6축 복합형상 가공기용 스핀들헤드의 성능분석

박장완,김광영,최병오 한국정밀공학회 1998 한국정밀공학회 학술발표대회 논문집 Vol.1998 No.5월

안면부재건술에서 사용되는 다양한 피판의 색조 비교

박장완,김의식,황재하,김광석,이삼용 대한성형외과학회 2009 Archives of Plastic Surgery Vol.36 No.4

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(∆E) of tissue expanded cheek flap and deltopectoral flap were 7.45 ± 5.78 versus 9.41 ± 7.09, and that of radial forearm free flap was 11.74 ± 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.

하천의 어제, 오늘 그리고 내일 - 공지천의 생태와 미래

박장완,Park, Jang-Wan 한국하천협회 2010 하천과 문화 Vol.6 No.2

“정규직노조 앞장 서야 비정규직 조직화가 가능합니다”

박장완 한국비정규노동센터 2004 비정규 노동 Vol.2004 No.1ㆍ2

복합구조 로봇의 힘제어

박장완(Jang-wan Park),최병오(Byung-oh Choi),김광영(Kwang-young Kim),김상봉(Sang-bong Kim) 한국정밀공학회 1999 한국정밀공학회 학술발표대회 논문집 Vol.1999 No.5월

Risk Acceptance and Expectations of Laryngeal Allotransplantation

조현교,박장완,황재하,김광석,이삼용,신준호 대한성형외과학회 2014 Archives of Plastic Surgery Vol.41 No.5

Background: Laryngeal allotransplantation (LA) is a technique involving transplantation of adeceased donor’s larynx into a recipient, and it may be substituted for conventional laryngealreconstruction. There are widely different views on LA, as the recipient is administeredcontinuous, potentially life-threatening, immunosuppressive therapy for a functional oraesthetic result, which is not directly related to life extension. The purpose of this study wasto analyze the difference in risk acceptance and expectations of LA between four populationgroups. Methods: A survey was performed to examine patients’ risk acceptance and expectations ofLA. The survey included 287 subjects in total (general public, n=100; kidney transplant recipients,n=53; post-laryngectomy patients, n=34; doctors, n=100), using a Koreantranslated version of the louisville instrument for transplantation (LIFT) questionnaire. Results: All four groups responded differently at various levels of their perception in riskacceptance and expectations. The kidney transplant recipients reported the highest risk acceptanceand expectations, and the doctor group the lowest. Conclusions: This study examined the disparate perception between specific population groupsof the risks and benefits of using LA for the promotion of the quality of life. By addressing theinformation gaps about LA in the different populations that have been highlighted from thissurvey, we suggest that LA can become a more

Gynecomastia Surgery Is Associated with Improved Nipple Location in Young Korean Patients

이보형,권유진,박장완,황재하,김광석,이삼용 대한성형외과학회 2014 Archives of Plastic Surgery Vol.41 No.6

Background: Gynecomastia is benign enlargement of breast tissue in males and is fairlycommon. Mastectomy not only helps in improving the shape of anterior chest, but can alsoimprove the location of nipple. Therefore, a principle element of mastectomy design isdefining the normal location of nipple based on major anatomical reference points. Here, thenipple location was compared for before and after gynecomastia surgery. In addition, thesame was also compared between male patients undergoing gynecomastia surgery and controlgroup of subjects without gynecomastia. Methods: We retrospectively analyzed gynecomastia patients who underwent conventionalsubcutaneous mastectomy. Preoperative and postoperative anatomical landmark distancesand chest circumferences were measured and compared to the same anthropometric datafrom 20 healthy adult male controls. Results: Nipple locations were compared among 13 patients and 20 controls. The meanweight of resected breast tissue was 246 g, and overall patient satisfaction grade was 4.3 outof 5. In the patient group, the slopes for the height–distance from the sternal notch to thenipple and chest circumference–distance between the mid-line of the sternum and the nipplewere 0.175 and 0.125 postoperatively, respectively. The slopes of the control group were 0.122and 0.177, respectively; these differences were statistically significant (P<0.05). Conclusions: Nipple positions were considerably lower in patients with gynecomastia than incontrol subjects. Subcutaneous mastectomy was associated with mild elevations, butpostoperative locations were still lower compared to controls. Further efforts are needed toimprove the location of postoperative nipple-areola complex in patients with gynecomastia.

병렬기구의 연구 개발 현황

최병오,김광영,박장완,Choe, Byeong-O,Kim, Gwang-Yeong,Park, Jang-Wan 재료연구소 1999 機械와 材料 Vol.11 No.4

대내전근 천공지 도상피판을 이용한 좌골부 연부조직결손의 재건

김의식,황재하,김광석,이삼용,박장완 대한성형외과학회 2009 Archives of Plastic Surgery Vol.36 No.5

Purpose: Surgical reconstruction of an ischial soft tissue defect presents a challenging problem owing to a high rate of recurrence, especially in paraplegic patients. Although various muscle, musculocutaneous and fasciocuta- neous flaps have been used in the reconstruction of ischial soft tissue defect, it is still controversial which type of flaps are the best. We had performed a relatively durable adductor magnus perforator island flap based on the perforators originated from the first medial branch of the profunda femoris artery for coverage of ischial soft tissue defect where was not a region universally reconstructed by perforator flap. Methods: From August 2005 to January 2008, the adductor magnus perforator island flap were used for resurfacing of the ischial soft tissue defects in a series of 6 patients(4 male and 2 female). Ages ranged from 26 to 67 years(mean, 47.5 years), and follow-up period from 13 to 26 months(mean, 16.7 months). Causes were 4 pressure ulcers, 1 cellulitis and 1 suppurative keratinous cyst. Results: The sizes of these flaps ranged from 12 to 18cm in length and 7 to 9cm in width. The flaps survived in all patients. Marginal loss over the distal area of the flap by infection was noted in one patient, which was treated successfully with a subsequent split-thickness skin graft. Average thickness of the flap was 0.94cm, which was more thicker than other perforator flaps. Long term follow- up showed a good flap durability. Conclusion: In planning a reconstructive option of ischial soft tissue defect, the adductor magnus perforator island flap is a relatively large cutaneous flap with a durable thickness. With proper patient selection, careful vascular dissection and postoperative management, we recommend this flap as a good and suitable option for coverage of the ischial soft tissue defect.