• Archives of Plastic Surgery
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• 제37권4호
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• pp.421-426
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• 2010

Purpose: Patients with serious burns are prone to chondritis due to lack of soft tissue in the auricle, which can cause severe defects in the auricular morphology. In addition, skin damage occurs frequently in the vicinity of post-burn wounds, presenting difficulties in reconstruction surgery. An auricular reconstruction has functional and cosmetic significance. The aim of this study is to develop appropriate reconstruction methods for auricular defects. Methods: Thirty seven patients, who were treated for auricular defects from 2005 to 2009, were enrolled in this study. A local flap, multiple regional flaps and cartilage framework with or without a temporal fascial flap were applied in reconstruction surgery according to the location of the auricular defect. Results: The age of the subjects ranged from 11 to 56. Some subjects had defects that cover more than half of the helical rim with most exhibiting post-burn scars in the vicinity, for whom a multiple regional flap was used. A single use of a tubed flap was sufficient for subjects with defects that covered less than half of the helical rim. A regional flap was also used for reconstruction in subjects with defects covering both the helical rim and antehelix. Conclusion: Achieving satisfactory results from the skin flaps and skin grafts for post-burn auricular defects in both functional and cosmetic aspects is a difficult task. Therefore, selecting an appropriate surgical method through proper diagnosis of the auricular defect and the state of the available skin in the vicinity is essential.

• Archives of Plastic Surgery
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• 제36권5호
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• pp.674-677
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• 2009

Purpose: Typical cross finger flap is still a good method for reconstruction of fingertip injuries. However, it is necessarily followed by great loss and aesthetically unpreferable result of donor finger. Hereby, we introduce a modification of cross finger flap with reduction pulp plasty and full thickness skin graft, with which we could reduce the defect size of injured fingertip and donor site morbidity at the same time, without any need for harvesting additional skin from other part of hand. Method: This method was performed in the patients with fingertip injuries of complete amputation or in case of loss of fingertip due to necrosis after replantation. Firstly, reduction pulp plasty was performed on the injured finger to reduce the size of defect of fingertip. Additional skin flap was obtained from the pulp plasty. Secondly, cross finger flap was elevated from the adjacent finger to cover the defect on the injured finger. At the same time, defect on the donor finger produced by the flap elevation was covered by full thickness skin graft with the skin obtained from the pulp plasty of injured finger. Results: Flap and graft survived without any necrosis after surgical delay and flap detachment. All of them were healed well and did not present any severe adversary symptoms. Conclusion: Cross finger flap with reduction pulp plasty and full thickness skin graft is an effective method that we can easily apply in reconstruction of fingertip injury. We think that it is more helpful than the usual manner, especially in cases of children with less soft tissue on their fingers for preservation and reduction of the morbidity of donor finger.

• 대한치과보철학회지
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• 제41권3호
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• pp.325-341
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• 2003

Statement of problem: In cases where bony defects were present, guided bone regenerations have been performed to aid the placement of implants. Nowadays, the accepted concept is to isolate bone from soft tissue by using barrier membranes to allow room for generation of new bone. Nonresorbable membranes have been used extensively since the 1980's. However, this material has exhibited major shortcomings. To overcome these faults, efforts were made to develop resorbable membranes. Guided bone regenerations utilizing resorbable membranes were tried by a number of clinicians. $Bio-Gide^{(R)}$ is such a bioresorbable collagen that is easy to use and has shown fine clinical results. Purpose: The aim of this study was to evaluate the histological results of guided bone regenerations performed using resorbable collagen membrane($Bio-Gide^{(R)}$) with autogenous bone, bovine drived xenograft and combination of the two. Surface morphology and chemical composition was analyzed to understand the physical and chemical characteristics of bioresorbable collagen membrane and their effects on guided bone regeneration. Material and methods: Bioresorbable collagen membrane ($Bio-Gide^{(R)}$), Xenograft Bone(Bio-Oss), Two healthy, adult mongrel dogs were used. Results : 1. Bioresorbable collagen membrane is pure collagen containing large amounts of Glysine, Alanine, Proline and Hydroxyproline. 2. Bioresorbable collagen membrane is a membrane with collagen fibers arranged more loosely and porously compared to the inner surface of canine mucosa: This allows for easier attachment by bone-forming cells. Blood can seep into these spaces between fibers and form clots that help stabilize the membrane. The result is improved healing. 3. Bioresorbable collagen membrane has a bilayered structure: The side to come in contact with soft tissue is smooth and compact. This prevents soft tissue penetration into bony defects. As the side in contact with bone is rough and porous, it serves as a stabilizing structure for bone regeneration by allowing attachment of bone-forming cells. 4. Regardless of whether a membrane had been used or not, the group with autogenous bone and $Bio-Oss^{(R)}$ filling showed the greatest amount of bone fill inside a hole, followed by the group with autogenous bone filling, the group with blood and the group with $Bio-Oss^{(R)}$ Filling in order. 5. When a membrane was inserted, regardless of the type of bone substitute used, a lesser amount of resorption occurred compared to when a membrane was not inserted. 6. The border between bone substitute and surrounding bone was the most indistinct with the group with autogenous bone filling, followed by the group with autogenous bone and $Bio-Oss^{(R)}$ filling, the group with blood, and the group with $Bio-Oss^{(R)}$ filling. 7. Three months after surgery, $Bio-Gide^{(R)}$ and $Bio-Oss^{(R)}$ were distinguishable. Conclusion: The best results were obtained with the group with autogenous bone and $Bio-Oss^{(R)}$ filling used in conjunction with a membrane.

• Archives of Plastic Surgery
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• 제39권2호
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• pp.138-142
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• 2012

Background : Electrical burns are one of the most devastating types of injuries, and can be characterized by the conduction of electric current through the deeper soft tissue such as vessels, nerves, muscles, and bones. For that reason, the extent of an electric burn is very frequently underestimated on initial impression. Methods : From July 1999 to June 2006, we performed 15 cases of toe tissue transfer for the reconstruction of finger defects caused by electrical burns. We performed preoperative range of motion exercise, early excision, and coverage of the digital defect with toe tissue transfer. Results : We obtained satisfactory results in both functional and aesthetic aspects in all 15 cases without specific complications. Static two-point discrimination results in the transferred toe cases ranged from 8 to 11 mm, with an average of 9.5 mm. The mean range of motion of the transferred toe was $20^{\circ}$ to $36^{\circ}$ in the distal interphalangeal joint, $16^{\circ}$ to $45^{\circ}$ in the proximal interphalangeal joint, and $15^{\circ}$ to $35^{\circ}$ in the metacarpophalangeal joint. All of the patients were relatively satisfied with the function and appearance of their new digits. Conclusions : The strategic management of electrical injury to the hands can be both challenging and complex. Because the optimal surgical method is free tissue transfer, maintenance of vascular integrity among various physiological changes works as a determining factor for the postoperative outcome following the reconstruction.

• Archives of Plastic Surgery
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• 제36권4호
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• pp.365-371
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• 2009

Purpose: Good color match holds a key position in facial reconstruction for good aesthetic result. To correct the wide facial soft tissue defect were usually used the tissue expanded cheek flap, deltopectoral flap or radial forearm free flap. This study is aimed to analyse the color difference after flap surgery by using chromameter. Method: From August 1995 to December 2006, 30 patients underwent flap operations were chosen randomly and evaluated color differences between flap site and adjacent skin. Reconstructive procedures included tissue expanded cheek flap(n = 10), deltopectoral flap(n = 10), and radial forearm free flap(n = 10). The measured sites were flap center within a radius of 1 ㎝ and four points of adjacent skin along the flap margin. The color was quantified in a three dimensional coordinate system $L^*$ (brightness), $a^*$ (redness), $b^*$ (yellowness). Results: There was no significant color difference between the pedicled flaps(tissue expanded cheek flap and deltopectoral flap) and adjacent skin area. On the other hand, color values of the radial forearm free flap were statistically different from those of adjacent skin area. Total color difference(${\Delta}E$) of tissue expanded cheek flap and deltopectoral flap were $7.45{\pm}5.78$ versus $9.41{\pm}7.09$, and that of radial forearm free flap was $11.74{\pm}3.85$. They suggest that pedicled flaps have a potential of better color match than radial forearm free flap. Conclusion: Thus, better esthetic result and satisfaction is more likely to be expected in pedicled flaps as long as it could be applied comparing radial forearm free flap.

• Archives of Plastic Surgery
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• 제36권4호
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• pp.462-468
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• 2009

Purpose: The liposuction has been generalized & undergone in the field of plastic surgery and it has had a great influence on fat graft. But despite of liposuction and fat injection being performed widely, we did not focus on complication associated with donor site. So we reported satisfactory result with the intraoperative sustained limited expansion & direct closure to donor site tissue necrosis after liposuction and analyzed the cause & measures of donor site necrosis with the literature investigation Methods: From November 2007 to June 2008, we treated four cases of tissue necrosis and infection surrounding the thigh and forearm. Necrosis after liposuction was 1 case, donor site necrosis after fat injection were 3 cases and MRSA was detected in 2 cases. first, we debrided the necrotic tissue and treated with potadine gauze soaking dressing & susceptible antibiotics. After confirmation of healthy granulation tissue, we used intraoperative sustained limited expansion and closed directly of defect & observed the results. Results: The patient was displeased and worried with the unexpected damage concerning the donor site and the procedure concerning time and financial exhaustion, but after confirming no contracture of the scar tissues and only a thin or slightly widened line of scar, showed satisfaction. Conclusion: Because it is fastidious to avoid donor site complication after liposuction & fat injection, enough explanation and understanding on possible complication to donor site are necessary and careful surgery procedure & materials are required. But if donor site necrosis were occurred although close consideration of possible causes of necrosis, we should think about not only wound healing process but also the sequela like scar contracture & cosmetic effect and treat the most adequate method to satisfying both concerns.

• 대한치과보철학회지
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• 제57권4호
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• pp.356-363
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• 2019

연구개를 포함한 상악골 절제술을 받은 환자는 구강, 비강, 상악동, 비인두를 포함하는 결손을 가질 수 있다. 비강과 구강이 개통되고 불완전한 구개인두폐쇄로 인해 공기 및 음식물이 누출되어 발음 장애, 저작, 연하 기능의 저하가 발생할 수 있고, 안모의 변형으로 환자의 심리상태에 부정적 영향을 줄 수 있다. 구개 폐색장치는 결손 부위 폐쇄를 통해 구강과 비강을 분리시켜 연하, 발음 및 심미적 장애를 개선할 수 있다. 완전 무치악 환자에서 구개 폐색장치는 통상적인 총의치와 같은 유지, 안정을 얻기 어렵기 때문에 결손 부위의 주위조직을 적절히 활용해 변연봉쇄를 얻어야 한다. 또한 hollow type bulb를 통해 보철물의 무게를 감소시켜 유지에 도움을 준다. 본 증례는 우측 편평상피암으로 인하여 상악골 절제술을 받은 63세 남환으로 구강 및 인두부의 기능적 변연형성을 통해 생리적으로 적절한 변연을 갖고, 이중온성법을 사용하여 무게를 감소시킨 보철물을 이용하여 기능적, 심미적 회복을 얻었기에 보고하는 바이다.

• Journal of Chest Surgery
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• 제30권3호
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• pp.348-348
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• 1997

48세 남자 환자의 전종격동을 깊게 침범하며 흉골에서 발생한 거대한 연골육종을 치료하였다. 환자는 흉골의 연골육종과 주변의 정상변연 4cm을 포함하여 광범 위 절제술을 받았으며 그 종양 자체 는 양측의 쇄골과제 1,2,3늑연골을 포함하는 15× 16X10cm크기였다. 종양의 광범위 절제술후 남은 결손 부위는 매우 컸으며 흉벽 재건술을 Marled mesh와 methylmethacrylate와 wire steels로 겹싸는 sandwich식의 방법으로 시행하였고 연부조직의 재건술 또한 대흉근을 이용한 근피 판 치환술을 시행하 였다. 그러나 환자는 수술후 결핵성 종격동염이 발생되었고 다량의 농이 배출되었다. 재수술은 흉벽 재건술시의 사용되었던 이물질 모두를 제거하고 괴사성 조직의 소파술과 배농술을 시행하였다. 환자는 1 년간 항결핵제요법을 시행하였으며 완치되었기에 문헌고찰과 보고하는 바이다.

• Journal of Chest Surgery
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• 제30권3호
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• pp.248-252
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• 1997

48세 남자 환자의 전종격동을 깊게 침범하며 흉골에서 발생한 거대한 연골육종을 치료하였다. 환자는 흉골의 연골육종과 주변의 정상변연 4cm을 포함하여 광범 위 절제술을 받았으며 그 종양 자체 는 양측의 쇄골과제 1,2,3늑연골을 포함하는 15$\times$ 16X10cm크기였다. 종양의 광범위 절제술후 남은 결손 부위는 매우 컸으며 흉벽 재건술을 Marled mesh와 methylmethacrylate와 wire steels로 겹싸는 sandwich식의 방법으로 시행하였고 연부조직의 재건술 또한 대흉근을 이용한 근피 판 치환술을 시행하 였다. 그러나 환자는 수술후 결핵성 종격동염이 발생되었고 다량의 농이 배출되었다. 재수술은 흉벽 재건술시의 사용되었던 이물질 모두를 제거하고 괴사성 조직의 소파술과 배농술을 시행하였다. 환자는 1 년간 항결핵제요법을 시행하였으며 완치되었기에 문헌고찰과 보고하는 바이다.

• Archives of Reconstructive Microsurgery
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• 제8권2호
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• pp.97-107
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• 1999

The osteogenic capacity of the vascularized periosteum autograft has been extensively demonstrated by experimental works. The objective of this study was to characterize the behavior of experimental model of vascularized periosteal flap(VPF) by observing sequential stages of osteogenesis after simulated VPF in rabbits. In experimental group, segmental resection of bone including the periosteum was performed in 22 radii of 22 New Zealand white rabbits preserving the periosteal circulation of median artery to the periosteum. In order to simulate the transplantation of VPF, the vascular pedicle consisting of median artery and veins was dissected from adjacent soft tissue and the periosteum was longitudinally incised to remove the bone followed by repair of the periosteum. From the first to sixteenth week after the simulated VPF, the changes in VPFs were observed by radiological, light microscopical, scanning electron microscopical methods and the activity of osteocalcin was measured by immunohistochemical method. In control group, the bone tissue and periosteum were completely removed from the mid-shaft of radius and the findings were observed by radiological and light microscopical methods. From the results of this study, it is demonstrated that the experimental model of VPF is vigorously and uniformly osteogenic. Therefore it is thought that VPF can be used as a measure to treat bone defect of shaft of long bone.