• Asian-Australasian Journal of Animal Sciences
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• 제28권7호
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• pp.922-925
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• 2015

This study was conducted to estimate the genetic parameters for pork belly traits and muscles in Yorkshire pigs. Each pork belly was cut into nine parts perpendicular to the thoracic vertebrae (6th to 14th). Traits of belly muscles including the deep pectoral, latissimus dorsi, cutaneous trunci, rectus abdominis, external and internal abdominal oblique from 382 purebred pigs were recorded and analyzed using SAS Package (9.1) and Derivative-free restricted maximum likelihood methods. Heritability estimates for belly traits ranged from 0.27 to 0.49, while they were 0.12 to 0.66 for belly muscles. Moderate to high heritability estimates were noted in belly weight (0.33), belly length (0.28), and belly width (0.49). In belly muscles, the latissimus dorsi and deep pectoral, which are located only in the 6th to 9th vertebrae sections, were found to have heritability estimates ranging from 0.21 to 0.29 and 0.23 to 0.35, respectively. Strong heritability estimates were observed in the 7th to 13th sections of cutaneous trunci muscle ranging from 0.42 to 0.66. Genetic correlations of latissimus dorsi m. with belly length were positive (0.50), while cutaneous trunci m. with belly weight also revealed a positive relationship that ranged from 0.35 to 0.47. The estimated genetic parameters indicate that belly weight can be improved by genetic selection. Differences in the levels of heritability occurred among various parameters of Yorkshire pork belly, which should be considered when performing selection to improve pork belly quality. Moreover, these results can provide valuable information that can be used as the basis for further investigations to improve pork belly.

• Archives of Plastic Surgery
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• 제40권2호
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• pp.117-122
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• 2013

Background Latissimus dorsi (LD) myocutaneous flap is a popular method of breast reconstruction which can be associated with high incidence of seroma formation. Quilting sutures at the harvest site are used to reduce this. Barbed sutures are self anchoring sutures which avoid multiple knotting and can be useful in quilting. Methods A retrospective analysis of prospectively maintained database of patients who underwent LD flap breast reconstruction between January 2009 and January 2011 was carried out. Seroma formation at the harvest site, wound related complications, inpatient stay and duration of surgery were analysed and a comparison was made between two groups where quilting was done with barbed (V-Loc) suture and conventional polydioxanone (PDS) II sutures. Results Fifty-seven patients were included of which 33 had quilting by V-Loc sutures and in 24 patients PDS II suture was used. Median age in the PDS group was 55 years (interquartile range [IQR)], 45 to 61 years) which was comparable to the V-Loc group (53 years [IQR, 48 to 59 years]; P-value 0.948). Sixteen patients (28%) had significant seroma formation and 5 (9%) patients developed superficial wound dehiscence. Incidences of seroma or wound complications were comparable (P-value 0.378 and 1.00, respectively). Secondary outcomes such as total duration of surgery, total inpatient stay, total amount of drain at the donor site were also similar in two groups. Conclusions Use of barbed sutures for quilting the donor site in LD flap reconstruction is a feasible option and the associated seroma formation and wound complications are comparable with conventional sutures.

• Archives of Reconstructive Microsurgery
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• 제6권1호
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• pp.56-62
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• 1997

Latissimus dorsi(LD) muscle is the largest transplantable block of vascularized tissue. Since LD free flap was introduced in 1970's, this flap has been widely used for the reconstruction of large soft tissue defect of the limb. From 1981 to 1996, we had experienced 37 cases of LD free flap. Serratus anterior muscle was combined with LD in three of them whose defects were very large. The average age of the patients was 31 years(range : 4-74 years), and thirty one patients were male. Trauma was cause of the defect in every case. For the recipient sites, the foot and ankle was the most common(22 cases); and the knee and lower leg(11 cases), the elbow and forearm(2 cases), the hand(2 cases) were the next. The duration of follow-up was averaged as 16 months(range: 6 months-12 years). Thirty one cases(84%) out of 37 were successful transplantations. In one case the failure of the flap was due to heart attack and subsequent death of the patient. One failure was caused by sudden violent seizure of the patient who had organic brain damage. Immediate reexploration of the flap was performed in 4 patients, and the flap survived in three of them. There was one necrosis of the grafted split-thickness skin on the survived LD flap. LD free flap was considered as one of the good methods, for the reconstruction of the large soft tissue defect of the limb.

• Archives of Reconstructive Microsurgery
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• 제20권1호
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• pp.8-13
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• 2011

Purpose: A palatal defect following maxillectomy can cause multiple problems like the rhinolalia, leakage of foods into the nasal cavity, and hypernasality. Use of a prosthetic is the preferred method for obturating a palate defect, but for rehabilitating palatal function, prosthetics have many shortcomings. In a small defect, local flap is a useful method, however, the size of flap which can be elevated is limited. In 12 cases of palatomaxillary defect, we used various microvascular free flaps in reconstructing the palate and obtained good functional results. Method: Between 1990 and 2004, 12 patients underwent free flap operation after head and neck cancer ablation, and were reviewed retrospectively. Among the 12 free flaps, 6 were latissimus dorsi myocutaneous flaps, 3 rectus abdominis myocutaneous flaps, and 3 radial forearm flaps. Result: All microvascular flap surgery was successful. Mean follow up time was 8 months and after the follow up time all patients reported satisfactory speech and swallowing. Wound dehiscence was observed in 4 cases, ptosis was in 1 case and fistula was in 1 case, however, rhinolalia, leakage of food, or swallowing difficultly was not reported in the 12 cases. Conclusion: We used various microvascular flaps for palatomaxillary reconstruction. For 3-dimensional flap needs, we used the latissimus dorsi myocutaneous flap to obtain enough volume for filling the defect. Two-dimensional flaps were designed with latissimus dorsi myocutaneous flap, rectus abdominis flap and radial forearm flap. For cases with palatal defect only, we used the radial forearm flap. In palatomaxillary reconstruction, we can choose various free flap techniques according to the number of skin paddles and flap volume needed.

• Archives of Plastic Surgery
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• 제33권3호
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• pp.294-297
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• 2006

Lymphedema is one of the most common complications of mastectomy. It decreases quality of life and causes functional or aesthetical problems in post-mastectomy patients. Axillary lymph needs dissection (ALND), and radiation therapy(RTx) is known as the representative factor of lymphedema. Authors discovered that breast reconstructions using latissimus dorsi(LD) myocutaneous flap decrease the incidence of lymphedema in spite of these risk factors. Therefore we compared the incidence of lymphedema between the patients who underwent breast reconstructoins by LD pedicled flap, and the patients who did not undergo breast reconstructions from January 2002 to December 2004. Lymphedema was diagnosed when difference of arm circumference was over 2cm or limitation of joint movement was greater than 20 degrees. Overall incidence of lymphedema was 14.0%, and it was 18.9% in case of ALND, and 21.1% in case of RTx, respectively. But the incidence of breast-reconstructed patients using LD pedicled flap was 3.3%. This result reveals that LD pedicled flap decreases incidence of lymphedema significantly. In the future, it is recommended to identify the causes of decrease in the incidence of lymphedema in case of breast reconstructed by LD myocutaneous pedicled flap, for example lymphoscintigraphy and so on.

• Archives of Plastic Surgery
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• 제39권6호
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• pp.643-648
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• 2012

Background Aggressive treatment of sternoclavicular joint (SCJ) infection involves systemic antibiotics, surgical drainage and resection if indicated. The purpose of this paper is to describe a classification of post resectional SCJ defects and highlight our reconstructive algorithm. Defects were classified into A, where closure was possible often with the aid of topical negative pressure dressing; B, where parts of the manubrium, calvicular head, and first rib were excised; and C, where both clavicular, first ribs and most of the manubrium were resected. Methods Twelve patients (age range, 42 to 72 years) over the last 8 years underwent reconstruction after SCJ infection. There was 1 case of a type A defect, 10 type B defects, and 1 type C defect. Reconstruction was performed using the pectoralis major flap in 6 cases (50%), the latissimus dorsi flap in 4 cases (33%), secondary closure in 1 case and; the latissimus and the rectus flap in 1 case. Results All wounds healed uneventfully with no flap failure. Nine patients had good shoulder motion. Three patients with extensive clavicular resection had restricted shoulder abduction and were unable to abduct their arm past $90^{\circ}$. Internal and external rotation were not affected. Conclusions We highlight our reconstructive algorithm which is summarised as follows: for an isolated type B SCJ defect we recommend the ipsilateral pectoralis major muscle for closure. For a type C bilateral defect, we suggest the latissimum dorsi flap. In cases of extensive infection where the thoracoacromial and internal mammary vessels are thrombosed, the pectoralis major and rectus abdominus cannot be used; and the latissimus dorsi flap is chosen.

• Archives of Plastic Surgery
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• 제45권4호
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• pp.340-344
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• 2018

Background In performing extended latissimus dorsi (ELD) flap procedures, a skin paddle design on the bra line helps reduce visible scarring. This improves the patient's satisfaction with the outcome. However, such a design leads to a longer operation time and increased fatigue of the surgeon due to the narrow operative field. In this study, the authors propose a method that elongates the axillary incision line posteriorly by 1.5 cm from the lateral border of the latissimus dorsi muscle. We examined whether this method could shorten the operation time and compared the incidence of complications between patients who underwent this novel procedure and patients who underwent the traditional procedure. Methods In this study of patients who underwent ELD flap procedures for immediate breast reconstruction, 89 underwent surgery with the elongated axillary incision and 45 underwent surgery without the elongated incision. The total operation time and complications were retrospectively examined based on the patients' medical records, and we examined whether there was any statistically significant difference in the total operation time. Results In the experimental group with the elongated axillary incision, the operation time ranged from 125 to 255 minutes (median, 175 minutes). In contrast, in the control group without the elongated axillary incision, the operation time ranged from 142 and 340 minutes (median, 205 minutes). The operation time was statistically significantly different between the two groups, and no significant complications were observed in the experimental group. Conclusions Elongation of the axillary incision alone may shorten the operation time of the ELD flap procedure without causing additional complications.

• Archives of Plastic Surgery
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• 제34권3호
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• pp.346-351
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• 2007

Purpose: As a rare congenital anomaly, Poland's syndrome has been known to show hypoplasia in breast and nipple, absence of pectoralis major muscle, and aplasia or deformity of rib or costal cartilage which has been reported to be more common in male. However, most patients who are seeking operation are female patients having one-side deformity. In the field of plastic surgery, the major surgical indications could be asymmetric chest wall depression in man or breast hypoplasia in woman. There are many reconstruction options according to the degree of patient's deformity: a prosthetic implant, breast implant with or without tissue expander, latissimus dorsi musculocutaneous pedicled flap with or without implant and/or tissue expander, and free tissue transfer with or without tissue expander. Methods: The authors have treated 4 patients(2 male, 2 female) who had a diagnosis of Poland's syndrome. According to the degree of patient's deformity, all patients underwent correction of breast asymmetry and unilateral anterior thoracic hypoplasia with one-staged or two-staged reconstruction. Results: All patents were satisfied with the results and there occurred no specific complications. Conclusion: The authors propose the treatment plan for patient with Poland's syndrome, according to the degree of patient's deformity. In case of male patient with mild deformity, the prosthetic implant or latissimus dorsi musculocutaneous pedicled flap will simulate the missing pectoralis and improve the contour deformity. In case of female patient with moderate to severe breast asymmetry and upward displaced nipple areolar complex (NAC), NAC can be lowered with tissue expander, breast can be enlarged with autologous free flaps or latissimus dorsi musculocutaneous pedicled flap with implant.

• Archives of Plastic Surgery
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• 제34권3호
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• pp.336-341
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• 2007

Purpose: The most accepted method for the reanimation of a paralyzed face is the two-stage method that combines cross-face nerve grafting with free-muscle transfer. Although the results of reconstruction with this method are satisfactory, there is an excessive delay between the stages, which prolongs the period of rehabilitation. In order to overcome this drawback, a one- stage, neurovascular free-flap reconstruction method using free neurovascular muscle flaps is introduced. Methods: From 1994 to 2004, 35 patients with longstanding facial palsy were treated. Fifteen patients underwent the single-stage reconstruction with the latissimus dorsi muscle, and 20 patients underwent the two-stage reconstruction method with the gracilis muscle. We compared the long-term results of the two methods of reconstruction. The mean follow-up period was 28.7 months for one-stage reconstruction, and 35.2 months for the two-stage, respectively. Results: In the patient group of the single stage reconstruction, both mouth corner excursion and animation grade were markedly improved at the final postoperative visit. Moreover, the first muscle contraction occurred earlier in this group, than in the two-stage reconstruction group. However, four patients in the single stage group never achieved a first muscle contraction or mouth corner excursion. Conclusion: Facial palsy is a very challenging condition for cosmetic surgeons to deal with. Traditional methods for treatment of chronic facial palsy use a two-stage muscle flap which is time-consuming and burdensome to patients, many of whom are averse to waiting 8 to 12 months to complete the two stages. The one-stage reconstruction method described herein uses a latissimus dorsi free-flap and has demonstrated consistent positive outcomes in clinical assessments.

• Journal of Chest Surgery
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• 제29권2호
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• pp.239-243
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• 1996

역행성 호흡 운동을 방지 하고 종격동내의 구조물을 보호하는 흥곽의 기능을 고려해야 하기 때문에 흉벽 재건은 임상적으로 간단하지가 않다. 영남대 학교병원 흉부외과에서는 교통사고로 좌측 전흉부의 전층에 걸친 흉벽 결손을 가진 37세 남자 환자에게 흉벽 재건술을 시행하였다. 외상직후 변연 절제와 지혈을 위해 1차 응급 수술이 시행되었고, 수술후25일째 흉벽 재건을 위한 2차수술을 시행하였다. 흉벽재건에는 흉배동맥을 피판경으로한 광배근피판과 좌측 대퇴부로부터 피부이식이 이용되었다. 흉벽 재건 수술후 인공호흡기 보조없이 자가 호흡이 가능하였으며, 수술후 3개월에 시행한 폐기능 검사(FVC, FEV1.0)는 예측치의 80%로 나타났다. 광배근피판을 이용한 흉벽 재건의 수술후 경과는 생리학적, 해부학적 그리고 미학적으로도 만족할만 하였다.