• Archives of Plastic Surgery
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• 제38권3호
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• pp.329-332
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• 2011

Purpose: In developed countries, vesicovaginal fistula occur from various pelvic operations including total hysterectomy, leading to urinary leakage and incontinence. Although various methods have been proposed for adequate tissue coverage in fistula repair, the surgical treatment of is not simple and still controversial. We report a case of neobladder-vaginal fistula repair using modified Martius fat pad flap. Methods: A 62-year-old female patient underwent radical cystectomy with total abdominal hysterectomy and neobladder formation due to invasive bladder tumor 5 years ago. For 3 years following the operation, urine leakage was observed. Exploration demonstrated neobladder-vaginal fistula and primary repair including fistulectomy and direct closure was performed. Urinary incontinence relapsed 2 years after primary repair, and after demonstrating the recurrence of fistula on urography, repair of recurrent fistula was performed. After dissection of vagina and neobladder and closure of fistula by urologic surgeon, fibroadipose flap was elevated, rotated and advanced through the tunnel at vaginal sidewall, and interpositioned to the fistula site between neobladder and vagina. Results: There was no acute complication after the surgery and urethral catheter was extracted on the 8th day after the operation. During six month follow-up period after the operation, there is no clinical evidence of fistula recurrence. Conclusion: From our clinical experience and literature review, we think Martius fat pad flap is a useful technique in management of neobladder-vaginal fistula, for it provides enough vascularity, major epithelization surface and better lymphatic drainage, and also prevents overlapping of vesical, vaginal suture lines at the same time.

• Clinics in Shoulder and Elbow
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• 제9권1호
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• pp.105-110
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• 2006

Purpose: This study reports the clinical results of the arthroscopic Bankart repair in traumatic anterior instability of the shoulder with bio-knotless anchor. Materials and Methods: 21 cases of 21 patients (20 male and 1 female) were included in this study. The average age was 24.8 years old and the period from the first injury to operation was average 37.2 months. All cases had Bankart lesion and 12 cases had Hill-Sachs' lesion. The SLAP lesion was associated in 6 cases. Preoperative Rowe score was average 29.1. Arthroscopic Bankart repair with bio-knotless anchor were performed in all cases; 3 anchors at 3, 4, 5 O'clock position of the glenoid were used in 11 cases and 2 anchors at 4, 5 O'clock position were used in 10 cases. All the associated SLAP lesions were repaired arthroscopically with bio-knotless anchor. Thermal capsular shrinkage at the anterior and inferior shoulder capsule after the Bankart repair was performed in 3 cases. The average follow up period was 20.2 months. Results: The Rowe score improved to 92.8, excellent in 17 cases and good in 4 cases, at last follow up period and 20 cases had full range of motion of the shoulder. 1 case had mild limited range of motion of the shoulder (150 degrees in flexion, 60 degrees in external rotation and T12 level in internal rotation) without any problem in normal activity. The arthroscopic revision surgery of the shoulder was performed in 1 case because of multiple traumatic injuries of the shoulder with pain postoperatively. Conclusion: Arthroscopic Bankart repair with bio-knotless anchor in traumatic anterior shoulder instability is one of the good methods because of the good clinical results.

• 한국콘크리트학회:학술대회논문집
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• 한국콘크리트학회 2008년도 춘계 학술발표회 제20권1호
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• pp.621-624
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• 2008

콘크리트 구조물에 적용되는 보수재료는 적용되는 환경요인에 따라 품질특성이 다르게 나타난다. 국내의 보수재료에 대한 내구성 평가는 다양한 환경요인에 따른 시험법의 미비로 내구성에 대한 품질성능이 확보되지 않은 실정이다. 본 연구에서는 국내에서 생산되는 보수재료에 대하여 적용환경에 따른 동결융해저항성능을 BS EN 13687에 준하여 시험하였고, 국내시험규격(KS F 4716)과 비교 분석하였다. 연구결과 건습반복과 염수침지동결융해 시험 후의 부착강도 값은 보수재료의 종류 및 시편의 크기에 따라 다소 큰 차이가 나타났다. 보다 양호한 보수재료의 품질관리를 위해서는 적용환경에 따른 다양한 동결융해저항시험방법에 대한 규격제정이 요구된다.

• Journal of Chest Surgery
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• 제56권2호
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• pp.75-86
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• 2023

Background: We investigated the long-term outcomes of truncus arteriosus repair at a single institution with a 30-year study period. Methods: Patients who underwent repair of truncus arteriosus between 1993 and 2022 were reviewed retrospectively. Factors associated with early mortality, overall attrition, and reintervention were identified using appropriate statistical methods. Results: In total, 42 patients were enrolled in this study. The median age and weight at repair were 26 days and 3.5 kg, respectively. Thirty patients (71.4%) underwent 1-stage repair. There were 8 early deaths (19%). In the univariable analysis, undergoing surgery before 2011 was associated with early mortality (p=0.031). The overall survival rate at 10 years was 73.8%. In the multivariable analysis, significant truncal valve (TrV) dysfunction (p=0.010), longer cardiopulmonary bypass time (p=0.018), and the earlier era of surgery (p=0.004) were identified as risk factors for overall mortality. During follow-up, 47 reinterventions were required in 27 patients (64.3%). The freedom from all-cause reintervention rate at 10 years was 23.6%. In the multivariable analysis, associated arch obstruction (p<0.001) and significant TrV dysfunction (p=0.011) were identified as risk factors for all-cause reintervention. Arch obstruction (p=0.027) and a number of TrV cusps other than 3 (p=0.014) were identified as risk factors for right ventricle to pulmonary artery (RV-PA) reintervention, and significant TrV dysfunction was identified as a risk factor for TrV reintervention (p=0.002). Conclusion: Despite recent improvements in survival outcomes after repair of truncus arteriosus, RV-PA or TrV reinterventions were required in a significant number of patients during follow-up.

• 한국콘크리트학회:학술대회논문집
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• 한국콘크리트학회 2004년도 춘계 학술발표회 제16권1호
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• pp.160-163
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• 2004

In domestic, various repair materials and method systems to keep up with these reinforced concrete deteriorated due to salt damage, carbonation, chemical decay et. developed and applied. However, on-site quality control of various repair materials and method systems isn't achieved desirably because it is depend completely on a men of experience' opinions above all else regardless of various on-site environments. In this background, mock up test with due regard to real on-site environments was performed to secure fundamental data for establishment of desirable on-site quality control. Mock up test using repair mortar analyzed from angles of construction methods, mechanical spraying pressures, W/M. Construction methods were designed manpower method and spraying method, spraying pressures were designed 32, 42, 52 psi, W/M were designed 14.4, 15.4, $16.4\%$. And compressive strength, Chloride ion diffusion coefficient, bond strength, SEM. of mock up test specimens were evaluated. In conclusion, we confirmed excellency of mechanical spraying pressures, fined extremely excellency of condition of spraying pressure 42 ps, W/M $14.4\%$ within this study. therefore the results of this study will be useful to provide fundamental data for establishment of desirable on-site quality control.

• Clinics in Shoulder and Elbow
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• 제6권2호
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• pp.161-166
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• 2003

Purpose: To evaluate the usefulness of arthroscopic repair that was related with full thickness rotator cuff tear and assess clinical result. Materials and Methods: Twenty-one cases of arthroscopically repaired full thickness tear of rotator cuffs were studied. Between October 1998 to July 2002 we have analysed 21 repairs of FTRCT the average age 54(42∼74) years old, mean follow-up was 24(12∼41) months We analyzed the results statistically by paired t-test. Results: Postoperative VAS of pain improved average 7.2 to 1.9, UCLA score improved 13.9 to 31.9, ADL improved 11.5 to 25.5 respectively(all, p<0.001). Eighty-seventh ％ of the patients showed excellent St good results at the final follow-up. The satisfied rate was 90.5%(19cases). Conclusions: Arthroscopic repair in full thickness rotator cuff tear is effective surgical methods.

• Journal of Advanced Marine Engineering and Technology
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• 제23권3호
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• pp.331-337
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• 1999

Cracks on the cylinder block of diesel engines will often happen due to cyclic load and thermal stress. According to the Classification Societies' rules welding reparis of cylinder block made of cast irons are generally not permitted. However such welding repairs became inevitable taking enormous cost and time for their renewal into consideration. In this study repair welding methods for the clinder blocks made of gray cast irons were reviewed and the tests of their welds were carried out in order to purpose the repair welding meth-ods of packing seat and o-ring seat of cylinder block and apply them to the practice. The following conclusions are botained :1 The tensile strength of weld of cast iron more than that of base metal can be obtained by means of preheating keeping temperature above $100^{\circ}C$ between welding pass-es preventing slag inclusion peening and cramping weld metal by studs. 2. The suspected crack by a magnetic particle test due to different magnetic permeability can be identified which are not associated with a mechanical discotinuity.

• 한국습지학회지
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• 제26권2호
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• pp.139-146
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• 2024

노후된 관거 및 지하구조물의 균열 보수에 아스팔트계 주입재, 우레탄계 주입재, 시멘트계 주입재, 아크릴계 주입재 등 다양한 주입재가 사용되고 있다. 친환경적이고 습윤상태에서 경화가 잘되고 온도변화에 안정적인 물성을 갖는 아크릴계 누수 보수재에 대하여 연구하였다. 개량된 아크릴 누수 보수재와 기존 아크릴레이트 주입재의 성능 비교를 위하여 KS 규격의 실험방법에 준용하여 수중침지 길이변화율 시험, 수중 유실 저항성 시험, 내화학 성능시험을 실시하였다. 비교 실험해 본 결과 개량된 아크릴 누수 보수재는 기존 아크릴레이트 주입재보다 습윤상태, 온도변화, 화학적 반응에 따른 수축변화가 없었고 수중 저항성 실험에서 유실되지 않았다. 또한, 개량된 아크릴 누수 보수재의 환경적 영향성을 알아보기 위해 어류급성독성 실험과 급성경구독성 실험을 진행하여 관찰해 본 결과 실험체의 사망률이 없었고 특별한 유의점이 발견되지 않았다. 본 연구의 실험결과 개량된 아크릴 누수 보수재가 성능적으로 우수하고 환경적으로 안전하고 인체에 무해하다고 판단되었다. 본 연구의 다양한 실험결과 기존의 아크릴레이트 보수재보다 개량된 아크릴 누수 보수재가 관거 및 지하구조물 균열 부위의 보수재로 사용되기 적합하다고 사료된다. 본 연구는 아크릴 누수 보수재에 대한 적용성 평가에 대한 연구로 향후 기술 개발에 활용자료로 제안하고자 한다.

• 비파괴검사학회지
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• 제27권3호
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• pp.268-279
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• 2007

The reliability of cold-bonding repair technique of carbon-fiber reinforced plastics (CFRP) laminates, often used as a temporary repair for the airplane maintenance, has been evaluated during cyclic loading and localized heating by nondestructive methods. Major concern was given to the evolution of damage after repair in the form of delaminations due to localized heating and cyclic loading combined. An area of interest both on the specimen repaired by cold-bonding and the specimen without repair where delaminations were induced by localized heating and cyclic loading was monitored by acoustic emission (AE) testing and further examined by pitch-catch low-frequency bond testing, and pulse-echo high-frequency ultrasonic testing. The results showed that the reliability of cold-bonding repair would be significantly reduced by the localized heating and cyclic loading combined rather than by the cyclic loading only. AE monitoring appeared to be an effective and reliable tool to monitor the integrity of temporarily repaired CFRP laminates in terms of the structural health monitoring (SHM) philosophy.

• 대한물리의학회지
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• 제15권1호
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• pp.55-63
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• 2020

PURPOSE: This study examined the effects of handgrip exercise, which was started two weeks after surgery for shoulder rotator cuff repair, on the extent of muscle activation around the shoulder and the cross-sectional area of the supraspinatus muscle. METHODS: Among patients diagnosed with rotator cuff rupture by an orthopedic surgeon and rotator cuff repair was performed using an arthroscope, 28 were selected as subjects. These subjects were allocated randomly to the experimental group and control group with 14 subjects in each group. An electromyogram was measured as a measure of the extent of muscle activation around the shoulder for a total of six times (%RVC). The cross-sectional area of the supraspinatus muscle was measured before and after the rotator cuff repair by magnetic resonance imaging. RESULTS: The extent of muscle activation in accordance with time in both the experimental group and control group displayed significant differences in various muscles including the anterior deltoid, pectoralis major, upper trapezius and infraspinatus muscle(p<.05). A significant difference in the variation of the cross-sectional area of the supraspinatus muscle was observed between the experimental group and the control group(p<.05). CONCLUSION: Handgrip exercise helps rehabilitate the shoulder joint at the acute stage after rotator cuff repair when assertive exercise therapy cannot be applied.