• Archives of Plastic Surgery
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• 제44권4호
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• pp.293-300
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• 2017

Background Simulation training is becoming an increasingly important component of skills acquisition in surgical specialties, including Plastic Surgery. Non-living simulation models have an established place in Plastic Surgical microsurgery training, and support the principles of replacement, reduction and refinement of animal use. A more sophisticated version of the basic chicken thigh microsurgery model has been developed to include dissection of a type 1-muscle flap and is described and validated here. Methods A step-by-step dissection guide on how to perform the chicken thigh adductor profundus free muscle flap is demonstrated. Forty trainees performed the novel simulation muscle flap on the last day of a 5-day microsurgery course. Pre- and post-course microvascular anastomosis assessment, along with micro dissection and end product (anastomosis lapse index) assessment, demonstrated skills acquisition. Results The average time to dissect the flap by novice trainees was $82{\pm}24$ minutes, by core trainees $90{\pm}24$ minutes, and by higher trainees $64{\pm}21$ minutes (P=0.013). There was a statistically significant difference in the time to complete the anastomosis between the three levels of training (P=0.001) and there was a significant decrease in the time taken to perform the anastomosis following course completion (P<0.001). Anastomosis lapse index scores improved for all cohorts with post-test average anastomosis lapse index score of $3{\pm}1.4$ (P<0.001). Conclusions The novel chicken thigh adductor profundus free muscle flap model demonstrates face and construct validity for the introduction of the principles of free tissue transfer. The low cost, constant, and reproducible anatomy makes this simulation model a recommended addition to any microsurgical training curriculum.

• Archives of Reconstructive Microsurgery
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• 제7권2호
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• pp.146-156
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• 1998

저자들은 1997년 1월부터 1998년 7월까지 두경부 악성종양 및 반안면왜소증과 같은 선천성 안면기형을 주소로 본원에 내원하였던 환자 9명을 대상으로 하여 9례의 외측대퇴 유리피판술을 시행하여 다음과 같은 결과를 얻을 수 있었다. 첫째, 두경부 재건에 있어서 외측대퇴 유리피판은 다른 유리피판술에 비해 여러 장점을 가지고 있었다. 특히, 공여부 추형이 노출되지 않는 부위이며 동시에 두팀이 수술에 참여할 수 있어서 수술시간이 단축될 수 있었다. 둘째, 술후 방사선치료를 시행하면 피판의 모발은 사라지지만 모공의 과각화증 및 색조 침착이 증가하므로, 외측대퇴부에 모발이 많은 환자는 술후 방사선치료의 여부와 관계없이 미용적인 금기사항에 해당한다. 셋째, 악성종양 절제후에 발생하는 결손의 재건시 피판의 두께가 문제시 되지 않았으며, 피판의 두께는 피판을 도안할 때의 위치, 성(sex), 피하지방층의 제거정도, 근육의 포함 정도, 술 후 피판의 위축정도에 따라 조절 가능하였다. 넷째, 모든 증례에서 정맥이식없이 혈관문합이 가능하였으므로 두경부 재건시 혈관경의 길이는 충분한 것으로 사료된다. 다섯째, 가능한 피판을 장축으로 길게 도안하여 두 번째 또는 네 번째 관통동맥을 포함시켜 수술 후 발생할지도 모르는 혈류부전에 대비하는 것도 피판의 생존률을 높이는 좋은 방법으로 사료된다.

• Archives of Reconstructive Microsurgery
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• 제17권2호
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• pp.68-74
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• 2008

Segmental defects of the tibia after open fractures, sepsis and a tumor surgery are among the most difficult and challenging clinical problems. Tibia defects in these situations are complicated with infection and are resistant to conventional bone grafting techniques. The aim of this study is to report the results and discuss the role of free flap followed by ipsilateral vascularized fibular transposition (IVFT) for reconstruction of tibia defects. Ten patients had free flap followed by IVFT in the period 1989~2007. Mean age was 25.3 years. The patients were followed for an average of 3.4 years. All flaps were survived including 1 case with venous thrombosis requiring additional surgery. The average time to union of proximal and distal end was 5.2 months, 8.2 months, each other. All transposed fibula were viable at last follow-up. IVFT offers the advantages of a vascularized graft. In patients with large bone and soft tissue defects combined with infection, free flap followed by IVFT is an useful and reliable method without microvascular anastomosis.

• Archives of Plastic Surgery
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• 제39권6호
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• pp.626-630
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• 2012

Background Recent literature has indicated that free flaps are currently considered the preferred choice for head and neck reconstruction. However, head and neck cancer patients are frequently treated with chemoradiotherapy, which is often associated with a poor general and local condition, and thus, such patients are ineligible for free flap reconstruction. Therefore, other reconstruction modalities should be considered. Methods We used lower trapezius musculocutaneous (LTMC) flap based on the dorsal scapular artery to reconstruct head and neck defects that arose from head and neck cancer in 8 patients. All of the patients had undergone preoperative chemoradiotherapy. Results There were no complications except one case of partial flap necrosis; it was treated with secondary intention. Healing in the remaining patients was uneventful without hematoma, seroma, or infection. The donor sites were closed primarily. Conclusions The LTMC flap is the preferred flap for a simple, reliable, large flap with a wide arc of rotation and minor donor-site morbidity. The authors recommend this versatile island flap as an alternative to microvascular free tissue transfer for the reconstruction of defects in the head and neck region, for patients that have undergone preoperative chemoradiotherapy.

• Archives of Reconstructive Microsurgery
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• 제7권1호
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• pp.68-72
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• 1998

With the advent of microvascular free-tissue transfer, this single stage resurfacing method for large scar and soft tissue defects around the wrist in the patients of electrical burn has distinctive advantage over the conventional multistage pedicle-flap transfer. Between 1992 and 1996, we treated 9 cases of 8 patients who had large scar around the wrist due to old electrical burn with free flaps as a preparation of staged tendon graft. Mean age was 30.3 years and average scar area was $6{\times}11cm$. The length of time the injury and free flaps was 9 months on an average. Prior to the free flap, we performed the angiography to all patients in order to evaluate the circulation of the forearm and hand and to choose the recipient vessel. In all cases, proximal ulnar arteries in the forearm remained intact and all radial arteries remained intact in 8 of 9 cases on angiogram. The interosseous arteries were well visualized in all cases. We used the ulnar arteries as a recipient artery. The types of flaps used were f scapular cutaneous flaps, 2 dorsalis pedis flaps and a radial forearm flap. Flap survial was 100 percents with satisfactory functional and cosmetic results. Free flaps using ulnar artery as a recipient artery is one of the useful reconstruction methods for the resurfacing of large scar around the wrist in the patients of old electrical burn.

• Journal of the Korean Association of Oral and Maxillofacial Surgeons
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• 제29권6호
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• pp.421-429
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• 2003

총 24 마리의 백서를 선택하여 종양화학요법제의 하나인 5-FU를 복강내 투여한후 24 시간이 지난후 8마리에서는 하복부 동맥 및 정맥을 근간으로 한 하복부 피부 도상피판($2{\times}3cm^2$)울 좌, 우 2 개씩 형성하고 피판을 허혈상태를 유도하여 유리피판상태를 만들었다. 허혈상태를 1 시간정도유지한후 다시 혈류를 재개시켜 피판으로의 혈류를 재개시키고 상처부를 층별봉합 하였다. 그 후 3 일, 5 일, 7 일째 각각 2마리씩 희생하여 H-E staining하였다. 또한 술후 1 일, 3 일, 5 일, 7 일째 피판생존을 육안으로서 확인하고 피판의 survival rate를 비교하기 위하여 사진촬영하여 digital image를 얻은후 adobe software program을 이용하여 Image, Histogram기능을 써서 60,000 pixels(가로${\times}200$, 세로${\times}300$)상태에서 피판의 Luminosity(광도)정도를 수치화하였다. 마찬가지의 술식으로 5-FU를 투여후 3일이 경과된후 8마리를 동일한 부위에 동일한 피판을 써서 3 일, 5 일째 각각 2 마리에 대해 피판을 채취하여 H-E staining 하여 조직현미경상의 치유과정을 관찰하였다. 대조군으로서 복강내 5-FU를 투여받지않은 백서 8마리에서 동일한 도상 피부피판을 형성하고 3 일, 5 일, 7 일째되는 2마리씩 피판부위를 채취하여 H-E염색하여 조직치유반응을 광학현미경으로 관찰하였고 상기와 동일한 방식으로 피판의 생존율을 계산하여 다음의 결과를 얻었다. 1. 육안적 소견으로 치유의 순은 대조군, 항암 24 시간째군, 항암 3 일군순으로 빨리 치유되었다. 2. 피판생존율을 비교하기 위한 광도(Luminosity)의 차는 3군끼리 모두 유의한 차를 보였으며 평균치 비교에서는 대조군, 항암 24 시간째군, 항암 3 일군순으로 높았다. 3. 광학현미경상 조직치유의 정도는 5개 항목으로 나누어 관찰하였다. 전체적으로 대조군과 항암 24 시간군은 시일이 지날수록 치유가 되는 양상을 보였으나 항암 3 일군은 조직의 염증반응이 더 심해지는 양상을 보였다. epidermis necrosis관찰항목에서는 대조군에 비해 항암제투여군이 경도의 반응을 보였고 항암3 일군에서 가장 심하였다. Inflammation state는 3일째는 대조군에서 가장 높게 나타났으나 시일이 지남에 따라 감소한 반면 항암 3 일군은 시일이 지날수록 심해졌다. dermis fibrosis면에서는 항암 24 시간군에서 가장 크게 나타났다. vessel change는 대조군과 항암 24군에서는 거의 관찰되지 않았고 항암 3 일군에서는 중등도로 관찰되었다.fatty tissue layer thinning은 3 군모두에서 관찰되었고 항암 3 일군이 가장 심하게 나타났다. 이상의 실험결과를 보면 술전 항암제투여가 초기에 시행한 경우에는 조직의 치유에 초기 5 일정도까지는 영향을 미치나 7 일이 지나면 정상범주로 회복함을 알수 있었고 실험결과 항암제 투여후 3 일째 피판 형성한 군에서 피판치유가 늦어진 것으로 관찰되어 인체에서 항암 투여후 수술시기는 인체면역계가 회복하는 시기를 3주이상 경과후 적어도 4주째 수술시기를 정하는 것이 유리하리라 생각되었다.

• Archives of Reconstructive Microsurgery
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• 제12권1호
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• pp.38-43
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• 2003

Purpose : Various free flaps and pedicled island flaps are effective for reconstruction of soft tissue defect developed after tumor excision. We want to know the advantage of dorsalis pedis island flap for reconstruction of soft tissue defect caused by soft tissue tumor excision. Materials and Methods : Between 1992 and 2002, we performed 4 dorsalis pedis island flap procedure for reconstruction of soft tissue defect of lower limb developed after soft tissue tumor excision. Average age was 54.7 years old $(40{\sim}68)$, and male 2 cases, female 2 cases. The kinds and number of soft tissue tumors were 2 squamous cell carcinoma and 2 malignant melanoma. The procedures that we performed were all dorsalis pedis island flap. The analysis for the result of treatment was retrospectively accessed by physical examination and questionnaire for whether the change of symptom after operation, range of adjacent joint motion. Also we reviewed associated complication after operative treatment. Results : All dorsalis pedis island flaps were alive. There is no problem for activity of daily living, no skin necrosis and no limitation of motion of adjacent joint. In 1 case of them, the patients died of distant metastasis. Conclusion: Dorsalis pedis island flap procedure as a pedicled island flap procedure is very effective and easy operative procedure for reconstruction of soft tissue defect of lower limb developed after tumor excision compared to free flap procedure because there is no need for microvascular surgery, we can obtain relatively large flap and the lesion and flap donor site locate in the same limb.

• Maxillofacial Plastic and Reconstructive Surgery
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• 제36권4호
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• pp.161-167
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• 2014

Purpose: The reconstruction of mandibular defects poses many difficulties due to the unique, complex shape of the mandible and the temporomandibular joints. With development of microvascular anastomosis, free tissue transplantation techniques, such as deep circumflex iliac artery (DCIA) flap and fibular free flap (FFF), were developed. The DCIA offers good quality and quantity of bone tissue for mandibular segmental defect and implant for dental rehabilitation. Virtual surgical planning (VSP) and stereolithography-guided osteotomy are currently successfully applied in three-dimensional mandibular reconstruction, but most use FFF. There are only a few articles on reconstruction with the DCIA that assess the postoperative results. Methods: Three patients admitted during a five month period (April of 2013 to August of 2013) underwent resection of mandible and DCIA musculo-osseous reconstruction using a VSP and stereolithographic modeling and assessment of outcomes included technical accuracy, esthetic contour, and functional outcomes. Results: This technique yielded iliac bone segment with excellent apposition and duplication of the preoperative plan. Flap survival was 100 percent and all patients maintained preoperative occlusion and contour. Conclusion: Based on our experience, we offer considerations and logically consistent protocols by classification of mandibular defects, and demonstrate the benefits in VSP and stereolithographic modeling of mandibular reconstructive surgery with DCIA flap.

• Maxillofacial Plastic and Reconstructive Surgery
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• 제35권5호
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• pp.277-283
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• 2013

Purpose: Well vascularized pectoralis major myocutaneous flap (PMMF) had been a commonly used versatile flap in reconstructive oromaxillofacial surgery since the 1970s. However, after the advent of microvascular surgery in the 1980s, the PMMF was used less frequently. But, to date, PMMF has been useful and has some advantages such as covering wide defects, covering vital structures, back-up procedure in cases of free flap failure, and reconstruction for radiotherapy patients. The purpose of this study is to evaluate the role, indication, complications, functional, and aesthetic results of this flap in the era of free flap with a literature and chart review. Methods: A retrospective study was conducted of 16 oral cancer patients undergoing reconstructive surgery with PMMF for reconstruction of defects from 2001 to 2012 at Kyungpook National University Hospital. The male to female ratio was 10:6, with a mean age of 63 years (16~79 years). Basic demographic data, previous treatment history, indications, dimension of the flap, site of reconstruction, postoperative complications, and patients' final status were systemically analyzed from chart review. Results: The pathology of the disease included squamous cell carcinoma in the majority of cases (n=14). The remaining cases were fibrosarcoma and mucoepidermoid carcinoma. Of the 16 PMMF reconstructions, 13 flaps were applied as primary reconstructive procedures, whereas three flaps were; salvage; procedures (vascularized free flap failure). Twelve patients had complications such as wound dehiscence, infection, hematoma, fistula, flap bulkiness, and partial flap necrosis. The higher complication rates showed an association with utilization of the flap in preoperative radiotherapy cases. However, all patients were discharged without failure. Conclusion: In reconstructive oromaxillofacial surgery, the PMMF is still a useful flap for huge defects. In addition, the PMMF can be used as a salvage procedure after vascularized free flap failure and reconstruction for patients with a history of preoperative radiotherapy.

• Archives of Plastic Surgery
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• 제49권1호
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• pp.29-33
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• 2022

The application of minimal invasive mastectomy has allowed surgeons to perform nipples-paring mastectomy via a shorter, inconspicuous incision under clear vision and with more precise hemostasis. However, it poses new challenges in microsurgical breast reconstruction, such as vascular anastomosis and flap insetting, which are considerably more difficult to perform through the shorter incision on the lateral breast border. We propose an innovative technique of transcutaneous medial fixation sutures to help in flap insetting and creating and maintaining the medial breast border. The sutures are placed after mastectomy and before flap transfer. Three 4-0 nylon suture loops are placed transcutaneously and into the pocket at the markings of the preferred lower medial border of the reconstructed breast. After microvascular anastomosis and temporary shaping of the flap on top of the mastectomy skin, the three corresponding points for the sutures are identified. The three nylon loops are then sutured to the dermis of the corresponding medial point of the flap. The flap is placed into the pocket by a simultaneous gentle pull on the three sutures and a combined lateral push. The stitches are then tied and buried after completion of flap inset.