괴저가 동반된 당뇨병성 족부병변에 발생한 쉬파리속 구더기증: 증례 보고

박광환,장주혁,김태현,윤여권,박재한,석용준,용태순,이진우 대한족부족관절학회 2022 대한족부족관절학회지 Vol.26 No.3

Myiasis is the parasitic infestation of the body of a live animal by fly larvae that grow inside the host while feeding on its tissue. Necrotic tissue is a favorable environment for larvae to thrive, which can be seen easily in patients with a diabetic foot. Myiasis in a diabetic foot is rare but is constantly being reported. The common larvae genera causing myiasis are Calliphoridae, Sarcophagidae, and Muscidae. This paper reports a rare case of sarcophaga myiasis in a diabetic foot. To the best of the author’s knowledge, this is the first case report in Korea regarding human myiasis with the sarcophaga genus.

아무르 불가사리(Asterias amurensis)에서 추출한 Asterubine의 피부 미백효과

박광환,이순례,이용환 국제보건미용학회 2018 국제보건미용학회지 Vol.12 No.2

Recently, there have been many efforts to develop new compounds having skin whitening effects from natural products. The aim of this study was to assess the availability of Asterubine extracted from Asterias amurensis as a skin whitener through the evaluation of the inhibitory effects of melanogenesis in B16F1 melanoma cells. B16F1 cells were treated with Asterubine extracted from Asterias amurensis (10, 100 and 1,000 μM/mL, respectively) and incubated for 72 hours. B16F1 cells were treated with Asterubine (10, 100 and 1,000 μM/mL, respectively) and α-melanocyte stimulating hormone (α-MSH), simultaneously, and incubated for 72 hours. Content of melanin synthesis and tyrosinase activity were determined. The expressions of tyrosinase was measured by Western blot analysis. Treatment with 100 and 1,000 μM/mL Asterubine significantly decreased tyrosinase activity by 11.4% and 27.7%, respectively, compared to Asterubine non-treated group (p<0.05). Treatment with 1,000 μM/mL Asterubine significantly decreased melanin synthesis by 26.5%, compared to α-MSH alone group (p<0.05). Asterubine significantly inhibited expressions of tyrosinase induced by α-MSH. In conclusion, these findings indicate that Asterubine extracted from Asterias amurensis, which inhibits melanin synthesis and tyrosinase expression, is an effective skin whitening agent.

진구성 아킬레스 건 파열에 대한 단일 절개 술식을 통한 건이전술 및 재건술

박광환,김범수,이진우,Park, Kwang-Hwan,Kim, Bom-Soo,Lee, Jin-Woo 대한족부족관절학회 2009 대한족부족관절학회지 Vol.13 No.1

Purpose: The purpose of this study was to evaluate the clinical outcome of neglected Achilles tendon rupture treated with reconstruction and augmentation with flexor hallucis longus (FHL) tendon using one incision technique. Materials and Methods: Between July 2006 and March 2008, eleven patients with neglected Achilles tendon rupture received surgical treatment. Through one incision technique, augmentation with auto FHL tendon transfer was performed using a Bio-Interference screw (Arthrex, Naples, FL) and followed by V-Y advancement (5 cases) or gastronemius fascial turn-down flap procedure (6 cases). After mean follow up of 20.7 months (range, 11.8-33.3 weeks), clinical outcomes were evaluated with Visual Analogue Scale (VAS), American Orthopedic Foot and Ankle Society (AOFAS) score, 10 repetitive double heel raise test, 10 repetitive single heel raise test and subjective satisfaction. Results: The length of the gap after debridement was $5.4{\pm}2.0$ cm. The VAS improved from $4.1{\pm}0.9$ to $1.5{\pm}0.8$ at last follow up (p<0.05). The AOFAS score increased from $38.9{\pm}12.2$ to $91.5{\pm}8.9$ at last follow up (p<0.05). Eight patients were satisfied with excellent results and three were satisfied with good results. All patients were able to perform 10 repetitive double heel raise and nine out of eleven patients were able to perform 10 repetitive single heel raise at last follow up. There were no complications including deep infection or re-rupture. Conclusion: Augmentation with FHL tendon transfer and reconstruction with V-Y advancement or turn-down flap through one incision technique appeared to be effective and safe. This technique is recommendable for the treatment of neglected Achilles tendon rupture.

관절경적 미세골절술이 실패한 거골의 골연골 병변에 대한 치료로서의 재차 미세골절술

최우진,박광환,이모세,정광호,이진우,Choi, Woo Jin,Park, Kwang Hwan,Lee, Moses,Chung, Kwangho,Lee, Jin Woo 대한족부족관절학회 2015 대한족부족관절학회지 Vol.19 No.2

Arthroscopic treatment has been reported to provide effective improvement of ankle function when used in treatment of small osteochondral lesion of talus; however, favorable long-term results have been less predictable for large osteochondral lesion of talus. In cases in which primary arthroscopic treatment fails, the decision regarding which subsequent technique to choose has become increasingly difficult, as good clinical outcomes may be unlikely for such patients irrespective of the surgical technique used. Redomicrofracture should be used judiciously for treatment of osteochondral lesion of talus in which arthroscopic treatment has failed.

S.E.R.I. 수술법을 이용한 소건막류의 치료

김선용,박광환,이진우,Kim, Sun-Yong,Park, Kwang-Hwan,Lee, Jin-Woo 대한족부족관절학회 2010 대한족부족관절학회지 Vol.14 No.1

Purpose: The purpose of this study was to evaluate the clinical and radiological outcomes of the S.E.R.I. (simple, effective, rapid, inexpensive) operation for the bunionette deformity. Materials and Methods: Between March 2005 and February 2009, 22 patients (26 feet) who had been treated for the bunionette deformity with minimally invasive osteotomy were reviewed retrospectively. Clinically, Visual Analogue Scale (VAS), American Orthopaedic Foot and Ankle Society (AOFAS) score, shoes selectivity, disappearance of callus and patient's satisfaction level by Coughlin scoring system were evaluated. Radiologically, the bunionette was classified as four types according to the Fallat classification. The 4-5$^{th}$ intermetatarsal angle (4-5$^{th}$ IMA), the 5$^{th}$ metatarsophalangeal angle (5$^{th}$ MPA) and the length of 5th metatarsal bone (5$^{th}$ MTL) were analyzed at preoperatively and at final follow up visit. Results: VAS improved from $6.8{\pm}1.8$ points to $2.2{\pm}1.8$ points (p<0.05). AOFAS score improved from $54.0{\pm}14.2$ points to $90.0{\pm}4.8$ points (p<0.05). There was no change in shoes selectivity. 9 feet (34.6%) were satisfied with excellent results, 16 feet (61.5%) with good results and 1 foot (3.9%) with fair results. The average 4-5$^{th}$ IMA was corrected from $10.1{\pm}2.3^{\circ}$ to $4.4{\pm}1.7^{\circ}$ (p<0.05). The average 5$^{th}$ MPA was corrected from $11.5{\pm}8.6^{\circ}$ to $-0.1{\pm}4.1^{\circ}$ (p<0.05). The average 5$^{th}$ MTL was changed from $66.1{\pm}4.3$ millimeters to $64.1{\pm}4.4$ millimeters (p=0.069). There was no malunion, nonunion or delayed union and other perioperative complications. Conclusion: S.E.R.I. operation is less invasive and easy technique. This procedure is recommendable for the treatment of the bunionette deformity.

전기비저항 토모그래피를 이용한 저수지 제체 양안부에 대한 효과적인 해석방법 연구

용환호,박광환,김창하,임진택 대한지질공학회 2022 대한지질공학회 학술발표회논문집 Vol.2022 No.2

농업용 저수지 제체 안전관리를 위한 전기비저항 방법의 효과적인 접근

용환호,박광환,황가영,송세정 대한지질공학회 2022 대한지질공학회 학술발표회논문집 Vol.2022 No.1

중년층의 구강건강지식, 실천 및 보철치료 만족실태 조사

고은정,이용환,박광환,Go, Eun-Jeong,Lee, Yong-Hwan,Park, Kwang-Hwan 한국치위생학회 2011 한국치위생학회지 Vol.10 No.2

Objectives : The purpose of this study was to examine the oral health knowledge and actual oral health care of the selected subjects, their decision making about prosthetic treatment, the state and characteristics of their prosthetic treatment and their satisfaction with prosthetic treatment in an attempt to provide some information on the improvement of the quality of life related to oral health and the promotion of oral health. Methods : The subjects in this study were 250 people who received education in two different lifelong education institutions in the city of Busan. After a survey was conducted from May 23 to June 15, 2011, the answer sheets from 217 respondents were analyzed. Results : 1. As for the general characteristics of the respondents, the men(52.1%) outnumbered the women. Those who were in their 60 and up(47.5%) made up the largest age group, and the married people(65.4%) outnumbered the unmarried ones. By occupation, the company employees(20.3%) made up the biggest group. By education, the greatest group was high-school graduates(36.1%). By monthly mean income, the biggest group gained an income of 2.01 million won or more(36.9%). As to medical security, community-based insurance was most prevailing (36.9%). In terms of health promotion, the largest group worked out to stay fit(52.4%). 2. Regarding oral health knowledge, they had a good knowledge about the cause of dental caries(56.7%), but they weren't well aware of the right time for regular dental checkup(47.9%). In relation to oral health care, regular scaling wasn't prevailing(16.9%). 3. Regarding connections between the general characteristics and satisfaction with prosthesis, the less-educated respondents expressed significantly more dissatisfaction(p=0.015). By monthly mean income, those who had a smaller income were dissatisfied in general(p=0.028). Conclusions : The findings of the study illustrated that it's required to spread awareness of the importance of oral health among people in general, and that differentiated incremental oral health care should be provided for different age groups. In order to raise the satisfaction of patients with prosthesis, how to relieve their pain and anxiety and how to adjust prosthetic treatment cost properly should carefully be considered. In addition, the government should take measures to offer assistance for the low-income classes in preparation for an increase in the elderly population.

여대생의 중저가 브랜드 화장품의 재구매 의사결정 요인

오경희,강은란,박광환,이용환 국제보건미용학회 2013 국제보건미용학회지 Vol.7 No.1

Diagnosis and Operation Results for Chronic Lateral Ankle Instability with Subtle Cavovarus Deformity and a Peek-A-Boo Heel Sign

심동우,서재완,박광환,이진우,변준우,한승환 연세대학교의과대학 2020 Yonsei medical journal Vol.61 No.7

Cavovarus deformity is considered an anatomical risk factor for chronic lateral ankle instability (CLAI). However, subtle deformity can be difficult to detect, and its correction is controversial. The current study aimed to evaluate clinical and radiographic outcomes of a modified Broström procedure (MBP) with additional procedures for CLAI with subtle cavovarus deformity and a positive peek-a-boo heel sign. We reviewed the records of 15 patients who underwent MBP with additional procedures for CLAI with a positive peek-a-boo heel sign between August 2009 and April 2015. Consecutive physical and radiographic examinations were performed. The visual analog scale (VAS) for pain, the American Orthopedic Foot and Ankle Society (AOFAS) ankle-hindfoot score, and the Karlsson-Peterson (KP) ankle score were applied to assess clinical outcomes. Weight bearing radiographs, hindfoot alignment view, and ankle stress radiographs were also examined. The mean follow-up period was 58.5 months. Calcaneal lateral closing wedge osteotomy was performed in seven patients to correct fixed hindfoot varus, and first metatarsal dorsiflexion osteotomy was performed in 11 patients to correct plantarflexion of the first ray. Three patients underwent both procedures. Mean VAS, AOFAS, and KP ankle scores improved significantly (p=0.001), and instability did not recur. Radiographically, all stress parametersimproved significantly (p=0.007). Simultaneous correction of a positive peek-a-boo heel sign and cavovarus deformity with MBP for CLAI improves clinical outcomes and prevents recurrent instability. A comprehensive evaluation and cautious approach for subtle cavovarus deformity should be followed when treating patients with CLAI. This trial is registered on Clinical Research Information Service (CRiS, KCT0003287).