자가 반건양건 이식술로 치료한 만성 전 경골건 파열: 2예 보고

박홍기,이상진,Park, Hong-Ki,Lee, Sang-Jin 대한족부족관절학회 2016 대한족부족관절학회지 Vol.20 No.4

The tibialis anterior tendon functions as a major dorsiflexor of the ankle. A rupture in this tendon can cause serious problems in the ambulatory function. A closed traumatic rupture without open wound or an atraumatic rupture can delay diagnosis and treatment. There are not enough guidelines for an effective surgical treatment on this chronic condition. Herein, we report two cases of chronic tibialis anterior disruption successfully treated by semitendinosus autograft.

심장이식 후 부신피질호르몬 투여로 인한 거골의 무혈성 괴사 - 1예 보고 -

박홍기,엄기석,Park, Hong-Gi,Eom, Gi-Serk 대한족부족관절학회 2000 대한족부족관절학회지 Vol.4 No.2

A vascular necrosis of the talus has frequently been reported following trauma because talus has no muscle insertions, sixty percent of the surface of the talus is covered by hyaline cartilage, takes only a small area for entrance of a blood supply. Osteonecrosis is also associated with a variety of nontraumatic disorders. There are many indications for steroid usage, patient with rheumatoid arthritis, systemic lupus erythematosus, chronic obstructive pulmonary disease, and status- post renal or cardiac transplantation may be on long- term steroid usage, osteonecrosis may develop. A vascular necrosis of the talus secondary to chronic steroid usage is an unusual case. Delay in detection of osteonecrosis may lead to fragmentation and collapse of the talar body. When pain on range of motion is present and conservative treatment have been exhausted, surgical treatment is indicated, that is, fusion of the ankle joint. However it is important that conservative treatment may prevent its various sequelae with early diagnosis because steroid - treated patients have a more operative risk and increased risk for postoperative infection. We report a rare case of corticosteroid induced avascular necrosis of talus after cardiac transplantation.

배양적 및 비배양적 방법에 의한 생물활성탄 부착세균 군집 특성

박홍기,정은영,정미은,정종문,지기원,유평종,Park, Hong-Ki,Jung, Eun-Young,Jung, Mi-Eun,Jung, Jong-Moon,Ji, Ki-Won,Yu, Pyung-Jong 한국생명과학회 2007 생명과학회지 Vol.17 No.9

정수처리 공정에서 생물활성탄 (BAC) 공정은 미생물의 유기물 제거능을 극대화시킨 일종의 생물여과 공정이다 BAC 공정은 유기물과 미생물 재성장능을 효과적으로 제거한다. BAC 공정은 그 수계에 존재하는 미생물들이 활성탄에 부착 ${\cdot}$ 서식하며 수중의 천연유기물질을 기질로 이용하기 때문에 그 수계에 서식하는 미생물 종들에 매우 의존적이다. 본 연구는 낙동강 하류의 배리취수장 원수를 사용하여 생물활성탄에 의한 pilot-plant 공정을 운전하면서 SAC 공정에서의 활성탄 재질별로 배양작 (평판배양법) 및 비배양적 방법 (FISH)을 이용하여 SAC 부착세균의 군집구조 특성을 조사하였다. 실험결과 석탄계 재질의 부착세균 HPC 및 생산력이 각각 $1.20{\times}l0^7{\sim}56.2{\times}l0^7$ CFU/g, $1.2{\sim}3.7\;mg-C/m^3{\cdot}h$ 의 범위를 보여 세균 생체량과 DOC 제거율은 석탄계 재질이 가장 높은 것으로 나타났다. 배양적 방법으로 활성탄 재질별 부착세균을 동정한 결과 Pseudomonas 속이 우접하였고, 그 다음으로 Flavobacterium 속, Alcaligenes 속, Acinetobacter 속, Sphingomonas 속 등의 순으로 동정되었다. 또한, Pseudomonas 속 중 석탄계와 야자계 BAC에서는 Pseudomonas vesicularis, 목탄계 BAC에서는 Pseudomonas cepacia가 우점종으로 분포하였다. 비배양적 방법인 FISH 법을 이용한 세균 군집구조 조사결과 활성탄 재질별로 ${\alpha}$군집 27.0 ${\sim}$ 43.0%, ${\gamma}$ 군집 11.3 ${\sim}$ 28.6%, ${\beta}$ 군집 7.1 ${\sim}$ 22.0% 비율로 나타나 유기물 제거효율은 주로 ${\alpha}$ 군집에 의해 조절되어짐을 알 수 있었다. The Biological Activated Carbon (BAC) process in the water treatments represents a kind of biofiltration process which capabilities of bacteria to remove organic matters are maximized. It enables to eliminate organic matters and effectively reduce microbial regrowth potentials. As attached bacteria employ natural organic matter as a substrate, they are significantly dependent on indigenous microorganisms. In this study, characteristics of bacterial community by culturable and unculturable Methods have been conducted in a pilot plant using SAC in water treatment process at the downstream of the Nakdong River. Based on the results, HPC and bacterial- production for coal-based activated carbon material were $1.20{\sim}56.2{\times}l0^7$ cfu/g and $1.2{\sim}3.7\;mgC/m^{3}h$, respectively, in the SAC process. The highest level of attached bacteria biomass and organic carbon removal efficiency was found in the coal-based activated carbon. The genera Pseudomonas, Flavobacterium, Alcaligenes, Acilzetobacter, and Spingomonas were identified for each activated carbon material. Pseudomonas vesicularis was the dominant species in the coconut- and coal-based materials, where as Pseudomonas cepacia was the dominant species in the wood-based material. The Scanning Electron Microscope (SEM) observation of the activated carbon surface also found the widespread distribution of rod form and coccus. The community of attached bacteria was investigated by performing Fluorescent in situ hybridization (FISH) analysis. a group was dominant in coal, wood and coccunt-based materials, ${\alpha},\;{\beta}\;and\;{\gamma}$ group ranged from 27.0 ${\sim}$ 43.0%, 7.1 ${\sim}$ 22.0%, 11.3 ${\sim}$ 28.6%, respectively. These results suggest that a group bacterial community appears to be regulated removal efficiency of organic material in water treatment process.

경골 내과에 발생한 견인 골단염(2예 보고)

박홍기,곽지훈,왕일환,Park, Hong-Gi,Kwak, Ji-Hoon,Wang, Il-Whan 대한족부족관절학회 2011 대한족부족관절학회지 Vol.15 No.4

9 and 10 years old boys presented with pain and swelling without history of trauma around medial malleolar right and left ankle. The swelling was diffuse with tenderness on anterior aspect of medial malleolus. The X-rays revealed fragmented accessory ossification center of medial malleolus an symptomatic side. Traction apophysitis was diagnosed because MRI revealed multiple foci of hypointensity in T1 and T2 weighted images of symptomatic medial malleolus apophysis. Patient was treated in conservative treatment by short leg cast for three or four weeks with restriction of sports activity and improved symptoms.

양측성 절구공이 족관절에서의 불유합 -1예 보고-

박홍기,이경찬,Park, Hong-Gi,Lee, Kyung-Chan 대한족부족관절학회 2005 대한족부족관절학회지 Vol.9 No.2

Ball-and-socket deformity of the ankle joint is a rare entity that is usually associated with inequality of leg length, fibular hyperplasia, coalition of the ankle, and ray deficiency. Etiology is unknown, congenital itself or secondary to congenital conditions in the ankle. Nonunion of medial malleolar is rare in bilateral ball and socket ankle joint without lower leg deformity. We report upon this case, and include brief reviwe of the literature.

SPOT 영상을 위한 번들조성에서 외부표정의 신뢰성

박홍기,Park, Hong Gi 대한토목학회 1992 대한토목학회논문집 Vol.12 No.1

항공사진보다 경제적인 SPOT 위성의 입체영상으로부터 지형도를 제작하는 것이 가능하게 되었다. 많은 학자들이 국가기본도 수정에의 적용가능성과 결과의 정확도를 분석하여 SPOT 영상은 1/50,000에서 1/100,000까지의 지형도에 적합하다고 발표하였다. SPOT 영상으로부터 지형도, 정사사진 및 수치지형모델을 제작하기 위해서는 정확한 외부표정요소를 알아야 하지만, 동적인 선형주사 영상인 SPOT 영상의 특성 때문에 사진측량에서 이용되어온 종래의 번들조정은 직접 사용되지 못한다. 신뢰성은 내적신뢰성으로 불리는 과대오차의 검출능력과 외적신뢰성으로 불리는 검출되지 않은 과대오차가 외부표정 결과에 미치는 영향을 나타낸다. 본 연구에서는 좌표계, 궤도방향 좌표의 표현방법, 외부표정 요소의 차수 및 기준점 배치에 따라 SPOT 영상의 신뢰성이 어떻게 달라지는가를 밝히고, SPOT 영상을 이용한 작업에서의 기초자료로 제공될 수 있는 외부표정에서의 이론적인 신뢰성을 분석하였다. Topographic mapping from economic SPOT stereo imagery than aerial photographs has become possible. Many of authors have studied the possibility of base map revisions and the accuracy of results. They have concluded that the SPOT image is suitable for 1/50,000 to 1/100,000 topographic map. For topographic map, orthophoto and DTM generation from SPOT imagery, accurate exterior orientation parameters are needed. But since the geometric characteristic of SPOT image is dynamic linear array imagery, the conventional bundle adjustment for photogrammetry can not be directly applied. Reliability is the ability to detect gross error, which is called the internal reliability, and the effect of non-detectable gross error on the results of exterior orientation, which is called the external reliability. This paper shows how the reliability of SPOT imagery depends on the different coordinate systems, presentations of coordinate for flight direction, orders of exterior orientation parameters and distribution of control points, and thus analyses the theoretical reliability of the exterior orientation, which can provide a basis for the planning of SPOT projects.

경비 인대 결합 나사못의 이상적인 삽입부위

박홍기,문선상,Park, Hong-Gi,Moon, Seon-Sang 대한족부족관절학회 2002 대한족부족관절학회지 Vol.6 No.1

Purpose: The purposes of the present study were to find the ideal insertion position syndesmosis screw and relation to the surrounding anatomical structures when indirectly inserting the screw anteriorly at a 30 angle at 3 cm proximal portion of the ankle join t. Materials and Methods: We performed computed tomography from the axial view in 20 normal individuals at 3 cm proximal portion of the ankle joint and divided the lateral side of the fibula into 4 sections. We drew a line from the middle of each of these 4 sections to the posterolateral tibia at a 30 angle and determined the relationship between each of these lines and the surrounding anatomical structures and confirmed the site at which each of these 4 lines passed through the posterolateral tibia which divided into 3 sections and the site of the fibula at which each of these lines passed through the middle 1/3 portion of the tibia. Results: The posterior 3/4 portion of the fibula that passed through the middle 1/3 portion of the posterolateral tibia in 18 cases. The portion did not approach the surrounding anatomical structures(Peroneal vessels and the muscular portion of FHL). Conclusion: The ideal insertion position of syndesmosis screw at 3 cm proximal portion of the ankle joint at a 30 angle is the posterior 3/4 portion of the lateral side of the fibula, and injury to the surrounding anatomical structures could be avoided when the screw passes through the middle 1/3 portion of the posterolateral tibia.

대축척 수치지도 기반의 정밀 공간정보 활용방안

박홍기(Park, Hong Gi),박현미(Park, Hyun Mi),박진이(Park, Jin Yi),김의명(Kim, Eui Myoung) 한국측량학회 2014 한국측량학회지 Vol.32 No.1

유전자 검색법을 이용한 상수원수와 정수처리 공정중의 병원성 미생물 검출 및 분포특성

박홍기(Hong Ki Park),정은영(Eun Young Jung),정종문(Jong Moon Jung),유평종(Pyung Jong Yu) 한국생명과학회 2007 생명과학회지 Vol.17 No.10

유전자 검색법(PCR)은 환경시료중의 병원성 미생물을 검출하는데 있어서 전통적인 배양법이 가지고 있는 문제점을 보완할 수 있는 장점을 지니고 있다. 이러한 PCR을 이용하여 부산시 취수원과 정수공정별 지점을 대상으로 병원성 미생물의 검출과 분포특성에 대해 조사하였다. 2004년 8월에서 2005년 10월까지의 실험 결과에 의하면 상수원수의 92개 시료중 80개 시료에서(87.0%) 병원성 미생물이 검출 되었고, Shigella spp. 46.2%, Yersinia spp. 40.7%, Legionella spp. 17.6% 그리고 Salmonella spp. 9.9%의 검출율을 각각 보였다. 원수중의 병원성 미생물은 늦은 가을에서 겨울에 걸쳐 주로 분포하는 특징을 보였으며, 지점별로는 매리 원수가 물금 원수보다 높게 검출되었다. 정수처리 공정별 실험에서는 Shigella의 검출빈도가 높았으나 모든 병원성 미생물은 후오존 처리 공정 단계에서 완전히 제거되는 것으로 나타났다. 따라서 부산시 정수장은 병원성 미생물에 대해 안전함을 알 수 있었다. The development of polymerase chain reaction (PCR) technology has the potential to solve for isolating pathogenic microorganisms from environmental samples than traditional plate counting methods. We have been detected pathogenic bacteria from raw water and water treatment process in Busan metropolitan city by PCR method. According to the result of survey from July 2004 to October 2005, 80 out of 92(87.0%) were positive for bacterial pathogens in raw water samples and positive rate of Shigella spp., Yersinia spp., Salmonella spp. and Legionella spp. were 46.2%, 40.7%, 17.6% and 9.9%, respectively. Pathogenic bacteria in raw water was mainly distributed through the lately Autumn to the winter and more highly detected Maeri than Mulgum region. During the period of survey in water treatment process, Shigella spp. was highly detected but all of bacterial pathogens were entirely removed after in post-ozonation step. These suggest that waters supplied in Busan metropolitan city may be safe against the pathogenic bacteria.

전위성 관절내 종골 골절의 관혈적 정복 시종골 후방 조면 골편 정복의 중요성

박홍기 ( Hong Ki Park ),백종륜 ( Jong Ryoon Baek ),최장석 ( Jang Seok Choi ),이상진 ( Sang Jin Lee ),백제원 ( Je Won Paik ) 대한골절학회 2016 대한골절학회지 Vol.29 No.4

목 적: 전위성 관절내 종골 골절의 치료 시 성공적인 관혈적 정복을 위한 요소로, 일차 골절 선에 의한 종골 후방 조면 골편 정복의 중요성을 확인하고자 하였다. 대상 및 방법: 2010년 1월부터 2015년 12월까지 전위성 관절내 골절로 관혈적 정복을 시행한 90예의 환자를 대상으로, 술후 3개월 후방 조면 골편의 외측 전위 정도와 건측과의 종골 길이 및 높이 차이를 측정하여 종골 후방 조면 골편의 정복 상태를 평가하였다. 골절부 간격 및 층 형성 정도, Bohler 각과 Gissane 각의 건측과의 차이를 측정하여 각각 후방 관절 소면 정복 상태와 종골 각도 회복을 평가하였다. 결 과: 후방 조면 골편의 정복 상태를 평가한 3가지 항목과 골절부 간격 및 층 형성의 상관계수는 각각 r=0.538, 0.467, r=0.505, 0.456, r=0.518, 0.493이었으며, 건측과의 두 가지 종골 각 차이와의 상관계수는 각각 r=0.647, 0.579, r=0.684, 0.630, r=0.670, 0.628이었다. 모든 항목 간의 p-value는 <0.01로 통계적으로 유의미한 상관관계를 보였다. 결 론: 종골 후방 조면 골편의 정확한 정복은 후방 관절 소면 정복 및 종골 각도 회복을 포함한 종골 체부의 해부학적 정복을 위한 중요한 요소로 생각된다. Purpose: We attempt to evaluate the significance of calcaneal posterior tuberosity fragment reduction when treated with surgical open reduction in displaced intra-articular calcaneal fractures. Materials and Methods: A total of 90 patients with displaced intra-articular calcaneal fracture, between January 2010 and December 2015, treated with open reduction and internal fixation were enrolled in this study. At postoperative 3 months, we evaluated the reduction state of calcaneal posterior tuberosity fragment by measuring the degree of lateral displacement of the posterior tuberosity fragment on the calcaneal axial view. Moreover, we also evaluated the difference in the calcaneal length and height with the uninjured side on the lateral view of both sides. In addition, we estimated the reduction state of the posterior facet by measuring the degree of gap and step-off on the semi-coronal view of postoperative computed tomography and estimated the restoration of calcaneal angle by measuring the difference in Bohler’s and Gissane angle with the uninjured side on the lateral view of both sides. Results: The correlation coefficient with 3 components for evaluating the reduction state of posterior tuberosity fragment and gap and step-off of posterior facet was r=0.538, 0.467, r=0.505, 0.456, r=0.518, and 0.493, respectively, and restoration of Bohler’s and Gissane angle was r=0.647, 0.579, r=0.684, 0.630, r=0.670, and 0.628, respectively. The relationship of each component shows a significant correlation as all p-values were <0.01. Conclusion: The precise reduction of calcaneal posterior tuberosity fragment developed by the primary fracture line was considered as an important process of anatomical reduction of calcaneal body, including the posterior facet and calcaneal angle restoration.