나사못을 이용한 제 1 중족 족지 관절 유합술

서우영,성일훈,조현중,Seo, Woo-Young,Sung, Il-Hoon,Cho, Hyun-Jung 대한족부족관절학회 2009 대한족부족관절학회지 Vol.13 No.2

Purpose: The aim of this study was to retrospectively evaluate the clinical and radiological results of the first metatarsophalangeal joint arthrodesis with two crossed screws fixation. Materials and Methods: We treated 23 patients (24 cases) with arthrodesis of the first metatarsophalangeal joint using two crossed screws fixation between December 2000 and May 2005. There were 3 male patients and 20 female patients. Ages ranged from 28 to 74 years (mean, 50 years). Follow-up ranged from 4.1 to 8.2 years (mean, 6.5 years). The American Orthopaedic Foot and Ankle Society (AOFAS) score and their satisfaction was evaluated clinically, foot anteroposterior and lateral radiograph, radiologically. Results: Of the 24 cases, 6 had surgery for dorsal plate and screws fixation because of failure to acquire firm fixation with two crossed screws fixation. All 6 cases acquired bony union. Fusion of the hallux first metatarsophalangeal joint occurred in 16/18 cases (89%). Nonunion occurred in 2 cases (11%) and was asymptomatic. At last follow-up, hallux valgus angle ranged from 11 to 25 degrees(mean, 17.7 degrees), dorsiflexion ranged from 15 to 25 degrees (mean, 22 degrees).The mean preoperative AOFAS score of 37 points(range, 28 to 45 points) improved to a mean of 77 points (range, 65~90 points) postoperatively. The result of the procedure as rated subjectively by the patient was excellent for 5 cases, good for 11 cases and fair for 2. Conclusion: Comparatively, the arthrodesis of the first metatarsophalangeal joint with crossed screws fixation showed a satisfactory clinical results, we thought that require technical attention for firm fixation in operation.

척추경 나사못 주위에 발생한 방사선 투과대가 불유합을 의미하는가?

서우영(Woo-Young Seo),박예수(Ye-Soo Park),조재림(Jae-Lim Cho) 대한정형외과학회 2009 대한정형외과학회지 Vol.44 No.3

목적: 척추경 나사못 고정술후 나사못 주위에 발생한 방사선 투과대가 가지는 임상적 의의를 후향적 연구를 통해 알아보고자 하였다. 대상 및 방법: 2003년 5월부터 2005년 12월까지 퇴행성 요추 질환으로 척추경 나사못 고정술 및 후측방 유합술을 받은 환자 중 2년 이상 추시가 가능하였던 124예를 대상으로 하였다. 방사선 투과대의 관찰은 단순 방사선 사진을 이용하여 단분절(2분절 이하), 장분절(3분절 이상) 및 천골 고정 유무에 따라 4개의 군으로 나누었다. 골다공증, 나사못의 위치, 골유합 정도, 천골의 전방 피질골 고정 유무에 따라 비교 분석하였다. 결과: 124예 846개의 나사못 중 71 (57%)예, 189 (22%)개의 나사못에서 투과대가 관찰되었으며 천골 고정을 시행한 경우 151개 (27%), 천골 고정을 시행치 않은 경우 38개(13%)로 통계적 차이(p=0.001)를 보였다. 나사못 주위 투과대는 천골 고정시 전방 피질골 고정을 시행한 경우 및 골유합이 보다 잘 되었을 경우 통계학적으로 감소하였으며 골다공증(T score: -2.5 이하)이 있는 경우에는 660개 중 157개(24%)로 증가하는 소견을 보였다. 결론: 척추경 나사못 고정술후 나사못 주위에 발생 가능한 방사선 투과대는 천골을 포함한 고정 유합술, 가관절증과 관련하여 흔하게 나타났으며 대부분 완전 골유합 이전에 나타났다. 골다공증 및 천골 고정시 고정 술식 등 다양한 요소를 고려해야 하며 완전 골유합 이후에도 진행하는 경우에는 주의 깊은 추시 관찰이 필요할 것으로 사료된다. Purpose: We wanted to retrospectively evaluate the clinical significance of radiolucent zones surrounding the pedicle screws after spinal fusion. Materials and Methods: Spinal surgery was performed between May 2003 and December 2005 on elective patients with degenerative lumbar disorders and they underwent transpedicular screw fixation and posterolateral fusion and these patients were the subjects of the study. There were 124 cases with more than 2 years of follow up. Determination of the radiolucent zones around pedicle screws was done using simple x-rays and the cases were divided in to 4 different groups: segmental fixation with short (2 or less segments) or, long (3 or more segments) segmental fixation and those cases with or without sacral fixation. Comparative analysis was done according to osteoporosis, the location of the pedicle screws, the degree of bony-union and fixation of the anterior cortex of the sacrum. Results: Among the 124 cases and 846 pedicle screws, 189 pedicle screws (22%) had radiolucent zones; 151 of the 189 pedicle screws with a radiolucent zone (27%) were in the sacral fixed group, while 38 of the 189 pedicle screws with a radiolucent zone (13%) were in the non-sacral fixed group, and the difference was significant (p=0.001). In the case of anterior cortical fixation in the sacral fixed group and the complete bony-union, the radiolucent zones had a significantly lower incidence, while the group of patients with osteoporosis (a T score lower than -2.5) had a higher incidence of radiolucent zones. Conclusion: The radiolucent zones surrounding the pedicle screws after spinal fusion were closely related to spinal fusion with sacral fixation and pseudarthrosis, and these radiolucent zones mostly occurred before complete bony-union. The existence of osteoporosis and the techniques of sacral fixation and many different contributing factors must be considered, and careful monitoring is needed even if the radiolucent zone progressive after complete bony-union.

멀티터치를 이용한 한글 입력 방식에 관한 연구

서우영 ( Woo-young Seo ),오한울 ( Han-wool Oh ),박홍진 ( Hong-jin Park ),김현수 ( Hyun-su Kim ),조현중 ( Hyeonjoong Cho ) 한국정보처리학회 2009 한국정보처리학회 학술대회논문집 Vol.16 No.2

최근 모바일 기기에서 입력방식으로 사용되기 시작한 멀티터치 입력방식은 지금까지와는 다른 다양한 방식의 입력을 가능하게 하였다. 기존 싱글 터치 입력 방식을 사용한 모바일 한글 입력방식의 특징을 파악하고 이를 기반으로 멀티터치 입력방식에 접목시켜 한글 입력방식을 연구함으로써 좀 더 직관적이고 차별화된 인터페이스를 제안한다.

디지털 영상을 이용한 무지 외반증 변형각 측정에서 서로 다른 두 계측 방법의 비교

성일훈,김기천,성창호,서우영,이두연,조영아,Sung, Il-Hoon,Kim, Ki Chun,Sung, Chang-Ho,Seo, Woo-Young,Lee, Doo-Yeon,Cho, Young A 대한족부족관절학회 2013 대한족부족관절학회지 Vol.17 No.1

Purpose: To study inter- and intra-observer reliabilities of computerized measurements of the angular parameters of hallux valgus deformity, using two different kinds of software tools for angle measurement on the digital radiography. Materials and Methods: On 35 digital radiographies of standing foot anteroposterior view of hallux valgus, two observers (A, B) independently measured hallux valgus angle (HVA) and 1-2 intermetatarsal angle ($IMA_{1-2}$) twice, using two methods. In method I, an angle was determined from duplicated lines to longitudinal axes made for bisecting line on the target bones with software tool. In method II, an angle was calculated automatically and directly from bisecting lines (longitudinal axes) made on the target bones. We compared two methods using paired t-test to determine significance of differences. Inter- and intraobserver reliabilities were evaluated using the intraclass correlation coefficients (ICC). Results: There were no significant differences between measurements of method I and II for each observer (p>0.05) and intraobserver reliability were good. (ICC>0.9) Inter-observer reliability for method I and II was good of the HVA (ICCs, 0.912 and 0.905) and moderate of the $IMA_{1-2}$ (ICCs, 0.505 and 0.537). There were interobserver differences in HVA of method I and II. Conclusion: No significant difference was found statistically between measurements of method I and II. Both methods I and II would be acceptable to measure angular parameters of hallux valgus deformity.

무지 외반증 각변형에 대한 디지털영상의 전산화 계측: 100%와 150% 확대영상에서의 계측비교

성일훈,이두연,성창호,서우영,Sung, Il-Hoon,Lee, Doo-Yeon,Sung, Chang-Ho,Seo, Woo-Young 대한족부족관절학회 2012 대한족부족관절학회지 Vol.16 No.1

Purpose: To study computerized measurements of angular parameters on 100% and 150% resized digital radiography of hallux valgus deformity Materials and Methods: 30 digital radiography of standing foot anteroposterior view of hallux valgus patients were included. Two observers(A, B) independently measured hallux valgus angle (HVA), 1-2 intermetatarsal angle (IMA), and distal metatarsal articular angle (DMAA) in two times on both 100%-size and 150% magnified images respectively, using computerized measurement software tools. The results were interpreted with the statistical software program, Statistical Analysis System, version 9.2. Results: In repeated measurements of each observer, measurements on 150% magnified image showed no differences of all three parameters and with 100%-size image, there were differences of HVA (observer A) and 1-2 IMA (observer B) (p>0.05). When testing interobserver reliability, both observers showed differences in measurement of HVA and DMAA (p<0.05), but no differences in measurement of 1-2 IMA in both images. Within the 95% confidence interval, limits of error of measurements between two observers on HVA, IMA and DMAA were $2.7^{\circ}$ $1.4^{\circ}$ and $5.0^{\circ}$ respectively in 100%-size images, and $2.6^{\circ}$, $1.6^{\circ}$ and $4.7^{\circ}$ respectively in 150% magnified images. Conclusion: In computerized measurements for angular parameters of hallux valgus with digital radiography, 150% magnified images showed intraobserver reliability. Both 100% and 150% magnified images failed to show interobserver reliability. Measurement of 1-2 IMA in both 100% and 150% images showed less interobserver error.

75세이상 대퇴골 경부 골절에서 시행한 무시멘트 대퇴스템을 이용한 양극성 골두 치환술

최일용 ( Il Yong Choi ),서우영 ( Woo Young Seo ),김영호 ( Young Ho Kim ) 대한고관절학회 2008 Hip and Pelvis Vol.20 No.2

목적: 골다공증을 동반한 고령 환자의 대퇴골 경부 골절에서 무시멘트 대퇴스템을 이용한 양극성 골두 치환술을 시행한 후 임상적, 방사선학적 결과를 알아보고자 하였다. 대상 및 방법: 2002년 3월부터 2004년 7월까지 대퇴골 경부 골절로 Zweymuller (Plus Orthopedics AG, Rotkreuz, Switzerland)형 무시멘트 대퇴스템을 이용한 양극성 골두 치환술을 받은 75세 이상의 환자 중 추시 기간 동안 사망한 1명을 제외한 47명, 48례를 대상으로 하였다. 남자가 11명, 여자가 36명이었다. 수술 당시 평균 연령은 81세(75~94세)였으며 평균 추시 기간은 42개월(24~58개월)이었다. 모든 례에서 골밀도를 측정하여 골다공증 여부를 확인하였고, 모든 례에서 골수강 확대율(canal flare index)를 측정하여 대퇴강 형태를 측정하였다. 결과: 골절환자의 평균 골밀도는 T 점수 -3.9(-2.9~-5.3)이었고 대퇴강 형태가 연통(stove pipe) 형인 경우가 33례( 69 %)이었다. 수술 후 최종 추시상 통증에 대한 평균Visual analogue scale(VAS) score는 2.7(1~6)점이었고 평균 Harris 고관절 점수는 85(75~93)점이었다. 13례(27%)에서 서혜부 통증을 호소하였으며 1례에서만 중등도의 통증, 나머지는 경도의 통증을 호소하였다. 방사선학적으로 모든 대퇴스템에서 골용해 및 해리가 관찰되지 않았으며 대퇴스템의 침강 없이 안정 골성 고정을 유지하였다. 결론: 골다공증을 동반한 고령의 대퇴골 경부 골절 환자에서 Zweymuller형 무시멘트 대퇴스템은 쐐기형 스템 형태에 의해 대퇴강내에서 조기 고정을 얻을수 있었고 grit-blasted 표면처리에 의해 이차적 안정성을 얻을수 있어 양호한 임상적 결과를 나타내었다. Purpose: This study examined the clinical and radiographic outcomes of uncemented bipolar hemiarthroplasty for femoral neck fractures in elderly patients with osteoporosis Materials and Methods: Between March 2002 and July 2004, 48 uncemented bipolar hemiarthroplasty procedures (Zweymuller, Plus Orthopedics AG, Rotkreuz, Switzerland) for femoral neck fractures were performed in 47 patients older than 75 years of age. Of the 48 patients, 1 patient died during the follow-up period. There were 11 men and 36 women. The mean age of the patients at the time of surgery was 81 years (range, 75 ~ 94 years), and the mean follow up period was 42 months(range, 24 ~ 58 months). The bone mineral density and canal flare index of the proximal femur were measured in all patients. Results: The mean bone mineral density (T score) was -3.9 points (range, -2.9 ~ -5.3) and the proximal femoral morphology showed stove pipe shapes in 33 hips. At the last follow up, the mean Harris hip scores and visual analogue scale score was 85 (range, 75~93) and 2.7 (range, 1 ~ 6)points, respectively. Inguinal pain was observed in thirteen hips, among which the degree of pain was moderate in 1 and mild in 12. Radiologically, none of the stems showed evidence of osteolysis and aseptic loosening, and remained well osseointegrated without subsidence. Conclusion: Uncemented bipolar hemiarthroplasty using a Zweymuller stem in elderly patients associated with osteoporosis can provide favorable clinical and radiographic results because the stem imparts good primary stability due to its rectangular tapered shape and long-term secondary stability due to excellent osseointegration on the gritblasted surface.

소아에서 발생한 외상성 후 경골 동맥 가성동맥류 -1예 보고-

김태승 ( Tai Seung Kim ),황건성 ( Kuhn Sung Whang ),서우영 ( Woo Young Seo ) 대한골절학회 2007 대한골절학회지 Vol.20 No.1

가성동맥류는 외상에 의해 발생하는 합병증으로서, 주로 성인에서 그 발생 보고가 있었으며 소아에서의 발생 보고는 드물다. 본 증례는 7년 10개월된 여아로서 우측 하지에 종괴와 통증을 주소로 내원하였으며, 방사선 소견상 우측 경골에 침식 현상이 뚜렷하여 연부조직종양에 의한 만성 압박을 의심케 하였다. 그러나 과거력상 내원 11개월 전 우측 경골 간부 골절이 발생하여 도수정복 및 경피적 K- 강선 삽입술을 받은 적이 있었으며, 혈관조영술 결과에서 후 경골 동맥으로부터 발생한 가성동맥류의 형성이 관찰되어, 가성동맥류의 진행 결과로 판명되었다. 치료는 후 경골 동맥을 가성동맥류의 근위부와 원위부에서 결찰한 후 종괴를 절제하였다. 수술 후 5년이 경과하였으며 족부의 모양과 기능은 정상이었다. 결국 가성동맥류의 형성이 골절 골편에 의한 것으로 추정되지만 한편 소아 골절에서 빈번히 사용되는 K- 강선에 의한 가능성도 배제할 수는 없었다. Pseudoaneurysm is one of the complications of arterial injuries by trauma. The case report in children is rare, although not in adult. A 7-year and 10-month girl was visited with the complaints of pain and a mass in her right leg. At first, the radiograph of right tibia showed a remarkable cortical erosion from without, suggesting mass effect by a soft tissue tumor. She had a history of fracture of right tibia, and then manipulative reduction and K-wire fixation at 11 months ago. Arteriography showed a formation of the pseudoaneurysm originated from the posterior tibial artery. The operation was done through the ligation of artery at proximal and distal to pseudoaneurysm, and then excision of mass. At 5 year follow-up, the configuration and function of right foot was normal. Eventually, the cause of the mass formation is thought by the trauma of fracture fragment at the time of accidents, but the possibility of penetrated injuries by K-wire should be ruled out, which is used frequently in children`s fracture. We experienced a case of traumatic pseudoaneurysm of posterior tibal artery with tibial fracture, especially occurred in pediatric patient, and presented the result of long-term follow-up.

유자액을 이용한 소스의 이화학적 특성 및 저장성

유경미,서우영,서한석,김완수,박재복,황인경 한국조리과학회 2004 한국식품조리과학회지 Vol.20 No.4

The purposes of this study were to investigate the physicochemical characteristics and storage stabilities of various sauces with added Yuza(Citrus Junos). Yuza consisted of three parts: peeled (46.17%), fleshed (43.74%) and seeded (10.09%). Yuza juice revealed 11.33% extraction yield, pH 2.85, 4.18% total acidity, 11° Brix, 1.16% transmittance and 2.63° Brix/acid ratio. Five kinds of sauces with added Yuza juice were Yuza red pepper paste sauce, Yuza soybean sauce for meat, Shahu shabu Yuza sauce, Korean Yuza vegetable sauce and Japanese Yuza soybean sauce. These sauces showed slight changes in pH, total acidity, total bacterial counts and overall sensory characteristics during storage period (60 days). In conclusion, Yuza juice could be applied to various sauces, which remained usable for 60 days.