• Clinical and Experimental Reproductive Medicine
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• 제25권3호
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• pp.341-348
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• 1998

Objective: To determine the reproductive outcomes of women undergoing microsurgical reversal of tubal sterilization at age 36 years or older. Materials and Methods: A series of 133 patients who received microsurgical reversal of the previously sterilized fallopian tubes at Seoul National University Hospital from July, 1980 to January, 1992 was reviewed and evaluated for clinical characteristics, pregnancy rates, and factors influencing the outcome of tubal reversal. Results: Of 133 patients, 78 (58.6%) had been sterilized by laparoscopic cautery. Loss of children was a leading cause for tubal reversal. The mean interval from tubal sterilization to tubal reversal was 65.0 months. The overall pregnancy rate was 52.6% (70/133), and the mean interval was 9.4 months from tubal reversal to pregnancy. Excluding 7 patients who were lost to follow-up, 76 pregnancies were confirmed in 63 patients with the delivery rate per patient of 66.7% (42/63). There were no significant differences in age, duration of tubal sterilization, postoperative tubal length between pregnant and non-pregnant groups. Conclusions: Microsurgical reversal of tubal sterilization could be a justifiable method in women 36 years age or older.

• Archives of Plastic Surgery
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• 제33권2호
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• pp.175-180
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• 2006

Preoperative angiography is frequently used in the planning of microsurgical reconstruction for identification of vascular abnormality that influence the planning of operation. But, recently 3D CT angiography is considered as new technique that can provide detailed information about vascular anatomy as well as soft and bony tissue without the risks of invasive angiography. 3D CT angiograms were performed in 19 patients before microsurgical reconstruction for the lower extremity and hand between May of 2003 and Oct of 2004. Sixteen of the studies were of the donor site and all of 19 studies were of the recipient site. No complications were found from the 3D CT angiograms. In one case of the bone exposed open wound, the injury of anterior tibial artery was identified and the zone of injury was adequately demonstrated. With the improvement in quality of CT imaging, 3D CT angiograms may provide a favorable alternative to invasive angiography. It is capable of providing high-resolution, three dimensional vascular imaging without the need for arterial puncture and prolonged post-procedure observation. The relation among blood vessels, bones, and soft tissue is well demonstrated in 3D CT angiogram. Also The acquisition time and examination cost were considerably lower in comparison with invasive angiography. In conclusion, this study demonstrates that 3D CT angiography may provide accurate, safe, and cost-effective preoperative imaging. The 3D CT angiography with relatively low morbidity, low cost, ease of image acquisition can have an broader role in microsurgical reconstructive surgery.

• Journal of Korean Neurosurgical Society
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• 제64권5호
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• pp.740-750
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• 2021

Objective : Retrograde suction decompression (RSD) is an adjuvant technique used for the microsurgical treatment of large and giant internal carotid artery (ICA) aneurysms. In this study, we analyzed the efficacy and safety of the RSD technique for the treatment of large and giant ICA aneurysms relative to other conventional microsurgical techniques. Methods : The aneurysms were classified into two groups depending on whether the RSD method was used (21 in the RSD group vs. 43 in the non-RSD group). Baseline characteristics, details of the surgical procedure, angiographic outcomes, clinical outcomes, and procedure-related complications of each group were reviewed retrospectively. Results : There was no significant difference in the rates of complete neck-clipping between the RSD (57.1%) and non-RSD (67.4%) groups. Similarly, there was no difference in the rates of good clinical outcomes (modified Rankin Scale score, 0-2) between the RSD (85.7%) and non-RSD (81.4%) groups. Considering the initial functional status, 19 of 21 (90.5%) patients in the RSD group and 35 of 43 (81.4%) patients in the non-RSD group showed an improvement or no change in functional status, which did not reach statistical significance. Conclusion : In this study, the microsurgical treatment of large and giant intracranial ICA aneurysms using the RSD technique obtained competitive angiographic and clinical outcomes without increasing the risk of procedure-related complications. The RSD technique might be a useful technical option for the microsurgical treatment of large and giant intracranial ICA aneurysms.

• Archives of Plastic Surgery
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• 제50권6호
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• pp.627-634
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• 2023

In recent decades, a number of simulation models for microsurgical training have been published. The human placenta has received extensive validation in microneurosurgery and is a useful instrument to facilitate learning in microvascular repair techniques as an alternative to using live animals. This study uses a straightforward, step-by-step procedure for instructing the creation of simulators with dynamic flow to characterize the placental vascular tree and assess its relevance for plastic surgery departments. Measurements of the placental vasculature and morphological characterization of 18 placentas were made. After the model was used in a basic microsurgery training laboratory session, a survey was given to nine plastic surgery residents, two microsurgeons, and one hand surgeon. In all divisions, venous diameters were larger than arterial diameters, with minimum diameters of 0.8 and 0.6 mm, respectively. The majority of the participants considered that the model faithfully reproduces a real microsurgical scenario; the consistency of the vessels and their dissection are similar in in vivo tissue. Furthermore, all the participants considered that this model could improve their surgical technique and would propose it for microsurgical training. As some of the model's disadvantages, an abundantly thick adventitia, a thin tunica media, and higher adherence to the underlying tissue were identified. The color-perfused placenta is an excellent tool for microsurgical training in plastic surgery. It can faithfully reproduce a microsurgical scenario, offering an abundance of vasculature with varying sizes similar to tissue in vivo, enhancing technical proficiency, and lowering patient error.

• 대한두경부종양학회지
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• 제1권1호
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• pp.63-74
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• 1985

Although regional and myocutaneous flaps are still the standard in head and neck reconstruction. The capacity to transfer distant tissues by microsurgical technique expands the reconstructive surgeon's ability to restore severe deformities of the head and neck. From 1981 to 1985, thirteen patients with extensive defects of the head and neck after extirpative surgery of tumor have been reconstructed utilizing the technique of microsurgical composite tissue transplantation. In this series of patients, six presented with reconstructions in the different region of the head and neck with review of literatures. The results of case analysis are summarized as follows: 1) Transplantation was successful in twelve among thirteen patients (92%). 2) Seven patients presented with malignancy and six with benign tumor. 3) Frequent sites of reconstruction were face and mandible. 4) Fourteen free composite tissue transplantations for reconstruction of thirteen patients were obtained six different tissue compositions from eight different donor sites. 5) The recipient artery and vein was most often superficial temporal or facial vessels. 6) The average time of operation was ten hours.

• Archives of Plastic Surgery
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• 제40권4호
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• pp.327-329
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• 2013

As a technically demanding skill, microsurgery is taught in the lab, in the form of a course of variable length (depending on the centre). Microsurgical training courses usually use a mixture of non-living and live animal simulation models. In the literature, a plethora of microsurgical training models have been described, ranging from low to high fidelity models. Given the high costs associated with live animal models, cheaper alternatives are coming into vogue. In this paper we describe the use of the chicken aorta as a simple and cost effective low fidelity microsurgical simulation model for training.

• Journal of Korean Neurosurgical Society
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• 제29권12호
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• pp.1677-1681
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• 2000

Microsurgical transthoracic extrapleural approach for thoracic discectomy in three cases were modified and simplified in order to achieve better exposure of ventral extradural space than posterolateral extrapleural(lateral extracavitary) approach and less pulmonary complications than transthoracic transpleural approach. These approaches were optimized by microscope and video-assistance. Surgery was followed by clinical improvement in all patients. The results of treatment seem to support the use of these modified techniques as adequate surgical treatment of thoracic disc herniations without any complications.

• Archives of Reconstructive Microsurgery
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• 제3권1호
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• pp.32-39
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• 1994

본 연세대학교 의과대학 정형외과학교실에서는 1982년에서 1989년 사이에 모두 160건의 미세수술기법을 이용한 하지 재건술을 시행하였다. 이들중 남자가 96건, 여자가 64건이었으며 이들의 평균연령은 23.8세이고, 약 21.4개월의 치유 관찰기간을 두었다. 원인으로는 교통사고가 118건, 종양이 18건, 작업장손상이 12건, 화상 5건, 폭발사고가 2건이며 기타 9건이었다. 이중 견갑피판이식이 55건, 서혜부피판이식이 35건, 유리 혈관부착 골피판이식이 23건, 견갑피판이식이 18건, 견갑부 및 광배근 복합피판이 9건, 분절절제술 및 회전재접합술이 8건이었다. 모두 134건에서 성공적인 치유를 경험하였으며, 기능 및 외관에서 모두 좋은 성적을 거두었다. 유리 혈관부착 골피판을 이용한 미세수술적 하지재건술을 광범위한 골결손과 손상 신경재건 및 여러차례의 재건술이 필요한 경우에 좋은 적응증이 되며 이러한 미세수술적 하지재건술은 광범위한 골결손과 손상신경재건 및 여러차례의 재건술이 필요한 경우에 좋은 적응증이 되며 이러한 점에서 상기기법으로 한번의 재건술이라는 장점을 지닌다.

• Journal of Chest Surgery
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• 제31권11호
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• pp.1110-1115
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• 1998

식도절제와 식도와 위의 문합 혹은 식도와 대장의 문합등의 수술은 통상적으로 식도절제를 위한 개흉절개와, 식도 및 주위 림프절 절제, 광범위한 개복수술과 위 혹은 대장의 박리 등을 포함하고 있다. 또한 박리된 위 혹은 대장은 경부절개후 경부식도에 문합하게 된다. 1978년 Orringer 와 Sloan 등이 개흉술을 하지 않고 식도절제술을 최초로 시행한 이래 흉강내시경과 종격동경등을 이용한 여러 가지 수술방법이 개발되었다. 반면에 종격동 내시경을 이용한 식도박리(endoscopic microsurgical dissection of the oesophagus : EMDO) 1989년 이들 수술수기 개발자인 Buess, Kimfmuller, Naruhn과 Melzer 등에 의해 EMDO로 명명되었으며 Buess와 Becker에 의해서 임상에 응용되었다. 본 증례는 150cc의 빙초산을 먹은 후 식동협착(esophageal striture) 로 진단 받은 20세된 여자환자에서 종격동경(Operating Mediastinoscope)을 이용하여 식도를 박리 하면서 동시에 위와 식도를 문합할수 있게 박리하고 GIA 90을 이용하여 위문부와 식도부위를 절제한 후 점막이 보존되어있는 상부식도 부위에서 식도를 절제하고 위를 1이용하여 경부에서 식도와 위를 문합하였다. 수술 후 특이한 합병증 없이 수술 후 17일째 퇴원하였으며 현재 별다른 문제없이 외래 추적관찰중이다.

• Journal of Korean Neurosurgical Society
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• 제30권5호
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• pp.600-604
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• 2001

Objective : The authors report the microsurgical anterolateral tunnel approach for the treatment of the cervical disc diseases and its postoperative surgical results. Methods : All surgical procedures followed the method of classical microsurgical anterior discectomy. Small tunnel(7-8mm) was made on the disc space reaching to the posterior longitudinal ligament. The disc materials and bony spurs were removed through this tunnel. Thirty-one patients of cervical disc herniation(24 cases with pure disc herniation, 7 cases with combined cervical spondylosis) were evaluated on the symptoms, conformation in plain X-ray, C-T, and MRI. The follow up time was over 2 years. Results : Postoperatively the result(following the out come scale) was excellent and good in Twenty-nine patients. One with fair result showed remnant disc particle and spur and another one is combined with cord contusion. One patient with lesion in C 3-4 space and two cervicothoracic junction showed excellent result. Two patients with osteoporosis also showed good results. Cervical spine curvature and disc space height were not changed on the plain X-ray and MRI in all patients. Twenty-nine patients were discharged within 3 days after surgery without any postoperative complications. Conclusions : The microsurgical anterolateral tunnel approach could be indicated for the treatment of patients with cervical disc diseases and with difficulty in achieving interbody fusion(the higher cervical level and cervicothoracic junction, osteoporosis etc.).