• Journal of the Korean Society for Aeronautical & Space Sciences
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• v.35 no.10
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• pp.899-904
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• 2007

During the conceptual design phase of fighter class aircraft, the high speed wind tunnel test with 1/20 scale wing-body-tail model has been conducted to investigate the effects of leading edge flap deflection on the supersonic cruise performance of the aircraft. To select the proper leading edge flap deflection for the wind tunnel test, the aerodynamic characteristics due to various leading edge flap deflections have been analyzed by using corrected supersonic panel method. Based on the results obtained from the experimental and numerical approaches, the effects of leading edge flap deflection have shown to be useful to enhance the supersonic cruise performance of fighter class aircraft.

• Archives of Plastic Surgery
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• v.32 no.4
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• pp.441-446
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• 2005

Sole reconstruction should consider both functional and aesthetic aspects; durable weight bearing surface, adequate contour for normal footwear, protective sensation and solid anchoring to deep tissue to resist shearing. The anterolateral thigh perforator free flap has such favorable characteristics as long pedicle, reliable perforators and minimal donor site morbidity. This flap can be safely thinned to 3-4 mm. It can also be elevated with sufficient bulk with muscles like vastus lateralis for complex defect. Between June 2002 and December 2004, 48 cases of sole reconstruction were performed with anterolateral thigh perforator free flaps. Follow up period ranged from 4 to 34 months with a mean of 14.7 months and with exception of one case, all flaps survived. One case of total flap loss was noted due to infection in a patient who was administered lifetime immunosuppressant. Partial necroses developed in three cases but were treated conservatively. Satisfactory aesthetic and functional results were achieved and acceptable gait recovery was noted. Seventy-eight percent of the patients regained protective sensation by 6 months and earlier sensory recovery was noted in sensate flap group. The authors also present a standardized protocol for preoperative patient evaluation and postoperative management and rehabilitation.

• Korean Journal of Head & Neck Oncology
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• v.17 no.2
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• pp.216-220
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• 2001

There are many approaches in surgery of posterior hypopharyngeal wall cancer according to location, extent, and invasion depth of primary cancer. And many reconstruction methods have been used in reconstruction of surgical defect remaining after wide resection of primary cancer. Posterior hypopharyngeal wall cancer is relatively rare, so its surgical experiences are fewer than those of pyriform sinus cancer and there have been few reports of surgical approaches and reconstruction methods of posterior hypopharyngeal wall cancer. Recently, we experienced a case of posterior hypopharyngeal wall cancer reconstructed with longus colli flap and skin graft after failure of radial forearm free flap in a 72-year -old man and report it with the review of the literatures.

• Archives of Craniofacial Surgery
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• v.21 no.1
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• pp.69-72
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• 2020

Hemangioma is a benign vascular tumor that grows by endothelial cell hyperplasia. It occurs most frequently in the head and neck region. Nose reconstruction is tricky because of its unique three-dimensional structure and different tissue components. We report a case of successful reconstruction of near-total nose defect using the paramedian forehead flap combined with a nasolabial flap, immediately after excision of nasal hemangioma. A 49-year-old male patient was presented with a huge mass at the nose. Preoperative magnetic resonance imaging showed prominent vascular channels extending to the forehead and cheek. Complete resection of the mass was performed, which resulted in an eccentric defect. The right paramedian forehead flap and the left nasolabial flap were designed and transferred to the defect. Flap division was performed 1 month later. The patient is satisfied with the overall appearance and did not develop any functional deficit.

• Journal of Periodontal and Implant Science
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• v.31 no.1
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• pp.233-242
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• 2001

In the treatment of chronic adult periodontitis, scaling and root planing have been generally performed prior to periodontal flap surgery. The purpose of this study was to evaluate the clinical significance of nonsurgical periodontal therapy prior to periodontal flap surgery in patients with chronic adult periodontitis. Fifty six molars showing bilateral bony defects and 4-6mm periodontal pocket in twelve patients with chronic adult periodontitis were selected. By randomized split-mouth design, in one side, flap operation was performed 4 weeks after scaling and root planing, in the other group, flap operation was only performed without scaling and root planing. Probing pocket depth, gingival recession, clinical attachment level, gingival index, plaque index, and tooth mobility were measured at baseline, before flap operation and post-operation

• Maxillofacial Plastic and Reconstructive Surgery
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• v.33 no.6
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• pp.525-528
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• 2011

A deep circumflex iliac artery (DCIA) flap is usually used for reconstruction in oral and maxillo-facial surgery department since introduced by O'Brien in 1975. Various flap designs are possible for osteomusculocutaneous, musculocutaneous, musculosseous and vascularized bone types. Iliac crest shape is similar to contour of mandible. Moreover, though a fibular flap has only 15~20 mm of cutting plane width, a DCIA flap contains much more bone amount, making this a similar reconstruction compare with normal mandible. A 68 year-old male with squamous cell carcinoma on the anterior floor of the mouth had an impression with T2N0Mx and the treatment procedure was DCIA reconstruction after wide resection and marginal mandibulectomy, with both supraomohyoid neck dissection. We present an experience of DCIA flap for reconstruction with a literature review.

• Archives of Plastic Surgery
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• v.38 no.1
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• pp.19-26
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• 2011

Purpose: This is the report on the results of 150 consecutive cases of delayed postmastectomy reconstruction with TRAM flap performed by single surgeon. The purpose of this study is to review the merits, demerits and other considerations of this method by analyzing the results. Methods: 150 patients were reviewed retrospectively who had breast reconstruction by a single surgeon from July 2001 to July 2008. Reviewed factors include demographic factors, mastectomy method, adjuvant therapies (such as radiation, chemotherapy) complication rate, simultaneous contralateral breast procedure rate, secondary touch-up procedure rate, and patients' satisfaction. Results: Ovarall TRAM flap complication rate was 22.6%. Among them, donor site complication rate was 36%, simultaneous contralateral breast procedure rate was 44.6%, secondary touch-up procedure rate was 40%. All rates were higher compared to immediate reconstruction with TRAM flap. But the patients' satisfaction was about the same as immediate reconstruction. Conclusion: Delayed postmastectomy reconstruction with TRAM flap can yield satisfactory results despite of relatively high complication rate and concomitant procedure rate when it is performed by a experienced surgeon.

• Archives of Plastic Surgery
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• v.47 no.6
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• pp.619-621
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• 2020

This article portrays the authors' clinical experience of a complex case of lower extremity reconstruction using a recycled pedicle from 10 years old free latissimus dorsi musculocutaneous flap to supply a new free anterolateral thigh flap for proximal tibia wound defect reconstruction. It provides clinical evidence that muscle neovascularization occurs and supports the dogma peripheral tissue neovascularization. This case stipulates that recycling of pedicle is feasible, when used with appropriate strategy and safety and also provides evidence for the long-term survival of greater saphenous vein grafts in lower extremity reconstruction.

• Archives of Reconstructive Microsurgery
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• v.9 no.1
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• pp.37-43
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• 2000

Vascularized tissue coverage is necessary for treatment of soft tissue defect with bone and tendon exposure on hand and foot dorsum, which cannot be successfully covered with simple skin graft or local flap. The temporal fascia is one of the most ideal donor for coverage of soft tissue defect of dorsum of hand or foot in term of ultra-thin, pliable and highly vascular tissue. Also, this flap offers the advantage of a well-concealed donor site in the hair-bearing scalp and smooth tendon gliding. We have experienced 11 cases of reconstruction for soft tissue defect in the hand or foot using temporal fascial flap with skin graft. All cases survived completely and we could gain satisfactory functional results. There were no specific complications except one donor site alopecia We think that the free temporal fascial flap coverage is a highly reliable method for soft tissue defect in hand and foot dorsum. However, the potential pitfalls is secondary alopecia and requirement of skin graft after its transfer.

• Archives of Reconstructive Microsurgery
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• v.7 no.2
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• pp.129-134
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• 1998

The ability for tissue transfer based on microvascular anastomosis has created a revolution in microsurgical free tissue transplantation. The advantages of cutaneous flaps are that they are soft, durable and provide a good cosmetic reconstruction and muscle flaps have a more vigorous blood supply and a longer, larger vascular pedicle than cutaneous flaps. From June 1992 through May 1997, 68 patients had received reconstructive microsurgery in the lower extremity at Department of Orthopedic Surgery, Chonbuk National University Hospital. The results were as follows. 1. The age distribution was from 15 years of age to 67 and male were 59 cases and female 9 cases. 2. The most common cause was traffic accident(54 cases, 79.4%) and followed chronic osteomyelitis(9 cases, 13.2%), industrial accident(3 cases, 4.4%), burn(1 case, 1.5%) and farm injury(1 case, 1.5%). 3. Latissimus dorsi myocutaneous flap were 25 cases(36.8%), rectus abdominis muscle flap 21 cases(30.9%), gracilis muscle flap 10 cases(14.7%), dorsalis pedis flap 9 cases(13.2%), groin 2(2.9%) and vascularized iliac osteocutaneous flap 1(1.5%). 4. 61 cases(89.7%) of 68 cases were survived and the exposed vital tissues and bones were covered and revealed good cosmetic results.