operation and performing rigid internal fixation or arthroplasty. We report here on the major operational treatments for femur neck fracture and intertrochanter fracture.

Flexible AM-OLED를 위한 OTFT 기술 기반의 MIS 구조 C-V 특성 분석

김중석(Jung Seok Kim),김병민(Byoung-min Kim),장종현(Jong-hyeon Chang),주병권(Byeong-Kwon Ju),박정호(Jungho Park) 대한전기학회 2006 대한전기학회 학술대회 논문집 Vol.2006 No.10

최근 flexible OLED의 구동에 사용하기 위한 유기박막트랜지스터(Organic Thin Film Transistor, OTFT)의 연구에서는 용매에 용해되어 spin coating이 가능한 재료의 개발에 관심을 두고 있다. 현재 pentacene으로는 아직 spin coating으로 제작할 수 있는 상용화된 제품이 없고 spin coating이 가능한 활성층 물질(active material)로 P3HT가 쓰이고 있다. 본 연구에서는 용해 가능한 P3HT 활성층 물질과 여러 종류의 용해 가능한 게이트 절연물(gate insulator, GI)을 사용하여 안정된 소자를 구현할 수 있는 공정을 개발하는 목적으로 metal- insulator-semiconductor(MIS) 소자를 제작하여 C-V 특성을 측정하고 분석하였다. 먼저 7㎜×7㎜ 크기의 pyrex glass 시편 위에 바닥 전극으로 1600Å Au을 증착하고 spin coating 방식을 이용하여 PVP, PVA, PVK, BCB, PI의 5종류의 게이트 절연층을 각각 형성하였고 그 위에 같은 방법으로 P3HT를 코팅하였다. P3HT 코팅 시 bake 공정의 유무와 sprin rpm의 연화에 따른 P3HT의 두께를 측정하였다. GI의 종류별로 주파수에 따른 capacitance를 측정하여 비교, 분석하였다. C-V 측정 결과 PVP, PV A, PVK, BCB, PI의 단위 면적당 capacitance 값은 각각 1.06, 2.73, 2.94, 3.43, 2.78㎋/㎠로 측정 되었다. Threshold voltage, V<SUB>th</SUB>는 각각 -0.4, -0.7, -1.6, -0.1, -0.2V를 나타냈다. 주파수에 따른 capacitance 변화율을 측정한 결과 GI 물질 모두 주파수가 높을수록 capacitance가 점점 감소하는 경향을 보였으나 1~2㎋ 이내의 범위에서 작은 변화율만 나타냈다. P3HT의 두께와 bake 용도를 변화시켜 C-V 값을 측정한 결과 큰 차이는 없었다. FE-SEM으로 관찰한 결과에서도 두께나 온도에 따른 P3HT의 표면 morphology 차이를 확인할 수 없었다. 본 연구에서 PVK와 P3HT의 조합이 수율(yield)면에서 가장 안정적이연서 3.43 ㎋/㎠의 가장 높은 capacitance 값을 나타내고 V<SUB>th</SUB> 값 또한 -1.6V로 가장 낮은 값을 보였다.

운동 도중 발생한 대흉근 파열 치험례 보고

이병일 ( Byung Ill Lee ),김병민 ( Byoung Min Kim ),권세원 ( Sai Won Kwon ),천동일 ( Dong Ill Chun ) 대한스포츠의학회 2015 대한스포츠의학회지 Vol.33 No.1

Rupture of the pectoralis major muscle may occur in youngers or athletes associated with extreme sports, especially during the weight training. It is uncommon, but the incidence is increased by the recent growth of athletic population. In young active individuals, ruptures of the pectoralis major muscle have the best results after surgical repair. However, if diagnosis of the pectoralis major muscle rupture is missed or delayed, the patient will be limited to return to sport activity. The object of this paper is to report our experience of pectoralis major muscle rupture in 3 cases.

Arthroscopic Multiple Suture Pulling Technique for Bony Bankart Lesion - case series

Byung Ill Lee(이병일),Byoung Min Kim(김병민) 대한견주관절의학회 2013 대한견주관절학회 학술대회논문집 Vol.2013 No.11

전방십자인대 재건술 후 잔류조직 보존술식과 비보존술식의 자기공명영상을 이용한 연구

이병일(Byung-Ill Lee),김병민(Byoung-Min Kim),고덕환(Duk-Hwan Kho),권세원(Sai-Won Kwon),김환배(Hwan-Bae Kim) 대한정형외과학회 2015 대한정형외과학회지 Vol.50 No.6

목적: 전방십자인대 재건술 시 잔류조직 보존술식과 비보존술식 간 차이를 안정성 검사와 기능적 평가, 이차관절경 소견 및 자기공명영상을 이용하여 비교하고자 한다. 대상 및 방법: Outside-in 술식하에 자가 슬괵건을 이용한 재건술을 시행받고 12개월 이상 경과하여 이차관절경과 자기공명영상을 시행한 환자 23명 중 보존군 12예와 비보존군 11예로 나누어 두 군 간에 안정성 검사, 임상적 기능평가점수, 이차관절경 소견과 자기공명영상에서 signal to noise quotient (SNQ) ratio를 비교하였다. 결과: 안정성 검사와 International Knee Documentation Committee 점수, Lysholm 점수에서는 두 군 간에 차이를 보이지 않았으나 외발뛰기 검사에서 보존군에서 더 우수하였고(p<0.05), 보존군에서 유의하게 SNQ ratio가 더 낮았다(p<0.05). 이차관절경 평가는 두 군 간에 유의한 빈도 차이를 보이지 않았다. 이식건의 활액막 형성정도와 이식건의 상태는 SQN ratio와 연관성이 없었다(p>0.05). 결론: 잔류조직 보존술식은 1년 이상 추시 시 자기공명영상에서 비보존군에 비해 낮은 신호강도를 보였다. 잔류조직 보존술식이 인간대상연구에서 생물학적 차이를 보임을 자기공명영상을 이용하여 간접적으로 확인할 수 있었다. Purpose: The purpose of this study was to clarify the difference between the remnant-preserving and remnant-sacrificing techniques in anterior cruciate ligament (ACL) reconstruction using stress test, functional score, 2nd look arthroscopy and magnetic resonance imaging (MRI). Materials and Methods: Among 66 patients having anatomical ACL reconstruction with the fourstrand hamstring autograft using outside-in technique (FlipCutter®) for the femoral tunnel from April 2012 to April 2014, 23 patients who underwent 2nd look arthroscopy and MRI were included. The remnant-preserving group included 12 patients and the remnant-sacrificing group included 11 patients. The two groups were compared and analyzed with regard to stability (Stress test using GNRB<SUP>®</SUP>, pivot shift test), functional assessment (International Knee Documentation Committee [IKDC] scale, Lysholm score, one leg hoop test), and the result of second-look arthroscopy and signal to noise quotient (SNQ) ratio of the graft in MRI. Results: The two groups did not differ significantly in the stability test, IKDC scale, and Lysholm test. The remnant-preserving group showed significant improvement in one leg hoop test compared with the remnant-sacrificing group (p<0.05). The SNQ ratio of the grafted tendon in the remnant-preserving group was significantly lower than those in the remnant-sacrificing group in all regions (p<0.05). In second-look arthroscopy, no significant difference in tension, synovialization, and status of the bundle was observed between the two groups. The grade of synovialization and the status of the bundle in second-look arthroscopy did not influence the signal intensity of the graft in MRI (p>0.05). Conclusion: More than 12 months after surgery, the graft of the remnant-preserving group showed lower signal intensity compared to that of the remnant-sacrificing group by MRI evaluation. The remnant preserving technique has biological difference compared with the remnant sacrificing technique in human study.

나비형 골편을 동반한 상완골 간부 골절에서 골수강내 금속정 고정술과 금속판 고정술의 결과 비교

고덕환 ( Duk-hwan Kho ),김형준 ( Hyeung-june Kim ),김병민 ( Byoung-min Kim ),황현룡 ( Hyun-ryong Hwang ) 대한스포츠의학회 2017 대한스포츠의학회지 Vol.35 No.1