• Archives of Plastic Surgery
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• 제50권2호
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• pp.182-187
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• 2023

We aim to provide our surgical techniques, and outcomes of functional scrotal reduction procedures with complete preservation of the genitourinary original anatomy in a simple way without using complicated skin grafting or skin advancement flaps in Patients with huge and long-standing scrotal lymphedema 18 patients ages ranged from 14-65 with a median of 30 years. Functional scrotal and penoscrotal reduction was attained in all cases, without distortion of the genitourinary anatomy and without the need for advancement, rotational or free flaps, maximal scrotal diameter was reduced from median of 61[48-92] cms to a median of 25[21-29] cms (P<0.0001) and remained almost unchanged at the end of the follow up period 26[22-34] cms (P<0.0001). Sexual performance and voiding capacity were improved in all patients, testicular vascularity was unaffected and the Glasgow Benefit Inventory (GBI) for the quality of life showed marked enhancement in the total 55.5[50-72], general 55.5[50-72], social 100[50-100] and physical 16.6[16-33] points subscales. According to our experience, surgery remains the gold standard treatment for management of huge scrotal lymphedema, successful preservation of the genitourinary functions can be attained despite the size in most cases with excellent cosmoses.

• 대한정형외과스포츠의학회지
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• 제3권1호
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• pp.49-55
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• 2004

목적: 후외측 불안정성에 대하여 시행한 여러 수술 방법 등을 비교 분석함으로써 불안정성의 정도에 따른 적합한 수술적 방법들을 제시하고자 한다. 연구대상 및 방법: 1998년에서 2002년 10월까지 85명의 환자가 후외측 회전 불안정성으로 후외측 재건술을 시행하였으며 이중에서 2년 이상 추시가 가능하였던 61 명 환자를 대상으로 임상적 평가(OAK, IKDC)와 후외측 전위 검사 및 경골 외회전(dial test)를 이용하여 회전 안정성을 평가 하였다. 결과: 변형된 비골 두 터널을 이용한 후외측 재건술이 회전 안정성면에서 가장 좋은 결과를 나타내었으며 Hughston-jacobson 방법과 대퇴 이두건 고정술은 불량한 결과를 나타내었다. 비골 두 터널은 경골 터널에 비하여 유의하게 안정적 이었다. 결론: 변형된 비골 두 터널을 이용한 후외측 재건술은 grade II 이하의 불안정성에서는 좋은 결과를 나타내었고, grade III 이상의 불안정성에는 비골 두 터널과 경골 터널의 동시 해부학적 재건술이 필요하다. 또한, 내반 불안정성이 동시에 존재하는 경우는 외측 측부 인대 재건술이 필요할 것으로 판단된다.

• 한국멀티미디어학회논문지
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• 제18권10호
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• pp.1157-1163
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• 2015

In this paper, we propose a registration method of 3d facial scan data and CBCT data using voxelization and distance map. First, two data sets are initially aligned by exploiting the voxelization of 3D facial scan data and the information of the center of mass. Second, a skin surface is extracted from 3D CBCT data by segmenting air and skin regions. Third, the positional and rotational differences between two images are accurately aligned by performing the rigid registration for the distance minimization of two skin surfaces. Experimental results showed that proposed registration method correctly aligned 3D facial scan data and CBCT data for ten patients. Our registration method might give useful clinical information for the oral surgery planning and the diagnosis of the treatment effects after an oral surgery.

• 대한족부족관절학회지
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• 제22권4호
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• pp.145-150
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• 2018

High ankle sprain (distal tibiofibular syndesmosis injury) occurs from rotational injuries, specifically external rotation, and may be associated with ankle fractures. The prevalence of these injuries may be higher than previously reported because they may be missed in an initial examination. Syndesmosis injury can lead to significant complications in injured ankle joints, so a precise physical examination and radiological evaluation is necessary. The most important treatment goal is to have the tibia and fibula located in the correct position with respect to each other and to heal in that position. The methods to fix these injuries is controversial.

• Journal of Korean Neurosurgical Society
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• 제51권2호
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• pp.120-123
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• 2012

Objective : Percutaneous vertebroplasty (PVP) is usually carried out under three-dimensional (2D) fluoroscopic guidance. However, operative complications or bone cement distribution might be difficult to assess on the basis of only 2D radiographic projection images. We evaluated the feasibility of performing an intraoperative and postoperative examination in patients undergoing PVP by using three-dimensional (3D) reconstructive C-arm. Methods : Standard PVP procedures were performed on 14 consecutive patients by using a Siremobil Iso-$C^{3D}$ and a multidetector computed tomography machine. Post-processing of acquired volumetric datasets included multiplanar reconstruction (MPR) and surface shaded display (SSD). We analyzed intraoperative and immediate postoperative evaluation of the needle trajectory and bone cement distribution. Results : The male : female ratio was 2 : 12; mean age of patients, 70 (range, 77-54) years; and mean T score, -3.4. The mean operation time was 52.14 min, but the time required to perform and post-process the rotational acquisitions was 7.76 min. The detection of bone cement distribution and leakage after PVP by using MPR and SSD was possible in all patients. However, detection of the safe trajectory for needle insertion was not possible. Conclusion : 3D rotational image acquisition can enable intra- or post-procedural assessment of vertebroplasty procedures for the detection of bone cement distribution and leakage. However, it is difficult to assess the safe trajectory for needle insertion.

• 한국산학기술학회논문지
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• 제17권6호
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• pp.521-526
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• 2016

본 논문에서는 환자의 대장 내에서 자율적으로 이동이 가능한 자율주행 형 대장 내시경의 주행 메커니즘으로서 회전관성을 이용하여 환자의 장내 주행이 가능한 새로운 주행메커니즘의 설계 방법에 대해 제안한다. 상업용 대장 내시경은 시술할 때 환자에게 장시간의 고통과 불쾌감을 제공하여 환자들이 시술을 꺼리게 되어 내시경 검사가 필요한 대장 암 등의 조기 진단에 차질을 빚고 있다. 이 문제를 해결하기 위하여 환자의 장관 내에서 자율적으로 이동함으로써 불쾌감이나 고통을 줄일 수 있는 로봇 형 차세대 내시경에 대한 연구가 진행되어 왔다. 회전관성을 이용하는 주행 메커니즘에서는 회전관성을 일으키기 위하여 flywheel을 모터로 구동하여 에너지를 저장한다. flywheel에 의한 에너지 저장과 방출에 의하여 장내에서 로봇이 주행할 때 일어나는 stick-slip 현상을 효율적으로 극복할 수 있다. 이를 위해 flywheel의 속도제어가 가능하고 고주파 노이즈에 강건한 제어기를 설계하고 구현하였다. 여기서 제시하는 회전관성을 이용한 주행 메커니즘은 다른 메커니즘에 비해 구조가 간단할 뿐 아니라 주행도 효율적임을 실험을 통하여 증명하였다.

• The Korean Journal of Physiology and Pharmacology
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• 제4권5호
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• pp.409-415
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• 2000

Fluorescence polarization of 1,6-diphenyl-1,3,5-hexatriene (DPH) was used to evaluate the effects of dopamine HCl on the range of the rotatioanl mobility of bulk bilayer structure of the synaptosomal plasma membrane vesicles (SPMV) isolated from whole bovine brain. In a dose-dependent manner, dopamine decreased the anisotropy $({\gamma}),$ limiting anisotropy $({\gamma}{infty})$ and order parameter (S) of DPH in the membranes. These indicate that dopamine increased the rotational mobility of the probe in the neuronal membranes. Cationic 1-[4-(trimethylammonio)-phenyl]-6-phenylhexa-1,3,5-hexatriene (TMA-DPH) and anionic 3-[p-(6-phenyl)-1,3,5-hexatrienyl]-phenylpropionic acid (PRO-DPH) were utilized to examine the range of transbilayer asymmetric rotational mobility of the neuronal membranes. Dopamine had a greater increasing effect on the mobility of the inner monolayer as compared to the outer monolayer of the neuronal membranes. It has been proven that dopamine exhibits a selective rather than nonselective fluidizing effect within the transbilayer domains of the SPMV.

• Archives of Plastic Surgery
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• 제43권1호
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• pp.26-31
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• 2016

Background The global prevalence of myelomeningocele has been reported to be 0.8-1 per 1,000 live births. Early closure of the defect is considered to be the standard of care. Various surgical methods have been reported, such as primary skin closure, local skin flaps, musculocutaneous flaps, and skin grafts. The aim of this study was to describe the clinical characteristics of myelomeningocele defects and present the surgical outcomes of recent cases of myelomeningocele at our institution. Methods Patients who underwent surgical closure of myelomeningocele at our institution from January 2004 to December 2013 were included in this study. A retrospective chart review of their medical records was performed, and comorbidities, defect size, location, surgical procedures, complications, and the final results were analyzed. Results A total of 14 patients underwent surgical closure for myelomeningocele defects. Twelve cases were closed with direct skin repair, while two cases required local skin flaps to cover the skin defects. Three cases of infection occurred, requiring incision and either drainage or removal of allogenic materials. One case of partial flap necrosis occurred, requiring secondary revision using a rotational flap and a full-thickness skin graft. Despite these complications, all wounds eventually healed completely. Conclusions Most myelomeningocele defects can be managed by direct skin repair alone. In cases of large defects, in which direct repair is not possible, local flaps may be used to cover the defect. Complications such as wound dehiscence and partial flap necrosis occurred in this study; however, all such complications were successfully managed with simple ancillary procedures.

• Clinics in Shoulder and Elbow
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• 제18권3호
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• pp.128-132
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• 2015

Background: We described a surgical method for osteosynthesis and reported the resultant strength after application of a PHILOS plate through the anterolateral approach for the treatment of fractures of the distal humerus. Methods: Between February 2010 and March 2012, open reduction and internal fixation operations with the PHILOS plate for treatment of fracture of the distal humerus were performed on a total of nine patients (five men, four women). The mean age was 40.8 years (range, 24-50 years), and the average follow-up period was 9.1 months (range, 6-15 months). Clinical evaluations were performed 6 months after the operation. Clinical assessment included determination of the range of motion of the elbow, the Mayo and Oxford elbow scores, and any postoperative complications. Results: Fracture union was noted in all patients, with an average period of 12.4 weeks. The average Mayo elbow and Oxford elbow scores were 87.2 (of a total of 100) and 43.3 (of a total of 48), respectively. For the postoperative range of motion of the elbow, all patients showed complete recovery to the preoperative range of motion. No other conditions, such as neurolepsis, plate breakage, or rotational deformity, were observed. Conclusions: Open reduction and internal fixation of distal humerus fractures with a PHILOS plating system via anterolateral approach can be effective. A high rate of union with good outcomes can be assumed.

• 한국임상수의학회지
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• 제32권4호
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• pp.356-358
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• 2015

큰 크기의 각막천공에 안내용물 손상이 된 눈을 안구적출술을 시도하지 않고, 안구내용물적출술과 실리콘볼 삽입후 각막이식을 적용하여 치료하여 안구적출술보다 미용상 만족한 눈의 외관을 얻은 증례를 소개 하였다.