1.Facial Flap Repositioning in Posttraumatic Facial Asymmetry.
Il Hwan BYUN ; Dahn BYUN ; Woo Yeol BAEK
Archives of Craniofacial Surgery 2016;17(4):240-243
Perfect facial and body symmetry is an important aesthetic concept which is very difficult, if not impossible, to achieve. Yet, facial asymmetries are commonly encountered by plastic and reconstructive surgeons. Here, we present a case of posttraumatic facial asymmetry successfully treated with a unique concept of facial flap repositioning. A 25-year-old male patient visited our department with severe posttraumatic facial asymmetry. There was deviated nasal bone and implant to the right, and the actual facial appearance asymmetry was much more severe compared to the computed tomography, generally shifted to the right. After corrective rhinoplasty, we approached through intraoral incision, and much adhesion from previous surgeries was noted. We meticulously elevated the facial flap of both sides, mainly involving the cheeks. The elevated facial flap was shifted to the left, and after finding the appropriate location, we sutured the middle portion of the flap to the periosteum of anterior nasal spine for fixation. We successfully freed the deviated facial tissues and repositioned it to improve symmetry in a single stage operation. We conclude that facial flap repositioning is an effective technique for patients with multiple operation history, and such method can successfully apply to other body parts with decreased tissue laxity.
Adult
;
Cheek
;
Facial Asymmetry*
;
Human Body
;
Humans
;
Male
;
Methods
;
Nasal Bone
;
Periosteum
;
Plastics
;
Rhinoplasty
;
Spine
;
Surgeons
;
Surgical Flaps
2.The Keystone Flap in Greater Trochanter Pressure Sore.
Il Hwan BYUN ; Soon Sung KWON ; Seum CHUNG ; Woo Yeol BAEK
Archives of Reconstructive Microsurgery 2016;25(2):72-74
The keystone flap is a fascia-based island flap with two conjoined V-Y flaps. Here, we report a case of successful treatment of a trochanter pressure sore patient with the traditional keystone flap. A 50-year-old male patient visited our department with a 3×5 cm pressure sore (grade III) to the left of the greater trochanter that was covered with eschar. Debridement was done and the defect size increased to 5×8 cm in an elliptical shape. Doppler ultrasound was then used to locate the inferior gluteal artery perforator near the wound. The keystone flap was designed to the medial side. The perforator based keystone island flap covered the defect without resistance. The site remained clean, and no dehiscence, infection, hematoma, or seroma developed. In general, greater trochanter pressure sores are covered with a perforator based propeller flap or fascia lata flap. However, these flaps have the risk of pedicle kinking and require a large operation site. For the first time, we successfully applied the keystone flap to treat a greater trochanter pressure sore patient. Our design was also favorable with the relaxation skin tension lines. We conclude that the keystone flap including a perforator is a reliable option to reconstruct trochanteric pressure sores.
Arteries
;
Debridement
;
Fascia Lata
;
Femur*
;
Hematoma
;
Humans
;
Male
;
Middle Aged
;
Pressure Ulcer*
;
Relaxation
;
Seroma
;
Skin
;
Ultrasonography
;
Wounds and Injuries
3.Perforator Based Tibialis Anterior Segmental Muscle Island Flap in Lower Extremity Reconstruction.
Il Hwan BYUN ; Soon Sung KWON ; Seum CHUNG ; Woo Yeol BAEK
Archives of Reconstructive Microsurgery 2016;25(2):69-71
Reconstruction of the lower extremities is difficult due to a lack of skin laxity and muscular tissues. Here, we present a case of lower extremity reconstruction via the anterior tibial artery perforator based segmental muscle island flap. Our patient was a 75-year-old male with a chronic ulcerative wound on the right lower leg from an old car accident. A 5.0×0.5 cm size ulcerative wound with tibial bone exposure was noted. We planned to reconstruct the lower extremity defect with a free flap, but the vessel status was severely compromised intraoperatively. Thus, we found the anterior tibial artery perforator using Doppler ultrasound, elevated the tibialis anterior muscle segment flap, and transposed it to cover the defect successfully. The flap presented with a nice contour and the skin graft covering the flap survived completely. There were no complications of the surgical site at three months follow-up and no gait morbidity. This is a meaningful case applying the concept of segmental muscle flap based on a perforator that had advantages including proper bulkiness, vascularization, and preservation of function, which were well applied, leading to great success.
Aged
;
Follow-Up Studies
;
Free Tissue Flaps
;
Gait
;
Humans
;
Leg
;
Lower Extremity*
;
Male
;
Perforator Flap
;
Skin
;
Tibial Arteries
;
Transplants
;
Ulcer
;
Ultrasonography
;
Wounds and Injuries
4.Nuss Procedures using a Transilluminated Introducer.
Seong Jin LEE ; Kang Seok BAEK ; Cheol Woo JEON ; Seock Yeol LEE ; Chol Sae LEE
The Korean Journal of Thoracic and Cardiovascular Surgery 2008;41(6):803-806
The Nuss procedure has good cosmetic effects, but it could be cause of bleeding and organ injury during dissection of the anterior mediastinum. We have made an effort to overcome the defects of the traditional method through the anterior mediastinum, thus we developed a transilluminated introducer that made it safer and simpler to operate within a 1 cm incision only. A total of 67 patients underwent the Nuss procedure using the transilluminated introducer. Thirty-six patients underwent the procedure with the transilluminated introducer only (age<14 years). Thirty-one patients had an additional thoracoscopy (age> or =14 years). There were no major complications, such as massive bleeding or organ injury in the thoracic cavity during or after the Nuss procedure. Our findings demonstrated that the anterior mediastium could be dissected simply and safely by the use of a transilluminated introducer during the Nuss procedure without fatal major complications, such as bleeding and organ injury.
Cosmetics
;
Funnel Chest
;
Hemorrhage
;
Humans
;
Mediastinum
;
Thoracic Cavity
;
Thoracic Wall
;
Thoracoscopy
5.A Retrospective Analysis of Ruptured Breast Implants.
Woo Yeol BAEK ; Dae Hyun LEW ; Dong Won LEE
Archives of Plastic Surgery 2014;41(6):734-739
BACKGROUND: Rupture is an important complication of breast implants. Before cohesive gel silicone implants, rupture rates of both saline and silicone breast implants were over 10%. Through an analysis of ruptured implants, we can determine the various factors related to ruptured implants. METHODS: We performed a retrospective review of 72 implants that were removed for implant rupture between 2005 and 2014 at a single institution. The following data were collected: type of implants (saline or silicone), duration of implantation, type of implant shell, degree of capsular contracture, associated symptoms, cause of rupture, diagnostic tools, and management. RESULTS: Forty-five Saline implants and 27 silicone implants were used. Rupture was diagnosed at a mean of 5.6 and 12 years after insertion of saline and silicone implants, respectively. There was no association between shell type and risk of rupture. Spontaneous was the most common reason for the rupture. Rupture management was implant change (39 case), microfat graft (2 case), removal only (14 case), and follow-up loss (17 case). CONCLUSIONS: Saline implants have a shorter average duration of rupture, but diagnosis is easier and safer, leading to fewer complications. Previous-generation silicone implants required frequent follow-up observation, and it is recommended that they be changed to a cohesive gel implant before hidden rupture occurs.
Breast Implantation
;
Breast Implants*
;
Contracture
;
Diagnosis
;
Follow-Up Studies
;
Retrospective Studies*
;
Rupture
;
Silicone Gels
;
Transplants
6.Methodology in Conventional Head and Neck Reconstruction Following Robotic Cancer Surgery:A Bridgehead Robotic Head and Neck Reconstruction
Jongmin WON ; Jong Won HONG ; Mi Jung KIM ; In-sik YUN ; Woo Yeol BAEK ; Won Jai LEE ; Dae Hyun LEW ; Yoon Woo KOH ; Se-Heon KIM
Yonsei Medical Journal 2022;63(8):759-766
Purpose:
Robotic head and neck surgery is widespread nowadays. However, in the reconstruction field, the use of robotic operations is not. This article aimed to examine methodologies for conventional head and neck reconstruction after robotic tumor surgery in an effort to obtain further options for future reconstruction manipulations.
Materials and Methods:
A retrospective review of all patients who received head and neck robot surgery and conventional reconstructive surgery between October 2016 and September 2021.
Results:
In total, 53 cases were performed. 67.9% of the tumors were greater than 4 cm. Regarding defect size, 47.2% of the lesions were greater than 8 cm. In terms of TNM stage, stage 3 disease was recorded in 26.4% and stage 4 in 52.8%. To make a deep and narrow field wider, we changed the patient’s posture in pre-op field, additional dissection was done. We used radial forearm flap mostly (62.2%).
Conclusion
Conventional head and neck reconstruction after robotic ENT cancer surgery is possible. One key step is to secure additional space in the deep and narrow space left after robotic surgery. For this, we opted for a radial forearm flap mostly. This can be performed as a bridgehead to perform robotic head and neck reconstruction.
7.Patient Satisfaction with Implant Based Breast Reconstruction Associated with Implant Volume and Mastectomy Specimen Weight Ratio.
Woo Yeol BAEK ; Il Hwan BYUN ; Young Seok KIM ; Dae Hyun LEW ; Joon JEONG ; Tai Suk ROH
Journal of Breast Cancer 2017;20(1):98-103
PURPOSE: Breast volume assessment is one of the most important steps during implant-based breast reconstruction because it is critical in selecting implant size. According to previous studies, there is a close relationship between the mastectomy specimen weight and resected breast volume. The aim of this study was to evaluate long-term patient satisfaction with implant-based breast reconstruction guided by the ratio of implant volume to mastectomy specimen weight. In doing so, we describe the ideal ratio for patient satisfaction. METHODS: A total of 84 patients who underwent implant-based breast reconstruction for breast cancer were included in this study. The patients were grouped by the ratio of implant size to mastectomy specimen weight (group 1, <65%; group 2, 65%–75%; and group 3, >75%). Outcome analysis was performed using a questionnaire of patient satisfaction and the desired implant size. RESULTS: Patient satisfaction scores concerning the postoperative body image, size, and position of the reconstructed breast were significantly higher in group 2. The average ratio of the ideal implant volume to mastectomy specimen weight for each group was 71.9% (range, 54.5%–96.7%), with the differences across the three groups being not significant (p=0.244). CONCLUSION: Since there is an increase in breast reconstruction, selecting the appropriate breast implant is undoubtedly important. Our novel technique using the ratio of implant volume to mastectomy specimen weight provides physicians a firm guide to intraoperative selection of the proper implant in reconstructive breast surgery.
Body Image
;
Breast Implants
;
Breast Neoplasms
;
Breast*
;
Female
;
Humans
;
Mammaplasty*
;
Mastectomy*
;
Patient Satisfaction*
8.Prevalence of Metabolic Syndrome and Waist Circumference Estimation in Some Korean Adults.
Young Seoub HONG ; Byoung Gwon KIM ; Baek Geun JEONG ; Yong Woo PARK ; Jong Tae PARK ; Kap Yeol JUNG ; Joon Youn KIM
Korean Journal of Preventive Medicine 2004;37(1):51-58
OBJECTIVE: The purpose of this study was to estimate the prevalence of metabolic syndrome, as defined by the ATP III report, in some Korean adults and use the Asian-Pacific proposed waist circumference to investigate waist circumference in some Korean adults using ROC curves. METHODS: Study subjects were seventy-five thousands and ninety one persons (47, 979 men and 27, 111 women) who were selected among the patients who visited hospital for health evaluation from January 2000 to December 2001. All subjects were measured by height, weight, waist and hip circumferences, blood pressure and blood chemistry (lipid profile). RESULTS: The mean age was 41.6+/-8.5 years in men, 41.1+/-10.4 years in women (p< 0.05). Body mass index was in the normal range in 35.3% of men, and 55.9% of women. In both men and women, blood pressure, blood sugar, total cholesterol and triglyceride were positively correlated with BMI. waist circumference, and Broca's index (p< 0.01). However HDL. choloesterol was correlated negatively (p< 0.01). Using ROC curve, the calculated waist circumferences were 84 cm in men (sensitivity 61.4% and specificity 64.1%) and 74 cm in women (sensitivity 65.0% and specificity 73.2%). The age adjusted prevalences of the metabolic syndrome as defined by NCEP ATP III were different for men (6.4%) and women (14.6%). The prevalence increased from 1.2% among participants aged 20 through 29years to 15.0% among participants aged over 60years in men (p< 0.05) and from 1.6% to 27.4% respectively, in women. The age adjusted prevalences, as defined by using the waist circumference that was recommended by WHO's regional office for the western Pacific, were 10.6% in men and 18.5% in women. The age adjusted prevalences, as defined by using the waist circumference that was calculated by the ROC curves, were 17.1% in men and 22.4% in women. And All prevalences were increased following increased BMI and Broca's index. CONCLUSIONS: The prevalence of metabolic syndrome in some Korean adults was lower than that in western adults. Nevertheless because waist circumference was differed among race and region, application of the same criteria was not proper. Morcover, a higher awareness was required in women, because the prevalence of metabolic syndrome was rapidly increased with increment of age.
Adenosine Triphosphate
;
Adult*
;
Blood Glucose
;
Blood Pressure
;
Body Mass Index
;
Chemistry
;
Cholesterol
;
Continental Population Groups
;
Female
;
Hip
;
Humans
;
Male
;
Obesity
;
Prevalence*
;
Reference Values
;
ROC Curve
;
Sensitivity and Specificity
;
Triglycerides
;
Waist Circumference*
9.A Novel Synthetic Compound 3-Amino-3-(4-Fluoro-Phenyl)-1H-Quinoline-2,4-Dione (KR22332) Exerts a Radioprotective Effect via the Inhibition of Mitochondrial Dysfunction and Generation of Reactive Oxygen Species.
Seung Jae BAEK ; Jae Won CHANG ; Keun Hyung PARK ; Garp Yeol YANG ; Hye Sook HWANG ; Yoon Woo KOH ; Young Sik JUNG ; Chul Ho KIM
Yonsei Medical Journal 2014;55(4):886-894
PURPOSE: Acute side effects of radiation such as oral mucositis are observed in most patients. Although several potential radioprotective agents have been proposed, no effective agent has yet been identified. In this study, we investigated the effectiveness of synthetic compound 3-amino-3-(4-fluoro-phenyl)-1H-quinoline-2,4-dione (KR22332) as a radioprotective agent. MATERIALS AND METHODS: Cell viability, apoptosis, the generation of reactive oxygen species (ROS), mitochondrial membrane potential changes, and changes in apoptosis-related signaling were examined in human keratinocyte (HaCaT). RESULTS: KR22332 inhibited irradiation-induced apoptosis and intracellular ROS generation, and it markedly attenuated the changes in mitochondrial membrane potential in primary human keratinocytes. Moreover, KR22332 significantly reduced the protein expression levels of ataxia telangiectasia mutated protein, p53, and tumor necrosis factor (TNF)-alpha compared to significant increases observed after radiation treatment. CONCLUSION: KR22332 significantly inhibited radiation-induced apoptosis in human keratinocytes in vitro, indicating that it might be a safe and effective treatment for the prevention of radiation-induced mucositis.
Apoptosis/drug effects/physiology
;
Cell Line, Tumor
;
Cell Survival/drug effects/physiology
;
Humans
;
Keratinocytes/metabolism
;
Membrane Potential, Mitochondrial/drug effects/physiology
;
Radiation-Protective Agents/chemistry/*pharmacology
;
Reactive Oxygen Species/metabolism
10.A Novel Synthetic Compound 3-Amino-3-(4-Fluoro-Phenyl)-1H-Quinoline-2,4-Dione (KR22332) Exerts a Radioprotective Effect via the Inhibition of Mitochondrial Dysfunction and Generation of Reactive Oxygen Species.
Seung Jae BAEK ; Jae Won CHANG ; Keun Hyung PARK ; Garp Yeol YANG ; Hye Sook HWANG ; Yoon Woo KOH ; Young Sik JUNG ; Chul Ho KIM
Yonsei Medical Journal 2014;55(4):886-894
PURPOSE: Acute side effects of radiation such as oral mucositis are observed in most patients. Although several potential radioprotective agents have been proposed, no effective agent has yet been identified. In this study, we investigated the effectiveness of synthetic compound 3-amino-3-(4-fluoro-phenyl)-1H-quinoline-2,4-dione (KR22332) as a radioprotective agent. MATERIALS AND METHODS: Cell viability, apoptosis, the generation of reactive oxygen species (ROS), mitochondrial membrane potential changes, and changes in apoptosis-related signaling were examined in human keratinocyte (HaCaT). RESULTS: KR22332 inhibited irradiation-induced apoptosis and intracellular ROS generation, and it markedly attenuated the changes in mitochondrial membrane potential in primary human keratinocytes. Moreover, KR22332 significantly reduced the protein expression levels of ataxia telangiectasia mutated protein, p53, and tumor necrosis factor (TNF)-alpha compared to significant increases observed after radiation treatment. CONCLUSION: KR22332 significantly inhibited radiation-induced apoptosis in human keratinocytes in vitro, indicating that it might be a safe and effective treatment for the prevention of radiation-induced mucositis.
Apoptosis/drug effects/physiology
;
Cell Line, Tumor
;
Cell Survival/drug effects/physiology
;
Humans
;
Keratinocytes/metabolism
;
Membrane Potential, Mitochondrial/drug effects/physiology
;
Radiation-Protective Agents/chemistry/*pharmacology
;
Reactive Oxygen Species/metabolism