Flap Repair Research Articles

Using an under-utilised rural hospital to reduce surgical waiting lists.

Objectives This study aimed to evaluate patient outcomes from a 12-month pilot program establishing specialist surgical services in a small rural (Modified Monash Model, MM4) hospital on the south coast of NSW. Methods Suitable patients for ambulatory surgery were selected based on strict anaesthetic, surgical and social criteria. Skills shortfalls among nursing staff, usually with emergency or inpatient experience, were addressed by appropriate re-training and in-service training in scrub, scout and anaesthetic duties. An anonymous post-operative patient survey was administered during the pilot program, which assessed patient experiences and outcomes. Of 162 patients undergoing surgery during the pilot, 50 consecutive participants completed the survey. Results Of the 161 procedures during the pilot program, 100 were performed under sedation and locoregional anaesthesia and 62 under general anaesthesia. Half (n = 86, 53.4%) were complex excisions of malignant skin lesions, and of these 63% also required either a skin graft or local flap repair. Survey respondents reported adequate information and pain relief upon discharge (n = 45, 96%) and 100% were satisfied with the care received. No respondents needed to see a doctor following discharge. There were no mortality events or major issues of morbidity during the study period or subsequently, no further overnight admissions or return to theatre and no re-presentations within 48 h of operating. Two superficial surgical site infections were reported. Conclusions There is merit in drawing on underutilised resources in small rural hospitals in support of initiatives to reduce surgical waitlists. Appropriate outpatient surgeries can be safely performed with high levels of patient satisfaction.

Muscle Flap Technique Safe for On-ECMO Congenital Diaphragmatic Hernia Repair

IntroductionProsthetic patches (patch) and muscle flaps (flap) are techniques used for repair of congenital diaphragmatic hernia (CDH) with a large defect unamenable to primary closure. We hypothesized that the flap technique for CDH repair while on extra-corporeal membrane oxygenation (on-ECMO) would have decreased bleeding complications compared to patch due to the hemostatic advantage of native tissue. MethodsA single-center retrospective comparative study of patients who underwent on-ECMO CDH repair between 2008 and 2022 was performed. ResultsFifty-two patients met inclusion criteria: 18 patch (34.6%) and 34 flap (65.4%). There was no difference in CDH severity between groups. On univariate analysis, reoperation for surgical bleeding was lower following flap repair compared to patch (23.5% vs 55.6%, respectively; p = 0.045), 48-h postoperative blood product transfusion was lower after flap repair (132 mL/kg vs 273.5 mL/kg patch; p = 0.006), and two-year survival was increased in the flap repair group compared to patch (53.1% vs 17.7%, respectively; p = 0.036). On multivariate analysis adjusting for CDH side, day on ECMO repaired, and day of life CDH repaired, flap repair was significantly associated with lower five-day postoperative packed red blood cell transfusion amount, improved survival to hospital discharge, and improved two-year survival. ConclusionsOur experience suggests that the muscle flap technique for on-ECMO CDH repair is associated with reduced bleeding complications compared to prosthetic patch repair, which may in part be responsible for the improved survival seen in the flap repair group. These results support the flap repair technique as a favored method for on-ECMO CDH repair. Level of EvidenceLevel III.

Anatomical and Physiological Changes Following Primary Palatoplasty Using "The Buccal Flap Approach".

The purpose of this study was to determine the anatomical differences among selected individuals with a cleft palate repaired using "The Buccal Flap Approach" during primary palatoplasty compared to aged-matched participants without cleft palate. Observational, prospective. Two regional hospitals. A total of 30 adult males consisting of 15 adults born with cleft palate who received the Double Opposing Z-Plasty plus Buccal Flaps (DOZP + BF) repair at the time of primary palatoplasty and no history of secondary speech surgery or orthognathic surgery and 15 adults without a history of cleft palate. All participants underwent MRI to visualize anatomy. Ten velopharyngeal and craniofacial anatomical measures. No statistically significant differences between groups were observed for velar thickness, velar length, pharyngeal depth, NSBa angle, SNB angle, or levator veli palatini length. Individuals with the DOZP + BF presented with a greater effective velar length (p < .001), greater effective VP ratio (p < .001), smaller SNA angle (p < .001), and smaller maximal velar stretch (p < .001) compared to the control participants. This study suggests that adult males who received the DOZP + BF repair at the time of primary palatoplasty and no history of secondary speech surgery or orthognathic surgery present with a longer effective velar length and larger effective VP ratio in comparison to the non-cleft group. Future research is needed to compare patients with and without favorable outcomes from multiple surgical types to fully understand how surgical techniques alter the anatomy.

Surgical Management of Oro-Facial Clefts at a Tertiary Care Hospital in a Resource-Limited Setting: A Tanzanian Experience

Background: Orofacial clefts are the most common craniofacial anomalies in most parts of the world and its management remains a challenge to otorhinolaryngology, plastic/reconstructive, oral and maxillofacial surgeons practicing in resource limited countries. There is limited data on surgical management of these birth defects in Tanzania and Bugando Medical Centre (BMC) in particular. This study aimed to describe our own experience regarding the surgical management of orofacial clefts at BMC, a tertiary care hospital in Tanzania. Methods: This was a cross sectional study involving all children with orofacial clefts that were treated at BMC between February 2019 and June 2019. Results: A total of 98 patients with orofacial clefts were recruited. Males outnumbered males by a male to female ratio of 1.7:1. The majority of patients (64.3%) were within 12 months at presentation. The median ages at surgery in patients with cleft lip and those with cleft palate were 3 [IQR, 2 to 8] and 11(IQR, 7 to 18) months, respectively. Orofacial clefts in association with congenital anomalies were recorded in 5(5.1%) patients. More than half of patients (55.1%) had combined cleft lip and palate. Unilateral clefts, 77(78.5%) were more common and showed left side preponderance in 52(53.1%) patients. All patients underwent cleft surgery under general anesthesia. Millard rotation advancement flap repair and von-Langenbeck were the most common techniques of cleft lip and palate repair performed in 42(52.5%) and 30 (41.7%) patients, respectively. The overall complication rate was 14.3% and the most common postoperative complications were bleeding, palatal fistula, wound dehiscence and surgical site infections in 6(31.6%), 4(21.1%) and 3(15.8%) each respectively. No death was recorded in this study. Among the 98 patients operated, 79 were treated successfully giving an overall success rate of 80.6%. The success rate was significantly influenced by nutrition status (p= 0.010), co-existing con

Anatomic study and clinical application of iliac crest chimeric tissue flap

To conduct anatomical study on the iliac crest chimeric tissue flap and summarize its effectiveness of clinical application in repairing limb wounds. Latex perfusion and anatomical study were performed on 6 fresh adult cadaver specimens with 12 sides, to observe the initial location, distribution, quantity, and direction of the common circumflexa iliac artery, the deep circumflexa iliac artery, and the superficial circumflexa iliac artery, and to measure their initial external diameter. Between December 2020 and September 2022, the iliac crest chimeric tissue flap repair was performed on 5 patients with soft tissue of limbs and bone defects. There were 3 males and 2 females, with an average age of 46 years (range, 23-60 years). Among them, there were 3 cases of radii and skin soft tissue defects and 2 cases of tibia and skin soft tissue defects. The length of bone defects was 4-8 cm and the area of skin soft tissue defects ranged from 9 cm×5 cm to 15 cm×6 cm. The length of the iliac flap was 4-8 cm and the area of skin flap ranged from 12.0 cm×5.5 cm to 16.0 cm×8.0 cm. The donor sites were directly sutured. Anatomical studies showed that there were 10 common circumflex iliac arteries in 5 specimens, which originated from the lateral or posterolateral side of the transition between the external iliac artery and the femoral artery, with a length of 1.2-1.6 cm and an initial external diameter of 0.8-1.4 mm. In 1 specimen without common circumflexa iliac artery, the superficial and deep circumflex iliac arteries originated from the external iliac artery and the femoral artery, respectively, while the rest originated from the common circumflex iliac artery. The length of superficial circumflex iliac artery was 4.6-6.7 cm, and the initial external diameter was 0.4-0.8 mm. There were 3-6 perforator vessels along the way. The length of deep circumflex iliac artery was 7.8-9.2 cm, and the initial external diameter was 0.5-0.7 mm. There were 3-5 muscular branches, 4-6 periosteal branches, and 2-3 musculocutaneous branches along the way. Based on the anatomical observation results, all iliac crest chimeric tissue flaps were successfully resected and survived after operation. The wounds at recipient and donor sites healed by first intention. All patients were followed up 8-24 months, with an average of 12 months. The tissue flap has good appearance and soft texture. X-ray film reexamination showed that all the osteotomy healed, and no obvious bone resorption was observed during follow-up. The common circumflex iliac artery, deep circumflex iliac artery, and superficial circumflex iliac artery were anatomically constant, and it was safe and reliable to use iliac crest chimeric tissue flap in repairing the soft tissue and bone defects of limbs.

The Impact of the Nasal Mucosal Flap on Tissue Remodeling After Sinus Bone Drilling in Rabbit Models.

Frontal sinus surgery remained a challenge of restenosis or obliteration of the drainage pathway caused by the scarring and neo-osteogenesis after mucosal stripping and bone drill-out. The pedicled or free nasal mucosal flap is typically used to repair the exposed bone surface to avoid or reduce recurrence. This study aimed to explore the histopathological mechanism of mucosal flaps repairing bare bone after mucosal resection and bone drill-out in the rabbit model. Thirty New Zealand white rabbits were used. Sixteen rabbits were selected as the experimental group, and Staphylococcus aureus was used to establish the CRS model (CRS group). Fourteen healthy rabbits were allocated to the control group (NCRS group). Each group was divided into two subgroups with or without mucosal flap repair (CRS-FLAP, CRS-NFLAP, NCRS-FLAP, and NCRS-NFLAP, respectively). The bony anterior and lateral walls of the maxillary sinus of each rabbit were abraded by the drill. The bare bone was then covered with a flap in FLAP subgroups. Bone remodeling and mucosal morphological changes were observed and compared by histopathological hematoxylin and eosin and Masson staining. In the CRS-NFLAP subgroup, the regenerated epithelium lacked typical structure, accompanied by numerous inflammatory cell infiltration and collagen deposition. Conversely, the inflammatory reaction was mild in the CRS-FLAP subgroup, and there was less collagen deposition. The restored mucosal structure was like the normal mucosa. The epithelium in the NCRS-NFLAP subgroup was partially exfoliated, with few cilia, goblet cells, and glandular structures. Compared with the NCRS-NFLAP subgroup, the CRS-NFLAP subgroup showed significant bone remodeling with enhanced activity of osteoblast and osteoclast cells. Pedicled mucosal flap repair could significantly reduce local mucosal and bone remodeling in a rabbit model of CRS.

Visual analysis of the current research status and hotspots of electric burns at home and abroad

Objective: To analyze the literature on electric burns published at home and abroad, and to explore the research hotspots and frontiers of electric burns. Methods: The bibliometric method was used. The Chinese and English literature related to electric burns published in China National Knowledge Infrastructure, Wanfang database, VIP database and the core collection of Web of Science database from January 1, 2013 to December 31, 2022 were searched respectively, and the CiteSpace 6.2.R2 software was used for analysis. The number of papers, authors, countries, and institutions of Chinese and English literature were counted respectively, and the co-occurrence analysis of keywords and mutation analysis and cluster analysis on the basis of the co-occurrence analysis were conducted, besides, the clustering time line figure was obtained after the keywords were sorted by time to explore the current research status and the evolution process of hotspots in the field of electric burns. Results: A total of 398 English papers were retrieved from the core collection of Web of Science database, and a total of 523 Chinese papers were retrieved from China National Knowledge Infrastructure, Wanfang database, and VIP database after duplicate check. From 2013 to 2022, the number of English literature published in the field of electric burns showed a steadily upward trend, and the number of published Chinese literature showed a downward trend and tended to be stable. In Chinese literature, a total of 302 authors as the first author published papers related to electric burns, with 17 core authors published ≥3 papers; in English literature, a total of 320 authors as the first author published papers related to electric burns. Researches on electric burns were carried out in 65 countries, with United States having the most cooperation with other countries and the largest number of papers published. A total of 512 institutions at home and abroad published papers related to electric burns, and the institutions with the largest number of Chinese and English papers were Shanghai Electric Power Hospital in China (n=14) and Hallym University in Korea (n=11), respectively. A total of 1 176 Chinese keywords and 1 068 English keywords were included for co-occurrence analysis after excluding keywords related to the searching words. The top three keywords in frequency in Chinese literature were surgical flap, wound repair, and nursing, and the top three keywords in frequency in English literature were management, epidemiology, and children. Ten clusters were obtained by keyword analysis in Chinese literature, and the largest cluster was wound healing, followed by clinical effects and surgical flaps. Seven clusters were obtained by keyword analysis in English literature, and the largest cluster was reconstructive surgical procedures, followed by chronic pain and shock. The persistent clusters in Chinese literature were wound healing and clinical outcomes, etc., and the prominent nodes in the recent two years were surgical timing, limb electric burns, and hypertrophic scars; the persistent clusters in English literature were reconstructive surgical procedures and chronic pain, etc., and the prominent nodes in the recent two years were predictors and burn management, etc. In Chinese literature, the keyword with the longest duration of mutation (2017-2021) was wrist electric burns, and the keyword with the highest intensity of mutation was flap repair; in English literature, the keyword with the longest duration of the mutation (2019-2022) was voltage, and the keyword with the highest intensity of mutation was prevention. Conclusions: There are similarities and differences in the research directions and hotspots of electric burns at home and abroad. Surgical flap repair is a common research hotspot at home and abroad. At present, domestic research focuses on wound healing, wrist electric burns, and other aspects, while international research focuses on treatment management, epidemiology, reconstruction, and other aspects.

Selection strategy of pedicled axial flaps for repairing high-voltage electric burn wounds in foot and ankle

Objective: To explore the selection strategy of pedicled axial flaps for repairing high-voltage electric burn wounds in foot and ankle. Methods: The retrospective observational research method was used. From January 2017 to December 2022, 16 patients with skin and soft tissue defects in foot and ankle after high-voltage electric burns were treated in General Hospital of Eastern Theater Command, including 11 cases of unilateral defect and 5 cases of bilateral defect. All patients were male, aged from 25 to 75 years. After thorough debridement, the area of the defect to be repaired with the flap was 5.0 cm×4.0 cm to 12.0 cm×8.0 cm. Before operation, the color Doppler ultrasound, computed tomography angiography, or digital subtraction angiography was used to fully evaluate the degree of vascular injury in the affected limb and to identify the distribution and traffic anastomosis of vascular network. Pedicled axial flaps with reliable blood supply were used to repair the wounds as soon as possible, and the area of flaps ranged from 3.0 cm×2.0 cm to 13.0 cm×8.0 cm. The wound in the donor area of flaps was repaired with split-thickness skin graft from head or medium-thickness skin graft from thigh. The flap repair of wounds in various areas of the ankle and foot was recorded. The postoperative survivals of the flaps and skin grafts were observed after surgery. The postoperative appearance of flaps and walking function of patients were followed up. At the last follow-up, the foot and ankle function was evaluated and rated using the American Association of Foot and Ankle Surgeons Ankle Posterior Foot Scoring System. Results: Two wounds in toe area were repaired with reverse dorsal pedis flaps, 3 wounds in medial ankle area and 2 wounds in heel area were repaired with medial plantar flaps, 2 wounds in anterior plantar area combined with toe area were repaired with reverse medial plantar flaps, 2 wounds in anterior plantar area combined with toe area and 5 wounds in anterior plantar area were repaired with reverse medial pedis flaps, 1 wound in toe area was combined with proper plantar digital artery flap, 1 dorsal pedis wound and 1 lateral malleolus wound were repaired with lateral supramalleolar perforator flaps, and 1 lateral malleolus wound and 1 dorsal pedis wound were repaired with sural neurovascular flap. One flap had venous reflux disorder after surgery and survived after treatment, while the other flaps and skin grafts survived completely after surgery. During the follow-up of 6 to 24 months after operation, the appearance of the flaps was good, and the walking function of patients was normal. At the last follow-up, the functional score of foot and ankle was 76 to 95, which was evaluated as excellent in 11 cases and good in 5 cases. Conclusions: According to the condition of high-voltage electric burn in foot and ankle, early and thorough debridement, preoperative imaging examination to evaluate blood vessels of the affected limb, and selection of pedicled axial flap with reliable blood supply are good methods for wound repair and related functional reconstruction of high-voltage electric burn in foot and ankle.

Abdominal function and appearance of patients after repairing the extensive skin and soft tissue defects in the limbs with two types of lower abdominal tissue flaps

Objective: To study the abdominal function and appearance of patients after repairing the extensive skin and soft tissue defects in the limbs with two types of lower abdominal tissue flaps. Methods: A retrospective clinical controlled study was conducted. From June 2016 to October 2022, 17 patients with extensive skin and soft tissue defects in the limbs who met the inclusion criteria were admitted to the Department of Bone Hand Microsurgery of Shandong Wendeng Orthopedic Hospital, including 2 males and 15 females, aged 21-60 years, with a defect ranging from 15.0 cm×10.0 cm to 23.0 cm×15.0 cm. According to the applied repair method, the patients were divided into deep inferior epigastric perforator (DIEP) flap group (9 cases) with the defect wound being repaired by the DIEP flap and muscle sparing transverse rectus abdominis myocutaneous (MS-TRAM) flap group (8 cases) with the defect wound being repaired by the MS-TRAM flap. On post surgery day (PSD) 1, 3, 5, 7, and 14, the blood supply of the tissue flaps was evaluated using a self-made tissue flap blood supply evaluation scale. At 12 months after surgery, the patients' satisfaction with the efficacy of tissue flap repair was evaluated using the satisfaction score standard for flap efficacy. Before surgery and at 3 and 12 months after surgery, a self-made abdominal wall strength evaluation scale was used to evaluate the strength of abdominal wall. At 12 months after surgery, a self-made abdominal appearance evaluation scale was used to evaluate the condition of abdominal scars, degree of abdominal symmetry, the appearance and restoration of umbilicus, abdominal protrusion during dressing, and formation of folds on both sides of the abdomen. Data were statistically analyzed with analysis of variance for repeated measurement, independent sample t test, paired sample t test, and Fisher's exact probability test. Results: On PSD 1, 3, 5, 7, and 14, there was no significant change in the blood supply score of tissue flaps of patients in the two groups, and there was no statistically significant difference between the two groups (P>0.05). At 12 months after surgery, the satisfaction ratio of patients in DIEP flap group with tissue flap repair efficacy was 8/9, which was close to 7/8 in MS-TRAM flap group (P>0.05). The preoperative abdominal wall strength of patients between the two groups was similar (P>0.05), while the abdominal wall strength of patients in DIEP flap group was significantly stronger than that in MS-TRAM flap group at 3 and 12 months after surgery (with t values of 3.09 and 3.02, respectively, P<0.05). Compared with the preoperative strength within each group, the abdominal wall strength of patients in DIEP flap group at 3 months after surgery and in MS-TRAM flap group at 3 and 12 months after surgery decreased significantly (with t values of 6.04, 9.71, and 2.91, respectively, P<0.05), which did not change significantly in DIEP flap group at 12 months after surgery (P>0.05). At 12 months after surgery, the scores of abdominal scars, degree of abdominal symmetry, the appearance and restoration of umbilicus, abdominal protrusion during dressing, and formation of folds on both sides of the abdomen of patients were similar between the two groups (P>0.05). Conclusions: Free transplantation of DIEP flap and MS-TRAM flap to repair the extensive skin and soft tissue defects in the limbs can achieve good repair results, including good blood supply of tissue flap and abdominal shape, and the patients' high degree of satisfaction with the efficacy of tissue flap repair. However, DIEP flap is superior to MS-TRAM flap in terms of long-term postoperative abdominal wall strength recovery, showing a broader prospect of application.

Double Limberg Flap for Stage IV Sacral Decubitus Ulcers with Compression Fracture of the First Vertebra of Lumbar Spine: A Case Report

Background: Decubitus ulcers are injuries to skin and underlying tissue resulting from prolonged pressure on the skin. There are numbers of surgical methods have been devised over a year for treatment of decubitus ulcers. Double Limberg flap is our procedure of choice, which we present here as our experience. Case presentation: The study describe a 29 years old male with chief complaint is unable to move both limbs. One month before admission the patient admitted that he had been hit by the roof of the chicken coop while cleaning it. After the incident, the patient wan unable to move his legs. The patient also admitted that he was unable to control his urination and bowel movements. The patient also complained that there were ulcers in the buttocks that were caused by being in bed for a long time. At Dr. Mohammad Hoesin General Hospital, the patient is planned to undergo posterior stabilization. After the posterior stabilization is carried out, this patient was planned to have the ulcer closure using a Limberg flap. The double limber flap survived completely. Flap necrosis was not seen in this case. The largest defect covered by this flap. There was no recurrence of pressure sores in this patient in the 6 month follow-up period. Conclusion: The Limberg flap is a fast, accurate and reliable alternative surgical technique utilizing local tissue in treating sacral decubitus ulcer. Limberg flap repair is an effective technique with short learning curve, patient comfort, early healing, and least complications and recurrence rates are the advantages of this procedure.

Commentary on "Tranexamic Acid Prevention of Hemorrhagic Complications After Interpolated Flap Repair: A Single-Center Retrospective Cohort Study".

Commentary on "Tranexamic Acid Prevention of Hemorrhagic Complications After Interpolated Flap Repair: A Single-Center Retrospective Cohort Study".

Vascular neovascularization and post-traumatic stress intervention of perforator flap obstruction in diabetic patients

BackgroundDiabetic patients often suffer from neovascularization during branch flap repair, and the process of formation of these neo-vessels and post-traumatic stress intervention have not been adequately studied.Subjects and MethodsFifty diabetic patients were selected for this study and divided into an experimental group and a control group. The experimental group received post-traumatic stress intervention treatment, while the control group received conventional treatment. Choke vessels were counted and observed by collecting tissue samples from the study subjects using histological methods.ResultsData analysis software SPSS 23.0 was used for statistical analysis of data. A significant reduction in the number of Choke vessels was observed in the experimental group as compared to the control group (the mean number of Choke vessels was 10.2 in the experimental group and 17.8 in the control group, P&lt;0.05). In addition, the blood glucose level of the experimental group was significantly decreased (the average blood glucose level of the experimental group was 8.6 mmol/L and the average blood glucose level of the control group was 11.4 mmol/L, P&lt;0.01).ConclusionsPost-traumatic stress intervention can significantly reduce the number of Choke vessels and thus improve the results of perforator flap repair. It provides useful guidance for the surgical treatment of diabetic patients and provides an important theoretical basis for clinical practice.AcknowledgementThe research is supported by: the Hainan Provincial Natural Science Foundation of China (No. 821RC1064).

Clinical study of endoscopic surgery for recurrent nasopharyngeal carcinoma

Objective:To compare the clinical effects and complications of surgery + chemotherapy and radiotherapy + chemotherapy in patients with nasopharyngeal carcinoma recurrence, so as to compare the safety and efficacy of two different therapeutic methods. Methods:A retrospective analysis was performed on 40 patients with recurrent nasopharyngeal carcinoma after radiotherapy and chemotherapy admitted to our hospital from January 2016 to June 2020. Among them, 26 patients were treated with surgery. The recurrent tumor was removed under nasal endoscope, and the frozen resection margin was negative during the operation. Chemotherapy was continued for stage Ⅲ and Ⅳ patients from 3 to 5 weeks after surgery. Fourteen patients received secondary radiotherapy and chemotherapy. Postoperative complications and survival rate were observed. Results:There were 14 patients in the secondary chemoradiotherapy group（control group） and 26 patients in the nasal endoscopic surgery group（observation group）. Among the 26 patients, 19 patients underwent nasal septal mucosal repair, 5 patients underwent temporal muscle flap repair, 2 patients underwent submental flap repair, 2 patients had nasal septal mucosal flap necrosis and cerebrospinal fluid leakage, and the temporal muscle flap was used for secondary repair in the second stage operation, and 8 patients needed cervical lymph node dissection. The patients recovered well after surgery, and the patients in stage Ⅲ and Ⅳ were treated with chemotherapy after 3 weeks to 5 weeks according to the patient's wound condition. There were significant differences in the incidence of complications and 1-, 2-, and 3-year survival rates between the two groups（P<0.05）. Conclusion:Patients with recurrent nasopharyngeal carcinoma can be treated by nasal endoscopic surgery to remove the tumor, and the use of pedicled nasal septal mucosal flap or temporal muscle flap for skull base reconstruction, The operation can effectively prevent major complications such as internal carotid artery rupture and hemorrhage, and improve the survival rate and quality of life of patients. It provides a safe and effective treatment for patients with recurrent nasopharyngeal carcinoma.

Long-term outcome of local muscles transposition for the functional restoration of large upper or lower lip defects

Background Although more than 200 techniques have been reported for the reconstruction of their and lower lip defects since 1000 BC, none of them is ideal. Local flaps come at the expense of extra skin scarring and, in some cases, the surgeon may be confronted with the lack of sufficient tissues for the reconstruction of large defects. It has been reported that several methods exist for performing near-total lip reconstruction. Currently, free micro-vascular tissue transfer and local flap repair (the Bernard von Burrow-Webster method) are the two most prominent methods. Aim To evaluate the functional results of using local muscles transposition-assisted dermal fat flap and muco-buccal flap to treat upper or lower lip defects. Patients and methods This study was carried out on 128 patients, who presented to us with malignant tumors affecting the lips. Results Lip defect sizes ranged from four to 6 cm in length. There was no evidence of flap failure, and the aesthetic and functional outcomes are very well. All patients healed successfully, and 100% of the flaps survived. No cases of microstomia were reported. Conclusion The use of local muscle transposition, assisted with dermal fat flap and muco-buccal flap technique, showed excellent results in regaining, oral competence, and lip mobility, and as much as possible, increasing the aesthetic outcome.

Repair of Surgical Defect by Pectoralis Major Flap Versus Free Radial Forearm Flap in Buccal Carcinoma: Assessment of Quality of Life

Background: Soft tissue reconstruction of the oral cavity is the most critical factor in achieving a successful functional result. Malignant lesions occurring in the buccal area are usually treated with primary surgical and/or radiotherapy of the head and neck region. Depending on the location and size of the buccal tumor, radical surgical treatment often affects all oral function such as speech, swallowing, chewing, oral rehabilitation, nutrition and appearance. To maximize postoperative function, flap repair is currently the preferred method for reconstruction of buccal defects after major surgery. Among the flaps most commonly used are pedicle pectoralis major myocutaneous flap and the free radial forearm fasciocutaneous flap. The choice of the best reconstructive option is still controversial. Objective: To find out the quality of life after repair of surgical defect by pectoralis major flap versus free radial forearm flap in buccal carcinoma. Methods: This prospective study was conducted in the department Otolaryngology- Head &amp; Neck Surgery, Bangabandhu Sheikh Mujib Medical University, Dhaka from September 2017 to August 2019. A total number of 44 cases of buccal carcinoma patient who had the inclusion criteria were enrolled as a study sample. These subjects were selected from the Department of Otolaryngology-Head &amp; Neck Surgery, Department of Oral &amp; Maxillofacial Surgery, Bangabandhu Sheikh Mujib Medical University, Shahbag, National Institute of ENT, Tejgaon, Dhaka. Comparison of nominal or ordinal variables between patients who have undergone surgery with either the RFFF or PMMF were analyzed using a chi-square test. The UW-QOL scores were compared for each domain using the nonparametric Mann-Whitney test. P-value &lt; .05 was accepted as the level of significance. Results: In this study 40 out of 44 patients were completed UW-QOL questionnaires. The median age was 52 (range 40-65years), the male-female ratio was 1.44:1. All were habituated in either smoking or betel leaf/ nut or alcohol. Most of them were illiterate to the primary level of education and suffering from stage- iii tumor. All these variables were statistically insignificant except gender. Patients reconstructed with RFFF felt better in shoulder domains than PMMF but felt worse appearance domains and these were statistically significant in both 3 months and 6 months postoperatively. Conclusion: The study result had shown that reconstruction of the defect after buccal cancer resection using either RFFF or PMMF significantly influences patient’s quality of life. This study will provide valuable information for surgeons who will decide reconstruction modalities for buccal cancer and also will help the patients getting a better outcome. Bangladesh J Otorhinolaryngol 2023; 29(1): 32-38

Tranexamic Acid Prevention of Hemorrhagic Complications Following Interpolated Flap Repair: A Single-Center, Retrospective, Cohort Study.

Tranexamic acid (TXA) is increasingly being used to prevent hemorrhagic complications after dermatologic surgery. Interpolated flap repairs following Mohs micrographic surgery are at risk for increased bleeding events and unplanned health care utilization, particularly among patients on antithrombotic medication. To assess bleeding events after interpolated flap repair in patients receiving TXA compared with those who did not. A retrospective review identified interpolated flap repairs in a 5-year period. Hemorrhagic complications were analyzed, defined as major bleeding events, which included all unplanned medical visits, and minor bleeding events, which included any unplanned patient phone calls or messages through electronic medical record. One hundred fifteen patients had interpolated flap repair during the 5-year period, of which 21 (18.3%) received TXA postprocedure. Twenty-seven bleeding events were identified in the non-TXA group compared with 1 event in the TXA-treated group. Patients who received TXA were less likely to have had a bleeding event (28.7% vs 4.8%, p < .01). Patients undergoing interpolation flap repair were less likely to experience a bleeding event after subcutaneous injection of TXA.

The potential role of mechanotransduction in the management of pediatric calvarial bone flap repair.

Pediatric patients suffering traumatic brain injuries may require a decompressive craniectomy to accommodate brain swelling by removing a portion of the skull. Once the brain swelling subsides, the preserved calvarial bone flap is ideally replaced as an autograft during a cranioplasty to restore protection of the brain, as it can reintegrate and grow with the patient during immature skeletal development. However, pediatric patients exhibit a high prevalence of calvarial bone flap resorption post-cranioplasty, causing functional and cosmetic morbidity. This review examines possible solutions for mitigating pediatric calvarial bone flap resorption by delineating methods of stimulating mechanosensitive cell populations with mechanical forces. Mechanotransduction plays a critical role in three main cell types involved with calvarial bone repair, including mesenchymal stem cells, osteoblasts, and dural cells, through mechanisms that could be exploited to promote osteogenesis. In particular, physiologically relevant mechanical forces, including substrate deformation, external forces, and ultrasound, can be used as tools to stimulate bone repair in both in vitro and in vivo systems. Ultimately, combating pediatric calvarial flap resorption may require a combinatorial approach using both cell therapy and bioengineering strategies.

Posterior Ear Canal Reconstruction by Autologous Cartilage and Flaps in One Stage

Background: Reconstruction of the posterior canal wall should be planned by the surgeon in canal wall down mastoidectomy to prevent the resulting cavity that is prone to recurrent infection. The surgeon should choose the type of grafts either autologous, homologous or allografts. Furthermore, the surgeon should decide whether to do immediate reconstruction or delayed one. Methods: In this study, the ridge was reconstructed at the same time of mastoidectomy by autologous tissues. We used conchal cartilage graft vascularized by pedicled perichondrial and periosteal flaps. The study included 48 patients (32 males and 16 females) with age ranged from 18-55 years. All patients were with unilateral chronic suppurative otitis media with persistent discharge. They had been operated at our tertiary hospital between Jan. 2012 to march 2014 Results: Successful reconstruction was obtained in all cases with no dehiscence, necrosis or canal stenosis Conclusion: The use of composite conchal cartilage with perichondrial and periosteal flaps in repair of the ridge is highly efficient. The presenting study recommends doing this repair at the same operative time concomitantly with canal wall down mastoidectomy Keywords: Mastoidectomy, Cholesteatoma, Cartilage graft, Perichondrium, Periosteum, flaps.

Establishment of a Three-Dimensional Finite Element Model and Mechanical Analysis of the Upper Lip Flap With Secondary Cleft Lip Deformity.

Cleft lip secondary deformity is a common oral and maxillofacial deformity, usually accompanied by the upper lip and nasal cleft. The main treatment method for cleft lip secondary deformity is surgical repair. Among them, upper lip flap repair is a common method; the principle is to transplant the healthy tissue to the lesion site to achieve the purpose of repair. However, during the surgical process, each key point's stress distribution and strain conditions are quite different. Therefore, special attention should be paid to the mechanical properties of each key point during the repair operation to ensure the surgical effect. This paper aims to establish a 3-dimensional finite element model and perform finite element analysis to simulate the mechanical properties and key point displacement of the upper lip flap repair operation for cleft lip secondary deformity to improve the operation's success rate and safety.

Prospective study on the influence of dobutamine on blood perfusion in free flap repair of diabetic foot wounds

Objective: To investigate the influence of clinical administration of dobutamine on blood perfusion in free flap repair of diabetic foot wounds. Methods: A prospective self-controlled study was conducted. From January to November 2022, 20 patients with diabetic foot who met the inclusion criteria were hospitalized in the Department of Burns and Plastic Surgery of Affiliated Hospital of Zunyi Medical University, including 9 males and 11 females, aged from 44 to 75 years, with the foot wounds area ranging from 5 cm×4 cm to 20 cm×10 cm, which were repaired by free anterolateral thigh flaps. Heart rate (HR) and mean arterial pressure (MAP) were recorded before anesthesia induction, 10 minutes after vascular recanalization, when the target blood pressure (i.e., MAP being 6-10 mmHg (1 mmHg=0.133 kPa) higher than that before anesthesia induction) was reached after infusion of dobutamine, and 10 minutes after tracheal catheter removal. Additionally, indocyanine green, a contrast agent, was injected intravenously at 10 minutes after vascular recanalization and when the target blood pressure was reached after infusion of dobutamine to assess flap blood perfusion using infrared imager, and the area ratio of flaps with hyperperfusion and hypoperfusion was calculated. Other recorded variables included flap harvesting area, surgical duration, total fluid infusion amount, infusion dose and total usage of dobutamine, intraoperative adverse events, postoperative flap complications, and follow-up outcomes. Data were statistically analyzed with paired sample t test, analysis of variance for repeated measurement, Bonferroni method, and generalized estimating equation. Results: Compared with those before anesthesia induction, HR and MAP of patients were significantly decreased at 10 minutes after vascular recanalization (P<0.05), while HR and MAP of patients were significantly increased when the target blood pressure was reached after infusion of dobutamine (P<0.05). Compared with those at 10 minutes after vascular recanalization, HR and MAP of patients were significantly increased when the target blood pressure was reached after infusion of dobutamine and at 10 minutes after tracheal catheter removal (P<0.05). Compared with those when the target blood pressure was reached after infusion of dobutamine, HR and MAP of patients were significantly decreased at 10 minutes after tracheal catheter removal (P<0.05). The area ratio of flaps with hyperperfusion of patients was 0.63±0.11 when the target blood pressure was reached after infusion of dobutamine, which was significantly higher than 0.31±0.09 at 10 minutes after vascular recanalization (t=-9.92, P<0.05). The area ratio of flaps with hypoperfusion of patients was 0.12±0.05 when the target blood pressure was reached after infusion of dobutamine, which was significantly lower than 0.45±0.10 at 10 minutes after vascular recanalization (t=17.05, P<0.05). The flap harvesting area of patients was (174±35) cm², the surgical duration was (372±52) min, the total fluid infusion amount was (2 485±361) mL, the infusion dose of dobutamine was 3-13 μg·kg⁻¹·min⁻¹, and the total usage of dobutamine was 5.7 (2.1, 9.7) mg. Two patients showed a significant increase in MAP during the infusion of dobutamine compared with that at 10 minutes after vascular recanalization, but before reaching 6 mmHg higher than that before anesthesia induction, their HR had reached the maximum (over 130 beats/min). The HR gradually returned to around 90 beats/min after the infusion of dobutamine was stopped. On post operation day 2, one patient had partial necrosis at the distal part of the flap, which was repaired by transplantation of thin split-thickness skin graft from the opposite thigh. During the follow-up of 3 to 6 months after operation, all the flaps survived well, with soft texture and well-formed shape, and no adverse cardiovascular events of patients were reported. Conclusions: The administration of dobutamine in free flap repair of diabetic foot wounds can significantly improve the MAP of patients, expand the area of hyperperfusion, reduce the area of hypoperfusion, and enhance the flap viability, with promising short-term follow-up results, which is suitable for promotion in clinical applications.