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The use of component separation technique (CST) in complex abdominal wall reconstruction (AWR) increases the rate of primary musculofascial closure but can be associated with increased wound complications, which may require readmission. This study examines 3-year trends in readmissions for patients undergoing AWR with or without CST.The Nationwide Readmissions Database was queried for patients undergoing elective AWR from 2016-2018. CST, demographic characteristics, and 90-day complications and readmissions were determined. CST versus non-CST readmissions were compared, including matched subgroups. Standard statistics and logistic regression were used.Over the 3-year period, 94,784 patients underwent AWR. There was an annual increase in the prevalence of CST: 4.0% in 2016; 6.1% in 2017; 6.7% in 2018 (P.01), which is a 67.5% upsurge during that time. Most cases (82.3%) occurred at urban teaching hospitals, which had more comorbid patients (P .01). The yearly 90-day readmission rate did not change: 16.0%, 18.2%, and 16.9% (P = .26). Readmissions were higher for CST patients than non-CST patients (17.1% vs 15.7%), but not in the matched subgroup (17.0% vs 16.4%; P = .41). Most commonly, readmissions were for infection (28.3%); 14.3% of readmitted patients underwent reoperation. Smoking, morbid obesity, diabetes, chronic lung disease, urban-teaching hospital status, and increased length of stay increased the chance of readmission (all P.05).From 2016 to 2018, the use of CST increased 67.5% nationwide without an increase in readmissions. As we look toward clinical targets to reduce risk of readmission, modifiable health conditions, such as smoking, morbid obesity, and diabetes should be targeted during the prehabilitation process.

Background Component separation techniques have recently gained popularity for the repair of complex ventral hernias. Anterior and posterior component separation techniques offer similar myofascial medialization, with a differing complication profile. The aim of this study is to compare the efficacy, patient morbidity and post-operative complications between anterior component separation (ACST) and transversus abdominis release (TAR) for large ventral hernias. Methods Between December 2017 and September 2019, data was collected and analysed for patients undergoing ACST and TAR, in terms of demographics, peri-operative events, adverse events and hernia recurrence. Results 25 patients each underwent ACST and TAR during our study period. Mean age was 53.5 and 52.8 years and mean BMI was 31.4 and 29.5 respectively. The mean defect area was 120.8 cm2 and 131.9 cm2, and average mesh size was 741.8 cm2 and 1429.04 cm2 respectively in the ACST and TAR groups. Four patients undergoing TAR had intra-operative complications with none in the ACST group. In the ACST group, 8 patients had an SSI, of which 5 patients needed operative intervention, while 3 patients in the TAR group had an SSI, all of whom were managed with bedside procedures. One patient in the ACST group had a recurrence. None of the patients in the TAR group had a recurrence. Conclusions Component separation techniques are gaining popularity in treatment of large ventral hernias. While they have comparable outcomes with respect to recurrence, wound morbidity is more frequent and severe in the ACST group.

Background To obtain tension-free closure for giant incisional hernia repair, anterior or posterior component separation is often performed. In patients with an extreme diameter hernia, anterior component separation and posterior component separation may be combined. The aim of this study was to assess the additional medialization after simultaneous anterior component separation and posterior component separation. Methods Fresh-frozen post mortem human specimens were used. Both sides of the abdominal wall were subjected to retro-rectus dissection (Rives-Stoppa), anterior component separation and posterior component separation, the order in which the component separation techniques were performed was reversed for the contralateral side. Medialization was measured at 3 reference points. Results Anterior component separation provided most medialization for the anterior rectus sheath, posterior component separation provided most medialization for the posterior rectus sheath. After combined component separation techniques total median medialization ranged between 5.8 and 9.2 cm for the anterior rectus sheath, and between 10.1 and 14.2 cm for the posterior rectus sheath (depending on the level on the abdomen). For the anterior rectus sheath, additional posterior component separation after anterior component separation provided 15% to 16%, and additional anterior component separation after posterior component separation provided 32% to 38% of the total medialization after combined component separation techniques. For the posterior rectus sheath, additional posterior component separation after anterior component separation provided 50% to 59%, and additional anterior component separation after posterior component separation provided 11% to 17% of the total medialization after combined component separation techniques. Retro-rectus dissection alone contributed up to 41% of maximum obtainable medialization. Conclusion Anterior component separation provided most medialization of the anterior rectus sheath and posterior component separation provided most medialization of the posterior rectus sheath. Combined component separation techniques provide marginal additional medialization, clinical use of this technique should be carefully balanced against additional risks.

KEY MESSAGE Knowledge of the changes that occur in the abdominal wall after component separation (CS) is essential for understanding the mechanisms of action of the various CS techniques, the changes observed on computed tomography images, and, perhaps most importantly, the anatomic and physiologic changes observed in patients who have undergone CS. Purpose Component separation (CS) techniques are essential adjuncts during most abdominal wall reconstructions. They allow the fulfillment of most modern abdominal wall reconstruction principles, especially primary closure of defects and linea alba restoration under physiologic tension. Knowledge of the post-CS abdominal wall changes is essential to understanding the mechanism of action of the various types of CS, the changes observed on computed tomographic images, and, perhaps most importantly, the anatomic and physiologic changes following CS techniques. Methods A systematic review of the literature was conducted using the PubMed database and other sources to identify articles describing abdominal wall changes after CS Results After excluding non-pertinent articles, 14 articles constituted the basis for this review. Conclusions After reviewing the literature on post CS abdominal wall changes, we conclude the following: (1)The external oblique muscle is significantly displaced laterally after anterior CS, the transversus abdominis muscle shifts very little after posterior CS, and muscle trophism is generally maintained after both techniques. These findings are consistent for both open and minimally invasive CS. (2) The anatomy and physiology of abdominal wall muscles are preserved mainly by the muscles' overlapping function and their ability to undergo compensatory trophism after midline restoration (reloading). (3) Well-performed CS techniques have a low risk of producing bulging and semilunar line hernias. (4) Anterior and posterior CS techniques probably have different mechanisms of action. (5) Current studies on how the nutritional status and postoperative conditioning can alter abdominal wall changes after CS and the mechanisms of the actions involved in anterior and posterior CS are underway.

Component separation (CS) procedures have become an important part of surgeons’ armamentarium. However, the exact criteria for training, procedure/mesh choice, as well as patient selection for CS remains undefined. Herein we aimed to identify trends in CS utilization between various cohorts of practicing surgeons. Members of the Americas Hernia Society were queried using an online survey. Responders were stratified according to their experience, practice profile (private vs academic, general vs hernia surgery), and volume (low (

Purpose Over the last years, great advances in the repair of abdominal wall hernias have dramatically improved patients' outcomes. Especially for large and other complex ventral hernias, the application of component separation techniques has been a landmark in their successful management. The aim of this study is to present our experience with the posterior component separation with transversus abdominis release (TAR) in patients with these demanding ventral hernias. Methods A retrospective analysis of prospectively collected data of all patients who underwent elective ventral hernia repair with TAR between January 2016 and December 2019 was performed. Preoperative, intraoperative, and postoperative data were analyzed. Results A total of 125 patients with large and other complex ventral hernias were included in the final analysis. More than 80% of patients had one or more comorbidities. Of all patients, 116 (92.8%) had a history of previous abdominal surgery, 27 (21.6%) had a history of SSI and nine (7.2%) had active fistulas. Postoperatively, SSOs were presented in 11 patients (8.8%), including three cases of SSI. Neither mesh infection occurred, nor mesh excision required. With a mean follow-up of 2.5 years, only one recurrence was observed. Conclusions With a wound complication rate of less than 9% and a recurrence rate of less than 1%, our results show that TAR is a reliable, safe and effective technique for the repair of massive and other complex ventral hernias. The combination of knowledge of the abdominal wall anatomy at a proficient level, proper training, and adoption of a strict prehabilitation program are considered prerequisites for the successful management of such demanding hernias.

PURPOSE The laparoscopic ventral hernia repair (LVHR) may have a limit of effectiveness, especially in defects greater than 80 cm2, with a higher recurrence rate which contraindicates this technique. The purpose of this study is to analyze the indication of LVHR determining and comparing the recurrence rate according to defect size in two series. METHODS We analyzed all patients who underwent LVHR between 2007 and 2017. Patients were divided according to the ring size

Objectives: To study the effectiveness of open anterior component separation technique for repair of large incisional abdominal hernias. To study the effect of addition of polypropylene mesh with open anterior CST in sublay position. Study Design: Experimental study. Setting: Department of Surgery, DHQ Hospital Rawalpindi. Period: January 2016 to November 2016. Material & Methods: Patients (n=19) were admitted through OPD electively by purposive non- probability sampling in accordance with the inclusion/exclusion criteria. patients were operated under general anaesthesia. Anterior CST was done by standard Ramirez technique. Polypropylene mesh was placed in sublay (retrorectus) position. Data obtained was analysed by SPSS-20 software to calculate SSI and Recurrence rate. Results: A total of 19 (n=19) patients were included in the study and operated upon.There were 61% males with average age of 42 years and 39% females of average31 years.Average defect size was 10.11 cm with SD of 1.899 cm. Recurrence rate was 5.26%. SSI rate was 10.50%. Patients were followed up for one year for Recurrence of hernia. Conclusion: Anterior component separation is an effective technique for repair of otherwise inoperable large ventral abdominal hernias especially when combined with polypropylene mesh in sublay position. Addition of mesh in sublay position with CST signifantly reduces both recurrence and SSI rate.

Objectives: The aim of this study is to compare the results of different surgical methods used in giant midline incision hernias. Methods: The records of 90 patients operated on for a midline abdominal incisional hernia were reviewed retrospectively. The patients were divided into three groups based on the surgical method used primary prosthetic repair (PPR), component separation with mesh (CSM) and component separation without mesh (CS). Two-year follow-up results were compared. Results: A statistically significant difference was noted between the groups in the transverse diameter measurement of the defect (p = 0.003). Subgroup analyses revealed that the median transverse diameter was higher in the CSM group than in the CS group (p = 0.003). There was also a statistically significant difference in the duration of surgery (p < 0.001), with a subgroup analysis revealing that the duration of surgery was longer in the CSM group than in the PPR and CS groups (PPR-CSM; p = 0.008, CSM-CS; p < 0.001). Recurrent incisional hernia, smoking and postoperative morbidity development were found to be statistically and significantly associated with recurrence (p = 0.005, p = 0.002, p < 0.001; respectively). Conclusions: The use of the CSM method for the repair of giant incisional hernias may reduce recurrence.

Endoleaks are a frequent indication for reintervention after endovascular repair of an abdominal aortic aneurysm. Here we present a method of open repair of a persistent type II endoleak involving graft component separation and reconstruction, in a patient with symptomatic interval aneurysmal sac enlargement despite endovascular coiling and embolization. This case report demonstrates an alternative open technique of endograft component separation and reconstruction that may be required in cases where open repair with sac exploration and vessel oversewing is hindered by the graft position.

Giant inguinal hernia is one of the most unusual and significantly challenging in terms of surgical management. It is defined as an inguinal hernia that extends below the midpoint of inner thigh when the patient is in standing position. The physiological changes associated with the loss of domain can pose a risk for increased complications during surgery and the post-operative period. There is no standard surgical procedure for the treatment of this unusual and challenging type of groin hernia. Various surgical techniques have been reported in previous publications. We present a case of a giant right inguinoscrotal hernia; after CT examination, spirometry, blood gas analysis, echocardiography and anesthetic evaluation was treated with a single-stage repair using posterior component separation technique and transversus abdominis release. Keywords: Component separation; Giant Inguinal hernia; Inguinoscrotal hernia; Transversus Abdominis Release

Background Although controversial, the use of acellular dermal matrices (ADMs) for abdominal wall reconstruction (AWR) is increasing. There are now many different ADMs available, but there is a lack of studies directly comparing ADMs in terms of outcomes. Materials and methods A retrospective chart review was performed to compare perioperative wound complications (up to 120 d postoperatively) between patients who underwent AWR with the human noncrosslinked ADMs Alloderm or Cortiva from January 2012 to March 2020. Surgical technique uniformly consisted of open component separation, onlay implantation of ADM, and progressive tension suture fixation of ADM. Results After exclusions, 53 patients were in the Alloderm group, and 29 patients were in the Cortiva group. The overall perioperative wound complication rate between Alloderm (51.92%) and Cortiva (72.41%) was not significantly different (P = 0.09921). The average follow-up for Alloderm was 76.69 ± 29.52 d and for Cortiva was 66.93 ± 35.16 d (P = 0.2088). There were no cases that required explantation of ADM. Conclusions Given the similar perioperative wound complication profiles, the more cost-effective ADM may be a consideration for use in AWR. The fact that there were zero instances of ADM explantation also supports the use of ADM in these high-risk cases.

not available Journal of Surgical Sciences (2020) Vol. 24 (1) : 32-37

Introduction Minimally invasive techniques are now routine in complex abdominal wall defects repair. Although laparoscopy allows to reduce post-operative pain, promoting a more rapid recovery and shortening hospital stay, it is associated with risk of bowel injury and adhesions development, when intraperitoneal mesh is placed. We report the case of a patient affected by large recurrent incisional hernia, treated with a new hybrid endoscopic approach. Presentation of case Patient treated with the novel approach is a 53-year-old male, BMI 27, smoker, with epigastric recurrence of incisional hernia and prosthetic fistula. An endoscopic preaponeurotic subcutaneous access was used. Repair with sublay mesh, bilateral anterior component separation and muscular reinsertions was conducted. Three months after surgery, no signs of recurrence were observed and complete functional recovery had been achieved. Discussion The new technique adopted benefits from all the advantages of minimally invasive surgery, allowing to avoid risks associated with laparoscopic access. Bilateral anterior component separation with muscular reinsertions is the key for tension-free suture. Conclusion To our knowledge, this is the first time that a complex recurrent incisional hernia is repaired with the hybrid technique aforementioned. The approach used is certainly technically challenging, thus requiring a team skilled in the use of laparoscopy. Good outcomes reported are a further demonstration that minimally invasive surgery can be a valid alternative to traditional open techniques for large abdominal wall defects repair., Highlights • Minimally invasive surgical techniques are commonly used in complex ventral hernia repair. • Laparoscopy is effective but it is associated with the risk of bowel injury and adhesions development. • Component separation allows tension-free suture in presence of large hernia defects. • A hybrid approach with endoscopic preaponeurotic access can be used to treat complex cases.

Posterior component separation with transversus abdominis release is a new procedure and is quickly gaining popularity. It has shown promising results in terms of low recurrence rates for large and complex hernias. However, there are very little Indian data available on this to date. The purpose of this study was to assess the outcomes of the technique at three centers in India. This was a retrospective analysis of the prospectively collected data. Patients with a minimum follow-up of 3 months who underwent open or minimal access posterior component separation were included. A total of 72 patients (open = 44, minimal access = 25, and hybrid = 3) were included in the analysis. At a follow-up ranging from 3 months to 35 months, there were two recurrences (2.78%). Surgical site occurrences were seen in 23/72 (31.9%), and surgical site infection was seen in 7/72 (9.7%). Surgical site occurrence requiring procedural intervention was 3/72 (4.2%). There were two (2.78%) mortalities in the open group due to myocardial infarction. Posterior component separation with transversus abdominis release may have advantages in terms of low recurrence in large hernias in the Indian population and can be used in carefully selected patients.

Repair of loss of domain hernia (LODH) has many related postoperative complications and abdominal separation techniques are well-accepted methods for avoiding abdominal compartment syndrome. The purpose of our study was to evaluate the effectiveness of anterior component separation technique and method of the patient selection for this technique in LODH. Between 2016 and 2019, 40 consecutive patients operated for LODH with over 10-cm fascial defect were analyzed prospectively. Patients were divided into two groups according to the hernia volume/abdominal volume ratio. Group 1 included patients less than 0.25 ratio and group 2 over 0.25. Bladder pressure, length of hospital stay, pain, bleeding, wound infection, and the duration of drainage tube were compared between groups. Average operation time, hospital stay, and wound drainage time was similar in both groups. In group 1, postoperative intra-abdominal hypertension was detected in 5 patients, whereas there was none in group 2. The rating of the individual measurement and sum of the defects will give proper results in multiple hernia defects. The properly performed anterior component separation alone would be an effective method on patients with LODH in order to avoid abdominal compartment syndrome.

Resumen Introducción. La cirugía de hernia ventral implica una situación de complejidad, dadas las múltiples variables que se deben controlar para estimar los posibles factores determinantes del éxito quirúrgico y la aparición de complicaciones. Según la literatura científica mundial, la incidencia de hernia ventral se estima entre el 10 y el 15 %, y la tasa promedio de complicaciones de esta cirugía varía entre el 10 y el 37 %. El objetivo del presente estudio fue describir la experiencia y los resultados de la cirugía de hernia ventral en dos instituciones de IV nivel, en el periodo de enero de 2015 a marzo de 2019. Métodos. Se trata de un estudio observacional, descriptivo y de cohorte histórica, de pacientes mayores de edad sometidos a corrección de hernia ventral en las Clínicas Colsanitas en los últimos cinco años. Los datos se tomaron del registro estadístico de las instituciones en mención. Resultados. Se incluyeron 612 pacientes en un periodo de cinco años, la mayoría de los cuales era de sexo femenino, con sobrepeso, y predominantemente, con defectos combinados mediales; la tasa general de complicaciones fue del 20 % y, el porcentaje de infección del sitio operatorio, de 9 %; para el desarrollo de esta infección, la técnica de separación de componentes se encontró como un factor de riesgo (p=0,01; RR=2,9; IC 95% 1,32-6,5). En este estudio, no se analizó la recidiva como factor de los diferentes resultados. Conclusiones. Existen pocos datos en la literatura nacional sobre los resultados de este tipo de procedimiento quirúrgico. Es por ello que se procuró brindar a la comunidad científica los resultados de morbimortalidad de esta muestra de pacientes intervenidos por hernia ventral en los últimos cinco años. Abstract Introduction: Ventral hernia surgery involves a complex scenario, given the multiple variables that must be controlled to estimate the possible determinants of surgical success and the appearance of complications. According to the world literature, the incidence of ventral hernia is estimated between 10% and 15%, and the average complication rate of this surgery varies between 10% and 37%. The objective of this study was to describe the experience and outcomes in ventral hernia surgery in two institutions of IV level, in the period from January 2015 to March 2019. Methods: This is an observational, descriptive and historical cohort study of patients undergoing correction of ventral hernia at Colsanitas Clinics in the last five years. The data were collected from the statistical record of the mentioned institutions. Results: A total of 612 patients were included in a five-year period, most of whom were female, overweight, and predominantly with medial combined defects; the overall complication rate was 20%, and the percentage of operative site infection, 9%. From the development of this infection, the component separation was found as a risk factor (p= 0.01; RR= 2.9; CI95% 1.32-6.5). In this study, recurrence was not analyzed as an outcome factor. Conclusions: There is little data in the national literature on the results of this type of surgical procedure, which is why we tried to provide the scientific community with the morbidity and mortality results in our population of patients operated for ventral hernia in the last five years.

BACKGROUND AND AIMS: The eventration involves a highly variable surgical entity with a wide range of possible surgical techniques for its repair, without having found a “Gold Standard” technique. With these animal study, we propose a possible and useful surgical procedure for hernia repair. MATERIALS AND METHODS: We present a modified technique of the anterior component separation (ACS) based on a release of the external oblique muscle from a posterior anatomical approach, accessing the space from the retrofascial space of the anterior sheath of the rectus abdominis muscle. The technique was performed in an experimental animal model with pigs of the “Large White” breed of 20-25 kg since the pig is a good representative model of human anatomy and its abdominal wall. RESULTS: The technique was performed in an experimental animal model with pigs of the “Large White” breed. The procedure through the anterior retrofascial space of the rectus abdominal muscle was easily done, allowing the access to the inter-oblique space and facilitating the release of the external oblique muscle. CONCLUSION: Waiting for its clinical application, the ACS by its external retrofascial space approach could be an interesting surgical resource for incisional hernia repair.

Background The optimal material for reinforcement of complex abdominal ventral hernia repair (VHR) remains controversial. Biologic prostheses such as porcine and bovine acellular dermal matrix (PADM/BADM) have shown favorable results, but few head-to-head comparisons between the two types exist. We sought to provide such a comparison. Methods We performed a retrospective cohort study comparing 40 consecutive patients who underwent open component separation (CS/VHR) with PADM reinforcement to 39 consecutive patients who underwent open CS/VHR with BADM reinforcement at our institution. Patient characteristics, outcomes, complications, reoperations, and hernia recurrences were obtained by chart review. Fisher’s exact and t-test analyses compared patient characteristics and outcomes between the 2 cohorts. Statistical significance was set as P < .05. Results Patient groups did not differ significantly in race (P=.36), age (P=.8), BMI (P=.34), sex (P=.09), steroid usage (p-1.00), COPD (P=.43), number of previous abdominal operations (P=.66), and duration of follow-up (P=.65). There were significantly more smokers in the PADM group (37.5% vs 12.8%, P=.01). Mean defect size was significantly greater in the PADM group (372.5 cm2 vs 292. cm2 in the BADM group, P=.001) as was the number of Ventral Hernia Working Group (VHWG) grade III/IV hernias (65.0% vs 38.4%, P=.02). Recurrence rates were lower in the BADM group, (12.5% vs 5.1%, P=.26), as was recurrence or complications requiring reoperation (17.5% vs 5.1%, P=.15). Postoperative wound events were also significantly lower in the BADM group (30.0% vs 2.6%, P=.001). Conclusions In our series, CS/BADM was associated with significantly fewer wound complications. Recurrences and complications requiring reoperation were also fewer, which trended toward but did not reach statistical significance, presumably due to the small sample size. These findings indicating superiority of BADM over PADM are potentially confounded by the higher percentage of smokers, the larger mean defect size, and the higher number of VHWG III/IV patients in the PADM group. Further prospective study of these findings is warranted.

Aim Aim of the analysis was to evaluate whether preoperative botulinum toxin infiltration may facilitate anatomical midline reconstruction without the need for – otherwise pre-operative assumed – surgical component separation. Material and Methods Total of 58 patients with complex abdominal wall hernias were included in our single-center retrospective analysis between 03/2015 and 12/2020. Size of the defect, HSV/ACV-ratio, rectus-to-defect-width-ratio (“Carbonell-Index”) as well as risk factors were analyzed. In all patients muscles of the lateral abdominal wall were infiltrated with 300-500 IE of botulinum toxin 4 weeks prior to the abdominal wall reconstruction. CT scans were performed before and 4 weeks after the botulinum toxin infiltration. Results Total of 58 patients (M/F-ratio 36:22), with a mean age of 63.8 years were included in our analysis. Mean BMI was 29.5 kg/m². Total of 50 incisional, 3 umbilical, 2 posttraumatic diaphragmatic hernias and 3 scrotal hernias were analyzed. Surgical component separation after the infiltration with botulinum toxin was necessary in 43% of the cases. Conclusions Preoperative infiltration of the lateral abdominal wall musculature with botulinum toxin facilitated midline reconstruction of the abdominal wall without the need for myofascial release in 57%. Reduction of surgical trauma could therefore be achieved in several patients.

Aim Traditional anterior component separation during incisional hernia repair is associated with a high rate of postoperative wound morbidity. Because extensive subcutaneous dissection is avoided by endoscopic anterior component separation (eACS) or open transversus abdominis release (TAR), we hypothesized that these techniques did not increase the incidence of surgical site occurrence compared to incisional hernia repair without component separation. Material and Methods This was a retrospective cohort study of patients undergoing open, retro-rectus incisional hernia repair. Component separation during retro-rectus repair was performed using eACS or TAR. The primary outcome was 30-day incidence of postoperative surgical site occurrence. Secondary outcomes included length of stay, 30-day readmission, 30-day reoperation rate and 3-year recurrence rate. Results A total of 322 patients underwent retro-rectus repair, 168 (52%) of whom received either eACS or TAR. Addition of eACS or TAR was neither associated with surgical site occurrence, (odds ratio: 0.82, confidence interval: 0.40-1.68, P = 0.596) nor with hernia recurrence (hazard ratio 0.80, CI 0.27-2.40, P = 0.693). There was no significant difference between the groups regarding the frequencies of 30 day-readmission or 30-day reoperation. Conclusions The addition of eACS or TAR to a retro-rectus incisional hernia repair was not associated with increased wound morbidity or hernia recurrence.

Aim To assess the short- and long-term outcomes of posterior component separation with transversus abdominis release (PCS-TAR) at our Centre. Material and methods From 2016, our abdominal wall unit started with PCS-TAR for the treatment of patients with complex abdominal wall hernias. We report our prospectively collected preliminary results. Results Sixty-six patients underwent PCS-TAR. Twenty patients had already received at least one previous hernia repair, 16 with mesh implantation. The median width of the defect was 12 cm (range 3 - 35), the median length 15 (range 4 - 40). Defects were multiple in 13 cases, swiss cheese in 2 cases. Eleven defects had both a midline and a lateral component, 3 had a concomitant parastomal hernia. Thirty-eight cases were located near the abdominal wall borders. The median duration of surgery was 255 minutes (range 84 - 740). TAR was partial in 24 cases and monolateral in 24. Twelve cases involved previous mesh removal. Fifty patients received implantation of more than one mesh: the most common combination was a PVDF mesh on top of a biosynthetic mesh. The mesh seldom needed to be fixed. The median length of stay was 6 days (range 3 - 61). Postoperative complications occurred in 22 patients (3 were major). Surgical site occurrences happened in 7 cases. After at least 12 months of follow up per patient, there was 1 recurrence, 1 case of chronic pain and no chronic seromas. Conclusions Posterior component separation with transversus abdominis release offers a versatile solution for a variety of complex ventral hernias, with good short- and long-term results.

Aim Posterior component separation with transversus abdominis release (PCS-TAR) represents a good option for challenging complex ventral hernia repairs. We present a case of PCS-TAR for a giant lumbar hernia in a patient with a transplanted kidney. Material and Methods The patient is a 46 years old man with a Charlson Comorbidity Index of 2 and a BMI of 27.5 kg/m2 who underwent a kidney transplant in 2005 and a subsequent open repair with mesh implantation for an incisional hernia in 2007. Two years later, he experienced a hernia recurrence, but chose conservative management. In 2019, the patient complained of progressively worsening pain and bulky sensation. Due to the size and location of the defect and the massive relaxation of the muscle fibers, open repair with PCS-TAR was indicated. Results In 2019, the patient underwent right-sided PCS-TAR with retromuscular placement of one polyvinylidene fluoride (PVDF) mesh and one biosynthetic mesh. Duration of the procedure was 295 minutes. Two drains were placed, respectively in the subfascial and in the subcutaneous plane. Postoperative course required non-invasive ventilation for respiratory distress, but was otherwise uneventful and he was discharged on postoperative day 8. After 12 months, the patient showed no signs of recurrence. Conclusions PCS-TAR is a versatile technique for the repair of complex ventral hernias, with an acceptable rate of postoperative complications and good long-term outcomes.

Aim To obtain tension-free closure for giant incisional hernia repair, anterior or posterior component separation (ACS, PCS) is often performed. In extreme patients, ACS and PCS may be combined. The aim of this study was to assess the additional medialization after simultaneous ACS and PCS. Material and Methods Fresh-frozen post mortem human specimens were used. Both sides of the abdominal wall were subjected to retro-rectus dissection (Rives-Stoppa), ACS and PCS, the order in which the component separation techniques (CST) were performed was reversed for the contralateral side. Medialization was measured at three reference points. Results ACS provided most medialization for the anterior rectus sheath, PCS provided most medialization for the posterior rectus sheath. After combined CST total median medialization ranged between 5.8 and 9.2 cm for the anterior rectus sheath, and between 10.1 and 14.2 cm for the posterior rectus sheath (depending on the level on the abdomen). For the anterior rectus sheath, additional PCS after ACS provided 15% to 16%, and additional ACS after PCS provided 32% to 38% of the total medialization after combined CST. For the posterior rectus sheath, additional PCS after ACS provided 50% to 59%, and additional ACS after PCS provided 11% to 17% of the total medialization after combined CST. Retro-rectus dissection alone contributed up to 41% of maximum obtainable medialization. Conclusions ACS provided most medialization of the anterior rectus sheath and PCS provided most medialization of the posterior rectus sheath. Combined CST provides marginal additional medialization, clinical use of this technique should be carefully balanced against additional risks.

Aim Effects of component separation (CS) on abdominal wall musculature have only been investigated in smaller case series. The study aimed to compare abdominal wall alterations following endoscopic anterior component separation (EACS) or transverse abdominis release (TAR). Material and Methods Computed tomography scans were evaluated in patients who underwent open ventral hernia repair with TAR or EACS. Lateral abdominal wall muscle thickness and displacement were compared with preoperative images after bilateral CS and the undivided side postoperatively after unilateral CS. Results In total, 105 patients were included. The mean defect width was 12.2 cm. Fifty-five (52%) and 15 (14%) underwent bilateral and unilateral EACS, respectively. Five (5%) and 14 (13%) underwent bilateral and unilateral TAR, respectively. Sixteen (15%) underwent unilateral EACS and contralateral TAR. Complete fascial closure was achieved in 103 (98%) patients. The external oblique and transverse abdominis muscles were significantly laterally displaced with a mean of 2.74 cm (95% CI 2.29-3.19 cm) and 0.82 cm (0.07-1.57 cm) after EACS and TAR, respectively. The combined thickness of the lateral muscles was significantly decreased after EACS (mean decrease 10.5% [5.8-15.6%]) and insignificantly decreased after TAR (mean decrease 2.6% [-4.8-9.5%]), mean reduction difference EACS versus TAR 0.22 cm (-0.01-0.46 cm). One (1%) patient developed an iatrogenic linea semilunaris hernia after EACS. The recurrence rate was 19% after mean 1.7 years follow-up. Conclusions The divided muscle was significantly more laterally displaced after EACS compared with TAR. The thickness of the lateral muscles was slightly decreased after EACS and unchanged after TAR.

Background Ventral hernia repair is one of the most common operations performed today, yet when complex and huge it presents a true challenge for the surgical team. Aim of the Work To assess the feasibility, safety and efficacy of Transversus Abdominis release technique in management of ventral hernia with large defects. Patients and Methods This study is a prospective interventional study conducted at Ain Shams University Hospitals on 40 patients diagnosed as having ventral hernia with a defect equal to or more than 10cm in width and operated upon between October 2018 and October 2019 with minimal follow up of 6 months postoperatively. Results 40 ventral hernia patients were enrolled in the study. Mean operative time (in minutes) in TAR patient is 268.5min (4hr 28min) with SD ± 47.4. Postoperative pain evaluation using the visual analogue scale (VAS) score, the postoperative pain was assessed 48hrs postoperatively, the mean VAS score for TAR patient being (6.77 ± 1.70). Early Postoperative wound complications 10 (25.0%). Conclusion After this TAR technique are effective and reliable method in experienced hands.

Summary:. Some techniques to reconstruct the abdominal wall have been published, including the component separation procedure. The contribution of the rectus abdominis flap in the reconstruction of a giant incisional hernia is reported. The authors report three clinical cases in which the component separation technique was insufficient to reconstruct a giant midline incisional hernia. As a salvage technique, the rectus abdominis flap was dissected in the form of a hinge. The postoperative period was successful in all patients, combining both techniques. The rectus abdominis hinge flap could be used as a complementary technique to component separation to reconstruct a giant midline incisional hernia. There are several options to reconstruct the abdominal wall, such as anterior transposition of the posterior rectus sheath,1 or rotation of the anterior sheath toward the midline. This strategy is known as open book.2 The rectus turnover flap is also used.3 The anterior component separation technique closes defects less than 20 cm width.4 If it is wider, the reconstruction is more difficult. When the operative plan fails in the operating room, an additional technique should be considered. We report on the cases in which we use the rectus abdominis hinge flap.

Introduction In this study we presented our results with anterior component separation technique utilized in the repair of giant ventral hernias. Our primary endpoints were the rates of surgical site occurrences and recurrence at three years. Besides we investigated the impact of components separation repair on abdominal wall functions. Methods We retrospectively analyzed the prospectively-collected data of 40 patients that were operated on between April 2004 and February 2012 for their median ventral hernias sizing larger than 15 cm in width. Our inclusion criteria for component separation program excellently corresponded today's “giant ventral hernia” standards. The method used for components separation was identical to the original Ramirez technique, and did not comprise of any mesh reinforcement. The ICU stays, prolonged intubation, early and late complications, mortality and recurrences at three years were recorded. We used a curl-up test to demonstrate the amelioration of the abdominal wall functions postoperatively. Results The older age and larger defect size were the significant risk factors necessitating prolonged intensive care. Surgical site occurrences were recorded in 18 patients (45.0%). A total of 7 recurrences (17.5%) were detected at three years. Patients showed a significant improvement in raising their trunks after repair (p Conclusions Our findings demonstrated that components separation technique in the original form caused excessive wound complications including skin necrosis which in turn caused delayed discharge from the hospital. The 17.5% recurrence rate seemed higher than those of more recent papers. The already-established newer modifications should be integrated in the repair method. The components separation repair clearly improves abdominal wall functions.

Purpose Posterior component separation with transversus abdominis release (TAR) enables medial myofascial flap advancement in complex abdominal wall reconstruction. Here, we add to a growing body of literature on TAR by assessing longitudinal clinical and patient-reported outcomes (PROs) after complex ventral hernia repair (VHR) with TAR. Methods Adult patients undergoing VHR with TAR between 10/15/2015 and 1/15/2020 were retrospectively identified. Patients with parastomal hernias and Results Fifty-six patients were included with a median age and body mass index of 60 and 30.8 kg/m2, respectively. The average hernia defect was 384 cm2 [IQR 205-471], and all patients had retromuscular mesh placed. The most common complications were delayed healing (19.6%) and seroma (14.3%). There were no cases of mesh infection or explantation. Previous hernia repair and concurrent panniculectomy were risk factors for developing complications ( P < .05). One patient (1.8%) recurred at a median follow-up of 25.2 months [IQR 18.2-42.4]. Significant improvement in disease-specific PROs was maintained throughout the follow-up period (before to after P < .05). Conclusion Transversus abdominis release is a safe and efficacious technique to achieve fascial closure and retromuscular mesh in the repair of complex hernia defects.

Complex ventral hernia repair has been a challenging task of difficulty in primary closure of the defects. Transversus abdominis muscle release (TAR) procedure, as a type of posterior component separation, is a new myofascial release technique in complex ventral hernia repair. TAR creates immense retro muscular plane and allows bilaminar ingrowth of the mesh, allowing primary closure of defect. Owing to its favorable outcome, suitability of TAR technique in treatment of complex ventral hernia could be explored further where closure of the primary defect is difficult.

This was a retrospective analysis of a prospectively maintained database that objectively evaluated the benefit of preoperative chemical component separation with botulinum toxin A in complex hernia repairs. Continued evaluation.

Background: Large ventral hernia continued to possess a great challenge to general surgeon. Historically a variety of permutation and combination of repair have evolved. However, no single surgical repair can meet the requirement completely. A combination of component separation accompanied with mesh repair needs to be studied and analyse. Aim: To study percentage of patients required only anterior or both (anterior and posterior) component separation. Methods: 30 Patient undergoing component separation were evaluated. Tissue repair comprises of component separation with creation of flap from rectus sheath in order to breach midline and creation of new midline. This followed by preperitoneal (retro rectus) or above the rectus muscle polypropylene soft mesh enforcement with complete cover over mesh by anterior rectus sheath. So, in our patients mesh never fixed above the rectus sheath. Results: In our study we realised that most of the large defect hernias are required more anterior compartment separation. Both compartments separation is required only in complex, and more than 10 cm defect of anterior abdominal wall hernia. Conclusion: Anterior component separation is often required and enough for abdominal wall reconstruction with good cosmetic contour without any recurrence than both component separation.

Background Component separation technique (CST) allows fascial medialization during abdominal wall reconstruction (AWR). Wound contamination increases the incidence of wound complications, which multiplies the incidence of repair failure. The aim of this study was to compare the impact of CST on AWR outcomes in contaminated fields in comparison to those operations without CST. Methods A prospective, single institution hernia database was queried for patients undergoing AWR with CST and contamination. A case control cohort was identified using propensity score matching. Results There were 286 CSTs performed in contaminated cases. After propensity score matching, 61 CSTs were compared to 61 No-CSTs. These groups were matched by defect area (CST:287.1 ± 150.4 vs No-CST:277.6 ± 218.4 cm2, p = 0.156), BMI (32.0 ± 7.0 vs 32.2 ± 6.0 kg/m2, p = 0.767), diabetes (26.2% vs 32.8%, p = 0.427), and panniculectomy (52.5% vs 36.1%, p = 0.068). Groups had similar rates of wound complications (42.6% vs 40.7%, p = 0.829) and recurrence (4.9% vs 13.1%, p = 0.114). Conclusions The use of CST in the face of contamination is not associated with an increase in wound complications, mesh complications, or recurrence.

Background As posterior component separation techniques continue to gain popularity there is uncertainty regarding the degree of fascial advancement afforded by the various techniques. Our study seeks to compare the degree anterior rectus sheath translation seen in full transversus abdominus release compared to simple release of the posterior lamella of the rectus sheath. Methods Ten hemi-abdomens in five fresh cadavers were dissected. One hemi-abdomen underwent external oblique release. The contralateral hemi-abdomen underwent retrorectus dissection and initial release of the internal lamella of the internal oblique, followed by full transversus abdominus release. A 4 kg weight was suspended from the fascia and excursion was measured after 1) external oblique separation, 2) posterior lamella of the internal oblique separation, and 3) transversus abdominis separation. Results Average unilateral hemifascial translation after release of the external oblique provided an average unilateral hemi-fascial translation of 3.38 cm (+/- 0.69). Release of the posterior lamella of the internal oblique provided 3.98 cm (+/- 0.94). After transversus release the average translation increased to 4.31 cm (+/- 0.89). Conclusions In this cadaveric study, the majority (92%) of fascial advancement afforded by posterior component separation was achieved by an intermediate step in the transversus abdominus release operation: division of the posterior lamella of the internal oblique.

Component separation remains an integral step during ventral hernia repair. Although a multitude of techniques are described, anterior component separation (ACS) via external oblique release (EOR) and posterior component separation (PCS) via transversus abdominis muscle release (TAR) are commonly utilized. The extent of myofascial medialization after ACS or PCS has not been well elucidated. We conducted a comparative analysis of ACS versus PCS in an established cadaveric model. Fifteen cadavers underwent both ACS via EOR and PCS via TAR. Following midline laparotomy (MLL), baseline myofascial elasticity was measured. Steps for ACS included creation of subcutaneous flaps (SQF), external oblique release (EOR), and retrorectus dissection (RRD). For PCS, steps included retrorectus dissection (RRD), transversus abdominis muscle division (TAD), and retromuscular dissection (RMD). Maximal advancement of anterior rectus fascia (ARF) was measured following application of tension to the fascia as a whole, and separately at upper, middle, and lower segments. Statistical analysis was performed with Mann–Whitney U test. Values are represented as average myofascial medialization in centimeters. Following MLL an average of 5.0 ± 0.9 cm (range 3.4–6.0 cm) of baseline medialization was obtained. Complete ACS provided 8.8 ± 1.2 cm (range 6.3–10.7 cm) of ARF advancement compared to 10.2 ± 1.7 cm (range 7.6–12.7 cm) with PCS, p = 0.046. In the upper and mid-abdomen, we noted increased ARF advancement with PCS versus ACS (8.1 ± 1.4 cm vs. 6.7 ± 1.2 cm and 11.4 ± 1.5 vs. 9.6 ± 1.4 cm, respectively, p = 0.01). Similar levels of ARF advancement were observed in the lower abdomen, 9.1 ± 1.7 cm versus 8.7 ± 1.8 cm, p = 0.535. Component separation via both anterior and posterior approaches provide substantial myofascial advancement. In our model, we noted statistically greater anterior fascial medialization after PCS versus ACS as a whole, and especially in the upper and mid-abdomen. We advocate PCS as a reliable and possibly superior alternative for linea alba restoration for reconstructive repairs, especially for large defects in the upper and mid-abdomen.

Resumen La tendencia actual en cirugía mínimamente invasiva de pared abdominal es la reconstrucción completa de la línea media, restituyendo los músculos rectos a su posición original. Si se lleva a cabo dicha reparación musculoaponeurótica, conseguimos diferentes ventajas, una menor incidencia de seromas postoperatorios, de la recurrencia herniaria y una mejora considerable de la dinámica de pared abdominal y de la fuerza contráctil de los músculos rectos; así como de los músculos laterales del abdomen. El cierre primario del defecto se puede conseguir en defectos menores de 7 cm de ancho sin excesiva tensión. Sin embargo, para conseguir cerrar defectos de línea media por encima de 7-8 cm de ancho, es necesario asociar diferentes técnicas para reaproximar los músculos rectos a la línea media y reconstruir completamente la pared abdominal. Es en estos casos en los que las diferentes técnicas de separación mínimamente invasiva de pared abdominal entran en juego. La separación anterior endoscópica de componentes, La separación posterior endoscópica y la separación posterior tipo TAR, son alternativas válidas para conseguir el objetivo de reconstruir completamente la pared abdominal con técnicas mínimamente invasivas.

Introduction: Incisional hernias after abdominal surgical procedures cause morbidity, significant loss of labor and affect quality of life. In this study, we investigated whether component separation (CS) technique is a safe method in patients with incisional hernia. We evaluated the results of this technique in terms of wound infection and recurrence. Methods: Thirty incisional hernia cases operated with CS technique between February 2012 and February 2014 were included in the study. Demographic data, body mass index (BMI), American Society of Anesthesiologists (ASA) score, defect size, wound complications and recurrences after one-year follow-up were evaluated. Results: Seventeen patients were female and 13 were male. The mean age of the patients was 54.8 years (range: 29-76). The mean BMI of the patients was 26.8 kg/m(2) (range: 20.5-32.9). The mean hernia transverse diameter was 9.6 cm (range: 6.5-23). Mortality was not observed in any of the patients. Wound problems were observed in six of 30 patients in CS repair, and recurrence was observed in three of these patients. Recurrence was observed in only one of the remaining 24 patients without a wound problem. Recurrence was found to be statistically related to wound problem. There was also a significant relationship between BMI, hernia transverse diameter, ASA score and recurrence. Conclusion: In selected cases, CS technique is a safe technique for incisional hernia repair. It can be performed by paying attention to wound problems. WOS:000499973900014

BMI and hernia defect size are strongly associated with outcomes after open ventral hernia repair (OVHR). The impact of abdominal subcutaneous fat (SQV), intra-abdominal volume (IAV), hernia volume (HV), and ratio of HV to intra-abdominal volume (HV:IAV, representing visceral eventration) is less clearly elucidated. This study examines the interaction of multiple markers of adiposity and hernia size in OVHR. OVHR with preoperative CT scans were identified. 3D volumetric software measured HV, SQV, IAV, and HV:IAV was calculated. A principal component analysis was performed to create new component variables for collinear variables. Hernia PC was composed primarily of hernia dimensions, EAV (extra-abdominal volume PC) included SQV and BMI, and IAV PC included IAV. A total of 1178 OVHR patients had a preoperative CT scan. Their demographics included a mean age of 58.5 ± 12.4 years, BMI of 34.2 ± 7.7 kg/m2, and 57.8% were female. The mean defect area was 150.8 ± 136.7 cm2, and 66.0% were recurrent, Patients had mean SQV of 6719.4 ± 3563.9 cm3, HV of 966.9 ± 1303.5 cm3, IAV of 4250.2 ± 2118.1 cm3, and a HV:IAV of 0.29 ± 0.46. In multivariate analysis, Hernia PC was associated with panniculectomy (OR 1.52, CI 1.37–1.69) and component separation (OR 1.34, CI 1.21–1.49) and was negatively associated with fascial closure (OR 0.78, CI 0.69–0.88). Hernia PC was also associated with reoperation, readmission, and development of wound complications (OR 1.18, CI 1.08–1.30; OR 1.15, CI 1.04–1.27; OR 1.28, CI 1.16–1.41, respectively). EAV PC was associated with performance of a panniculectomy (OR 1.33, CI 1.20–1.48), readmission (OR 1.18, CI 1.06–1.32), and wound complications (OR 1.41, CI 1.27–1.57). IAV PC was not associated with adverse outcomes. Values of hernia area, volume, IAV, HV:IAV, BMI, and SQV are collinear markers of patient obesity and hernia proportions. They are distinct enough to be represented by three principal component variables, indicating more nuanced discrete influences on variability of surgical outcomes other than BMI.

Highlights • We present three cases of incisional hernia repair using onlay self-gripping mesh. • The mesh was placed following the anterior component separation technique. • Self-gripping mesh enhances tissue adhesion and requires minimal suture fixation. • The advantages are more sufficient reinforcement and technical simplicity. • The disadvantages are risk of decreased blood flow, infection, fistula, and pain., Introduction Incisional hernia (IH) is a common postoperative complication that affects 10% of the patients who undergo abdominal surgery. The component separation (CS) technique is suitable for large and/or complex hernias; however, CS alone may not eliminate recurrence and is associated with an increased incidence of wound complications. Self-gripping mesh enhances tissue adhesion and contributes to a reduced risk of migration, chronic pain, and other complications. Here, we present three cases of IH that were successfully repaired by anterior CS (ACS) using onlay self-gripping meshes. Case presentation All three patients underwent surgery using the following technique: Briefly, a skin flap was created with release of the external oblique muscle and preservation of the perforating vessels. The linea alba was closed with absorbable interrupted sutures. A self-gripping mesh was trimmed and placed with a 4–5 cm overlap bilaterally from the closed linea alba using an onlay technique. For all patients, the postoperative courses were uneventful and there were no complications at the 3-month follow-up. Discussion The advantages of our technique include more sufficient abdominal reinforcement, technical simplicity, and minimal time required for mesh placement. The disadvantages are the potential risk of decreased blood flow of the skin flaps, wound infection, intestinal fistula, persisting or chronic pain, and difficulty with subsequent abdominal surgery. Conclusion The use of self-gripping mesh with ACS can be performed without increasing the operative time or causing short-term surgical complications. This technique may be recommended for large IH because of its simplicity and secure abdominal reinforcement provided.

Key Clinical Message This article reports on the use of Botox preoperatively for the treatment of a complex ventral hernia which would have typically been treated with component separation technique. The case demonstrates that using the recently developed technique can aid in performing a tension‐free hernia repair with potentially lower complication and recurrence rates.

Background Large incisional hernias require medialization of the rectus abdominis muscles to facilitate tension-free closure. Medialization may be achieved by Rives-Stoppa, anterior component separation, or posterior component separation. This study aims to compare medialization achieved by these techniques in postmortem human specimens. Methods First, the Rives-Stoppa procedure was performed. Subsequently, anterior and posterior component separation were performed on one side in each specimen, with each specimen functioning as its own control. Medialization was measured at three levels of the linea alba with three 1-kg weights. Both medialization obtained in addition to initial medialization after opening the linea alba and total medialization were measured. Results are presented as median and interquartile range. Results A total of 13 postmortem human specimens were included (Rives-Stoppa n = 13, component separation n = 10). Additional medialization after Rives-Stoppa was 1.2 cm (IQR: 0.3–2.2) for the anterior rectus sheath and 2.2 cm (IQR: 1.6–3.0) for the posterior rectus sheath (total medialization: 3.9 and 4.5 cm). For the anterior rectus sheath, additional medialization was 2.6 cm (IQR: 1.2–3.6) after anterior component separation and 1.9 cm (IQR: 0.4–3.4) after posterior component separation (P = .125, total medialization: 6.5 and 5.7 cm). For the posterior rectus sheath, additional medialization was 3.0 cm (IQR: 2.2–3.7) after anterior component separation and 5.2 cm (IQR: 4.2–5.9) after posterior component separation (P Conclusion Posterior component separation yielded significantly more medialization of the posterior rectus sheath compared with Rives-Stoppa and anterior component separation. Anterior component separation may provide marginally more medialization of the anterior rectus sheath.

Aim To analyze the outcomes of component separation techniques (CST) to treat incisional hernias (IH) in a large multicenter cohort of patients. Methods All IH repair using CST, registered in EVEREG from July 2012 to December 2019, were included. Data on the pre-operative patient characteristics and comorbidities, IH characteristics, surgical technique, complications, and recurrence were collected. Outcomes between anterior (ACS) and posterior component separation (PCS) techniques were compared. Risk factors for complications and recurrences were analyzed. Results During the study period, 1536 patients underwent CST (45.5% females) with a median age of 64.0 years and median body mass index (BMI) of 29.7 kg/m2. ACS was the most common technique (77.7%). Overall complications were frequent in both ACS and PCS techniques (36.5%), with a higher frequency of wound infection (10.6% vs. 7.0%; P = 0.05) and skin necrosis (4.4% vs. 0.1%; P P = 0.001), previous repair (OR 0.75; P = 0.038), morbid obesity (OR 0.67; P = 0.015), ASA grade (OR 0.62; P P P = 0.001). After a minimum follow-up of 6 months (median 15 months; N = 590), 59 (10.0%) recurrences were diagnosed. Operations performed in a non-specialized unit were significantly associated with recurrences (HR 4.903, CI 1.64–14.65; P = 0.004). Conclusion CST is a complex procedure with a high rate of complications. Both ACS and PCS techniques have similar complication and recurrence rates. Operations performed in a specialized unit have better outcomes.

Incisional hernias are common late complications of abdominal surgery, with a 1-year post-laparotomy incidence of about 20%. A giant hernia is often preceded by severe peritonitis of various causes. The Fasciotens® Abdomen device is used to stretch the fascia in a measurably controlled manner during surgery to achieve primary tension-free abdominal closure. This prospective observational study aims to clarify the extent to which this traction method can function as an alternative to component separation (CS) methods.Methods: We included data of 21 patients treated with intraoperative fascia stretching in seven specialized hernia centers between November 2019 and August 2020.Results: Intraoperatively-measured fascial distance averaged 17.3 cm (range 8.5–44 cm). After application of diagonal-anterior traction >10 kg for an average duration of 32.3 min (range 30–40 min), the fascial distance decreased by 9.8 cm (1–26 cm) to an average 7.5 cm (range 2–19 cm), which is a large effect (r = 0.62). The fascial length increase (average 9.8 cm) after applied traction was highly significant. All hernias were closed under moderate tension after the traction phase. In 19 patients, this closure was reinforced with mesh using a sublay technique.Conclusion: This method allows primary closure of complex (LOD) hernias and is potentially less prone to complications than component separation (CS) methods.

Management of large abdominal wall desmoid tumours is complicated due to the unpredictable behaviour of desmoids and the need for laborious reconstruction of the abdominal wall after wide local excision. A multidisciplinary team approach, including surgeons, oncologists and plastic surgeons, is necessary for proper management. This case highlights the diagnostic and surgical challenges related to the reconstruction of abdominal wall defect, after radical excision of a 30×30×25 cm desmoid tumour, originating from left rectus muscle. The defect was closed successfully by a perspicuous technique of posterior component separation. The awareness of this straightforward technique will allow the surgeons to do these radical procedures with confidence and without any consternation of complex reconstructive procedures.