Histopathological Findings in Hernia Sacs: A Clinical and Pathological Review

Routine histopathological examination of hernia sac in adults remains a controversial topic. We undertook a retrospective study to assess possible clinical benefits of pathological examination of hernia sac specimens. Our pathology database between 1992 and 2020 was searched for adult specimens submitted as hernia sac. The clinical and pathological data of patients with abnormal histopathological findings were reviewed. There were 5424 hernia sac specimens (3722 inguinal, 1625 umbilical, and 77 femoral), 32/5424 (0.59%) with malignancies (28 epithelial and 4 lymphoid) and 25/32 were located in the umbilical region. Twelve out of twenty-five malignancies (48%) presented as primary clinical manifestations of the diseases (5 GI tract carcinomas, 5 gynecological tract carcinomas, and 2 lymphoid neoplasms); and 13/25 (52%) specimens were involved by previously known tumors (8 gynecological carcinomas, 3 colon carcinomas, 1 breast carcinoma, and 1 lymphoma). Among the 7 inguinal hernia sacs with malignancies, 3 (42.9%) were primary presentations of the tumors (2 prostatic carcinomas, 1 pancreatic carcinoma), and 4 (57.1%) were previously known tumors (2 ovarian carcinomas, 1 colon carcinoma, 1 lymphoid). Benign lesions were 12/5424 (0.22%), including 7 adrenal rests, 4 endometriosis, and 1 inguinal sarcoidosis. The incidence of hernia sacs with malignancies was 32/5424 (0.59%), most commonly from nearby organs in gynecological tract. However distant metastases from breast were also present. Near half of the hernia sac with malignancies (15/32, 47%) presented as the first clinical manifestation. Routine histopathological examination of hernia sac in adults is recommended, since it may provide important clinical information.

Groin Pain Syndrome Italian Consensus Conference update 2023

Groin pain syndrome (GPS) is a controversial topic in Sports Medicine. The GPS Italian Consensus Conference on terminology, clinical evaluation and imaging assessment of groin pain in athletes was organized by the Italian Society of Arthroscopy in Milan, on 5 February 2016. In this Consensus Conference (CC) GPS etiology was divided into 11 different categories for a total of 63 pathologies. The GPS Italian Consensus Conference update 2023 is an update of the 2016 CC. The CC was based on a sequential, two-round online Delphi survey, followed by a final CC in the presence of all panelists. The panel was composed of 55 experts from different scientific and clinical backgrounds. Each expert discussed 6 different documents, one of which regarded the clinical and imaging definition of sports hernias, and the other 5 dealt with 5 new clinical situations thought to result in GPS. The panelists came to an agreement on the definition of a sports hernia. Furthermore, an agreement was reached, recognizing 4 of the 5 possible proposed pathologies as causes to GPS. On the contrary, the sixth pathology discussed did not find consensus given the insufficient evidence in the available scientific literature. The final document includes a new clinical and imaging definition of sports hernia. Furthermore, the etiology of GPS was updated compared to the previous CC of 2016. The new taxonomic classification includes 12 categories (versus 11 in the previous CC) and 67 pathologies (versus 63 in the previous CC).

Zwitterion mediated anti-protein adsorption on polypropylene mesh to reduce inflammation for efficient hernia repair

The effectiveness of polypropylene (PP) mesh is often compromised by severe inflammation. Engineering anti-inflammatory coatings has significant implications for PP mesh to repair unwanted hernias. Here, we presented a facile strategy to develop an anti-fouling coating consisting of zwitterionic poly(carboxybetaine methacrylate) (PCBMA), which could prohibit protein adsorption to endow PP mesh with anti-inflammatory efficacy. The incorporation of PCBMA coating had little impact on the raw features of PP mesh. While the modified mesh PCBMA-PP possessed noticeable hydrophilicity increase and surface charge reduction. The excellent lubricity and surface stability enabled PCBMA-PP to exhibit superior anti-fouling capacity, thus efficiently inhibiting the adsorption of proteins. In vivo experiments showed that incorporating the PCBMA layer could provide PP meshes with outstanding anti-inflammatory effects and tissue compatibility for repairing hernias.

Assessment of mesh shrinkage using fibroblast-populated collagen matrices: a proof of concept for in vitro hernia mesh testing

PURPOSE

This study uses free-floating contractile fibroblast-populated collagen matrices (FPCMs) to test the shrinkage of different hernia mesh products. We hope to present this model as a proof of concept for the development of in vitro hernia mesh testing-a novel technology with interesting potential.

METHODS

FPCMs were formed by seeding Human Dermal Fibroblasts into collagen gels. FPCMs were seeded with three different cell densities and cast at a volume of 500 μl into 24-well plates. Five different mesh products were embedded within the collagen constructs. Gels were left to float freely within culture media and contract over 5 days. Photographs were taken daily and the area of the collagen gel and mesh were measured. Media samples were taken at days 2 and 4 for the purposes of measuring MMP-9 release. After 5 days, dehydrated FPCMs were also examined under light and fluorescence microscopy to assess cell morphology.

RESULTS

Two mesh products-the mosquito net and large pore lightweight mesh were found to shrink notably more than others. This pattern persisted across all three cell densities. There were no appreciable differences observed in MMP-9 release between products.

CONCLUSIONS

This study has successfully demonstrated that commercial mesh products can be successfully integrated into free-floating contractile FPCMs. Not only this, but FPCMs are capable of applying a contractile force upon those mesh products-eliciting different levels of contraction between mesh products. Such findings demonstrate this technique as a useful proof of concept for future development of in vitro hernia mesh testing.

Long-term evaluation of the Hernia Compact course of the German Hernia School

INTRODUCTION

Since 2011, the German Hernia Society has developed the German Hernia School (GHS) as a standardized hernia surgery training program for younger surgeons, consisting of the Hernia Compact basic module. It is a standardized three day training program (cadaver workshop, ultrasound simulation training, and hands-on training). After 12 years of experience, a survey was conducted to evaluate the long term effect of this training.

METHOD

Using an anonymous online-questionnaire, we contacted from September 2023 to October 2023 the Hernia Compact course participants via the congress organizer "Weitmeer" and the German Hernia Society. This online questionnaire contains 18 multiple choice questions regarding participants' age, gender, professional experience, participation in other modules of the German Hernia School, the effect of the course on their daily practice and their specific interest in hernia and abdominal wall surgery.

RESULTS

A total of 146 participants responded to the anonymous online questionnaire. A majority of 132 of 146 participants (90.42%) responded that this course improved the quality of surgical and hernia training (n = 146, no missing data). 141 of 146 individuals (96.58%) recommended the course to surgical colleagues (n = 146, no missing data). There were 89.73% of participants, (n = 146, no missing data) that developed a specific interest in hernia and abdominal wall surgery after the course. For 78.08% (n = 146, no missing data) of participants hernia and abdominal wall surgery was one of the most important activities in their daily surgical practice.

CONCLUSION

The standardized Hernia Compact basic course of the German Hernia School appears to have a huge impact on the quality of hernia surgery training in Germany and Austria. It might also help generate a specific interest in hernia surgery among participants.

Does the angle of trocar insertion affect the fascial defect caused? A porcine model

INTRODUCTION

With an incidence of 0-5.2%, trocar site hernias frequently occur following laparoscopy. It is unclear to what extent the angle of trocar insertion affects the size of the fascial defect caused. Hence, we performed a porcine model.

METHODS

In October 2022, a total of five female pigs were euthanized. In alternating order, three bladeless and two bladed conical 12-mm trocars were inserted at an angle of 45° on each side for 60 min twice each pig. For this purpose, an epoxy resin handmade cuboid with a central channel that runs at an angle of 45° was used. Subsequently, photo imaging and defect size measurement took place. The results were compared with those of our previously conducted and published porcine model, in which the trocars were inserted at an angle of 90°. Effects of trocar type (bladed vs. bladeless) and angle on defect size were analyzed using a mixed model regression analysis.

RESULTS

The bladeless trocars caused statistically significant smaller defects at the fascia than the bladed (23.4 (SD = 16.9) mm2 vs. 41.3 (SD = 14.8) mm2, p < 0.001). The bladeless VersaOne trocar caused the smallest defect of 16.0 (SD = 6.1) mm2. The bladed VersaOne trocar caused the largest defect of 47.7 (SD = 10.5) mm2. The defect size of the trocars used at a 45° angle averaged 30.5 (SD = 18.3) mm2. The defect size of trocars used at a 90° angle was significantly larger, averaging 58.3 (SD = 20.2) mm2 (p = 0.007).

CONCLUSION

When conical 12-mm trocars are inserted at a 45° angle, especially bladeless ones, they appear to cause small fascial defects compared with insertion at a 90° angle. This might lead also to a lower rate of trocar hernias. Bladeless trocars might cause smaller fascial defects than bladed trocars.

Outcomes and Proportions of Subsequent Contralateral Sports Hernia Repair Following Primary Unilateral Repair

BACKGROUND

In the event that nonoperative treatment for sports hernia fails, surgical repair may be warranted. Bilateral repair can occur in up to 45% of surgically treated patients.

PURPOSE

To investigate the clinical outcomes of athletes who underwent unilateral sports hernia repair and determine the proportion of patients who required contralateral sports hernia repair.

STUDY DESIGN

Case series; Level of evidence, 4.

METHODS

We identified patients at our institution who underwent primary unilateral sports hernia repair (rectus abdominis-adductor longus aponeurotic plate repair and adductor lengthening) with a single surgeon between 2015 and 2020. We assessed patient-reported outcomes using the Hip Outcome Score-Sport (HOS-Sport), the Numeric Pain Rating Scale, and an internally developed return-to-play questionnaire. We further collected data regarding subsequent sports hernia procedures on the ipsilateral or contralateral side. We calculated summary statistics for outcomes and examined the association between preinjury patient characteristics and the HOS-Sport score at follow-up or successful return to preinjury sport using linear and logistic regression, respectively.

RESULTS

A total of 104 of 128 (81.3%) eligible patients (mean age at surgery, 23.0 ± 6.2 years; 94.2% male; 51.9% American football athletes) completed follow-up at a mean time of 4.4 ± 1.5 years. Overall, 79.8% of athletes (n = 83) were able to return to their preinjury sport/activity, but 90.2% (83/92) who attempted to return were able to do so. When examining reasons for not returning to preinjury sport, only 9 patients reported not returning to preinjury sport because of limitations or persistent symptoms from their original injury. Only 4 patients underwent subsequent sports hernia procedures (3 contralateral, 1 ipsilateral revision) after their index unilateral sports hernia repair. At follow-up, the mean HOS-Sport score was high (94.0 ± 10.8), and the mean Numeric Pain Rating Scale score was low (0.31 ± 1.26). There were no preinjury patient characteristics associated with either the HOS-Sport score at follow-up or the successful return to preinjury sport.

CONCLUSION

Patients with unilateral sports hernia symptoms can undergo repair and return to sport at the preinjury level with little concern for injuries to the contralateral groin. In our cohort, patient-reported hip function and pain outcomes at follow-up were excellent.

Review of the Evaluation of Pulmonary Hypoplasia as an Important Determinant of Clinical Outcomes in Infants with Congenital Diaphragmatic Hernia

Pulmonary hypoplasia is one of main causes of neonatal mortality and morbidity in patients with congenital diaphragmatic hernia. With most cases diagnosed prenatally, the emphasis is put on prediction of the severity of this defect. Several attempts are made to reduce the mortality and provide optimal prenatal and postnatal care. Appropriate estimation of risk of pulmonary hypoplasia also provides an important inclusion criterion for prenatal intervention. The main tool used for the detection and prediction of pulmonary hypoplasia is ultrasound, with an increasing number of available formulas to estimate the risk of occurrence of this phenomenon and complication associated with it. For most of the formulas used in this measurement method, the main limitations are either gestational-age dependency or limited research. Other imaging methods used to assess the risk of pulmonary hypoplasia involve magnetic resonance imaging and vascular assessment of affected lungs. The limitation in these remains the limited accessibility. Currently, the most widely used indexes are observed-to-expected lungs-to-head ratio and presence of liver herniation. These are the 2 most commonly used measurement methods, as they are the basis for patient qualification for fetoscopic endoluminal tracheal occlusion. This article aims to review the evaluation of pulmonary hypoplasia or hypoplastic lung disease as an important determinant of clinical outcomes in infants with congenital diaphragmatic hernia. In this review, we emphasize the importance of early prenatal diagnosis of congenital diaphragmatic hernia and present a summary of different methods of prenatal risk assessment of lung hypoplasia in congenital diaphragmatic hernia.

Polysaccharide-Based Coating with Excellent Antibiofilm and Repeatable Antifouling-Bactericidal Properties for Treating Infected Hernia

In recent years, the utilization of medical devices has gradually increased and implantation procedures have become common treatments. However, patients are susceptible to the risk of implant infections. This study utilized chemical grafting to immobilize polyethylenimine (QPEI) and hyaluronic acid (HA) on the surface of the mesh to improve biocompatibility while being able to achieve antifouling antimicrobial effects. From the in vitro testing, PP-PDA-Q-HA exhibited a high antibacterial ratio of 93% against S. aureus, 93% against E. coli, and 85% against C. albicans. In addition, after five rounds of antimicrobial testing, the coating continued to exhibit excellent antimicrobial properties; PP-PDA-Q-HA also inhibits the formation of bacterial biofilms. In addition, PP-PDA-Q-HA has good hemocompatibility and cytocompatibility. In vivo studies in animal implantation infection models also demonstrated the excellent antimicrobial properties of PP-PDA-Q-HA. Our study provides a promising strategy for the development of antimicrobial surface medical materials with excellent biocompatibility.

Relationship between intraperitoneal pressure and the development of hernias in peritoneal dialysis: confirmation for the first time of a widely accepted concept

BACKGROUND

Intraperitoneal pressure (IPP) in peritoneal dialysis (PD) is an individual characteristic that can be modified by posture and intraperitoneal volume (IPV). It is considered one of the predisposing factors for complications in the abdominal wall, such as the appearance of hernias. No studies to date have confirmed this. The main aim of this study was to assess the relationship between the development of hernia in incident PD patients and IPP measured at PD onset.

METHODS

A prospective observational study of incident patients in a PD programme between 2010 and 2020. IPP was measured using the Durand's method.

RESULTS

One hundred and twenty-four incident patients on PD, 68% male, mean age 62.1 ± 15.23 years, body mass index (BMI) 27.7 ± 4.82 kg/m2, 44% were diabetic. IPP in supine was 16.6 ± 4.60 cm H2O for a mean IPV of 2047.1 ± 359.19 mL. Hernias were reported in 18.5% of patients during PD follow-up: 57% were inguinal hernias, 33% umbilical, and a further 10% presented in a combined form. PD hernias correlated positively with IPP in supine position (p = 0.037), patient age (p = 0.008), BMI (p = 0.043), a history of prior hernia (0.016), laparoscopic catheter placement (p = 0.026), and technique failure (p = 0.012). In the multivariate analysis, a higher IPP was independently related to the development of hernias (p = 0.028).

CONCLUSIONS

The development of hernias in PD was related to a higher IPP at PD onset, older age, higher BMI, history of prior hernia, catheter placement by laparoscopy, and technique failure.

Telephone assessment of new hernia referrals-is it possible?

PURPOSE

Utilisation of remote clinics is increasing in healthcare settings worldwide. During the height of the COVID pandemic, our UK-based teaching hospital has trialled telephone assessment for new patients presenting with primary hernias. Selected cases are listed for elective repair of primary hernia direct from telephone clinic assessment. In March 2021, after this process had been in place for 13 months, departmental triage criteria were introduced, allocating patients to initial assessment in Face to Face or Telephone Clinics. Here, we evaluate the effectiveness of telephone assessment, with specific attention to 'Day of Surgery' cancellation. We also assess the effect of our triage criteria on rate of 'Day of Surgery' cancellation.

METHODS

Departmental diaries were studied retrospectively to identify patients listed for hernia repair between February 2020 and February 2022. Data were obtained from clinic letters, discharge paperwork and operating lists, as well as from management teams. Fishers Exact test was used to compare groups seen either face to face or remotely as well and pre- and post-intervention.

RESULTS

325 patients were listed for hernia repair, 56 after telephone assessment. 6 (11%) of those listed from telephone clinic were cancelled on the day of surgery, compared with 34 (13%) of those seen face to face. With triage criteria in place, listing from telephone clinic increased significantly from 14 to 27%. Overall day of surgery cancellations reduced from 13 to 9%. Rate of day of surgery cancellation in those assessed in telephone clinic reduced from 12 to 9%.

CONCLUSIONS

There is no significant difference between day of surgery cancellations after face to face or telephone clinic assessment. Triage criteria for telephone assessment appear to increase the numbers being listed after remote clinics. This did not significantly impact the number of day of surgery cancellations.

Predictors of acute incisional hernia incarceration at initial hernia diagnosis on computed tomography

BACKGROUND

Acute incisional hernia incarceration is associated with high morbidity and mortality yet there is little evidence to guide which patients will benefit most from prophylactic repair. We explored baseline computed tomography (CT) characteristics associated with incarceration.

METHODS

A case-control study design was utilized to explore adults (≥18 years) diagnosed with an incisional hernia between 2010 and 2017 at a single institution with a 1-year minimum follow-up. Computed tomography imaging at the time of initial hernia diagnosis was examined. Following propensity score matching for baseline characteristics, multivariable logistic regression was performed to identify independent predictors associated with acute incarceration.

RESULTS

A total of 532 patients (27.26% male, mean 61.55 years) were examined, of whom 238 experienced an acute incarceration. Between two well-matched cohorts with and without incarceration, the presence of small bowel in the hernia sac (odds ratio [OR], 7.50; 95% confidence interval [CI], 3.35-16.38), increasing sac height (OR, 1.34; 95% CI, 1.10-1.64), more acute hernia angle (OR, 0.98 per degree; 95% CI, 0.97-0.99), decreased fascial defect width (OR, 0.68; 95% CI, 0.58-0.81), and greater outer abdominal fat (OR, 1.28; 95% CI, 1.02-1.60) were associated with acute incarceration. Using threshold analysis, a hernia angle of <91 degrees and a sac height of >3.25 cm were associated with increased incarceration risk.

CONCLUSION

Computed tomography features present at the time of hernia diagnosis provide insight into later acute incarceration risk. Improved understanding of acute incisional hernia incarceration can guide selection for prophylactic repair and thereby may mitigate the excess morbidity associated with incarceration.

LEVEL OF EVIDENCE

Prognostic and Epidemiological; Level III.

Fabrication of green composite hand knitted silk mesh reinforced with silk hydrogel

Soft tissue defects like hernia and post-surgical fistula formation can be resolved with modern biomaterials in the form of meshes without post-operative complications. In the present study hand knitted silk meshes were surface coated with regenerated silk fibroin hydrogel and pure natural extracts. Two phytochemicals (Licorice extract (LE) and Bearberry extract (BE)) and the two honeybee products (royal jelly (RJ) and honey (HE)) were incorporated separately to induce antibacterial, anti-inflammatory, and wound healing ability to the silk hydrogel coated knitted silk meshes. Meshes were dip coated with a blend of 4 % silk hydrogel (w/v) and 5 % extracts. Dried modified meshes were characterized using SEM, DMA, GC-MS and FTIR. Antimicrobial testing, in-vitro cytotoxicity, in-vitro wound healing and Q-RT-PCR were also performed. SEM analysis concluded that presence of coating reduced the pore size up to 47.7 % whereas, fiber diameter was increased up to 17.9 % as compared to the control. The presence of coating on the mesh improved the mechanical strength/Young's modulus by 1602.8 %, UTS by 451.7 % and reduced the % strain by 51.12 %. Sustained release of extracts from MHRJ (62.9 % up to 72 h) confirmed that it can induce antibacterial activity against surgical infections. Cytocompatibility testing and gene expression results suggest that out of four variables MHRJ presented best cell viability, % wound closure and expression of wound healing marker genes. In-vivo analyses in rat hernia model were carried out using only MHRJ variant, which also confirmed the non- toxic nature and wound healing characteristics of the modified mesh. The improved cell proliferation and activated wound healing in vitro and in vivo suggested that MHRJ could be a valuable candidate to promote cell infiltration and activate soft tissue and hernia repair as a biomedical implant.

Incidence, natural history and predictive factors - A single center study

PURPOSE

Parastomal hernia (PH) is one of the most frequent complications after stoma creation. Our objective was to analyze the incidence, evolution and predictive factors of PH in Bricker-type urinary diversion.

PATIENTS AND METHODS

Case series analysis of 125 patients submitted to radical cystectomy and ileal conduit diversion for cancer in a single center during 2006-2021. Patient's record and imaging tests were reviewed to identify those suffering PH. Moreno-Matías classification was used to define radiological PH (rPH). Demographic and preoperative characteristics of the patients, surgical details and postoperative complications were recorded. Univariate and multivariate analyses were conducted to determine the effect of each predictive variable on the development and progression of PH.

RESULTS

21.6% of patients developed PH (median follow-up 37 months). Incidence increased with follow-up time (15.2% at 1 year, 20.8% at 2 years). BMI ≥ 25 (Expβ 8.31, 95% CI 1.06- 65.18, p = 0.04), previous midline laparotomy (Expβ 6.74, 95% CI 1.14-39.66, p = 0.04) and wound infection (Expβ 3.87, 95% CI 1.21-12.33, p = 0.02) were significantly associated with PH. Half of the patients with hernia had symptoms, 25.9% requiring surgical correction. 46% of type 1 hernias and 40% of type 2 hernias progressed to grade 3 with a median of 11 months. No variable was associated with radiological progression.

CONCLUSIONS

This study proved 3 independent factors (overweight, laparotomy and wound infection) that increase the risk of developing PH.

Maternal and neonatal consequences of cystocele and rectocele in the delivery process

The study aimed to investigate the effects of cystocele and rectocele on the stages of vaginal birth and maternal and newborn outcomes. A total of 672 multiparous pregnant women between the ages of 18 to 40 who underwent normal vaginal delivery in our tertiary center between November 2022 and February 2023, were included in this prospective study. Among the participants, 348 (51.8%) had no abnormalities, 78 (11.6%) had rectocele only, 112 (16.7%) had cystocele only, and 134 (19.9) had both cystocele and rectocele. Patients with the coexistence of cystocele and rectocele experienced a notably extended duration for both the first stage and second stage of labor, although the extension in the second stage was not statistically significant. Among the maternal complications, the development of maternal laceration and chorioamnionitis was significantly more common in the patient group with cystocele and rectocele compared to the other groups. When the groups were assessed for postpartum bleeding, while the bleeding risk increased from the normal group to the rectocele + cystocele group, this increase was not statistically significant. There was no difference between the groups in terms of neonatal outcomes. The delivery time of pregnant women with cystocele and rectocele, in the absence of additional risk factors, was determined to be significantly longer than that of the control group. We think that these patients should receive more vigilant monitoring, and this criterion should be kept in mind when assessing the indication for a cesarean section.

Hernia Active Living Trial (HALT): an exercise intervention in people with a parastomal hernia or bulge

BACKGROUND

Parastomal hernias are a common consequence of stoma surgery and can occur in up to 50% of patients. They are mangaged either conservatively, through support hosiery, or surgically. A patient feasibility study called the Hernia Active Living Trial (HALT) was designed to examine if a clinical pilates-based exercise programme offers an alternative approach to managing a parastomal hernia or bulge.

METHOD

Adults with an ileostomy or colostomy who perceived they had a bulge around their stoma were included in the study. The intervention included up to 12 online sessions of an exercise booklet and videos with an exercise specialist. Interviews were conducted to explore participants' experiences of the intervention. The interview data were analysed systematically and thematically. Participants were also asked to complete patient diaries every week.

RESULTS

Twelve of the 13 participants who completed the intervention agreed to be interviewed. Following analysis, three main themes emerged including managing a hernia/bulge, benefits and barriers. Participants talked about the benefits of this programme including: reduction of the size of their hernia, increased abdominal control, body confidence and posture, as well as increased physical activity levels. The barriers described were generally overcome allowing participants to engage in what was perceived to be a positive and potentially life-changing experience.

CONCLUSIONS

A clinical pilates-based exercise programme for people with a parastomal hernia can bring both direct and indirect improvements to a patient's hernia management, sense of wellbeing and day-to-day life. Individuals with a hernia should be informed about the need for, and value of, exercise to strengthen core muscles, as part of their non-surgical options for self-management.

Effect of retrieval bags in preventing surgical site wound infection during elective laparoscopic cholecystectomy in liver cancer patients: A meta-analysis

A meta-analysis research was implemented to appraise the effect of retrieval bags (RBs) in preventing surgical site wound infection (SSWI) in elective laparoscopic cholecystectomy (ELC) in liver cancer (LC) patients. Inclusive literature research until April 2023 was done, and 1273 interconnected researches were reviewed. From a total of 11 researches that were chosen, 2559 ELC procedures in LC patients were at the starting point of the researches: 1273 of them were utilising RBs and 1286 were controls. Odds ratio (OR) and 95% confidence intervals (CIs) were utilised to appraise the consequence of RBs in preventing SSWI in ELC in LC patients by the dichotomous approach and a fixed or random model. RBs had significantly lower SSWI (OR, 0.54; 95% CI, 0.38-0.76, p < 0.001) compared with controls in ELC in LC patients. However, no significant difference was found between RBs and controls in ELC in LC patients in bile spillage (OR, 0.51; 95% CI, 0.21-1.24, p = 0.14), fascial extension (OR, 0.54; 95% CI, 0.07-4.11, p = 0.55), postoperative collection (OR, 0.66; 95% CI, 0.24-1.76, p = 0.40) and port site hernia (OR, 0.72; 95% CI, 0.25-2.06, p = 0.54). RBs had significantly lower SSWI, and no significant difference was found in bile spillage, fascial extension, postoperative collection and port site hernia compared with controls in ELC in LC patients. However, caution needs to be taken when interacting with its values because there was a low sample size in some of the chosen researches and a low number of researches were found for some of the comparisons in the meta-analysis.

Evaluation of hernia surgical meshes sterilised with ethylene oxide for adoption under UK regulations

BACKGROUND

Low-cost meshes (LCM) have been successfully used in low-income countries (LIC) over the past decades, demonstrating comparable surgical outcomes to commercial meshes at a fraction of the cost. However, LIC sterilisation standards (autoclave sterilisation at 121 °C) do not meet UK regulations for medical devices, which require either ethylene oxide (EO) sterilisation or steam sterilisation at 134 °C. Therefore, the aim of this study was to sterilise UK LCM and characterise their mechanical properties and in vitro biocompatibility to verify whether EO sterilisation causes changes in the mechanical properties and biocompatibility of LCM.

METHODS

EO sterilised LCM were used. Uniaxial tensile tests were performed to measure mechanical properties. Biocompatibility was measured through viability and morphology of Human Dermal Fibroblasts (HDFs) cultured in mesh-conditioned media, and by calculating the metabolic activity and proliferation of HDFs attached on the meshes, with alamarBlue assay.

RESULTS

Break stress of LCM1 was significantly higher than LCM2 (p < 0.0001), while Young's modulus of LCM1 was significantly lower than LCM2 (p < 0.05) and there was no significant difference in break strain. Viability and morphology showed no significant difference between LCM and control. Attachment and proliferation of HDFs on LCM showed a better proliferation on LCM2 than LCM1, with values similar to the control at the final time point.

CONCLUSIONS

We demonstrated that EO sterilisation affects LCM mechanical properties, but they still have values closer to the native tissues than the commercially available ones. We also showed that in vitro biocompatibility of LCM2 is not affected by EO sterilisation, as HDFs attached and proliferated on the mesh, while EO affected attachment on LCM1. A more detailed cost analysis of the potential savings for healthcare systems around the world needs to be performed to strengthen the cost-effectiveness of this frugal innovation.

Quality of life in patients with a perineal hernia

INTRODUCTION

Patients who develop a perineal hernia after abdominoperineal resection may experience discomfort during daily activities and urogenital dysfunction, but the impact on quality of life has never been formally assessed.

MATERIALS AND METHODS

Patients who underwent abdominoperineal resection for rectal cancer between 2014 and 2022 in two prospective multicenter trials were included. Primary outcome was defined as median overall scores or scores on functional and symptom scales of the following quality of life questionnaires: 5-level version of the 5-dimensional EuroQol, Short Form-36, and European Organization for Research and Treatment of Cancer QoL Questionnaire Colorectal cancer 29 and 30, Urogenital Distress Inventory-6, Incontinence Impact Questionnaire-7.

RESULTS

Questionnaires were available in 27 patients with a perineal hernia and 62 patients without a perineal hernia. The 5-dimensional EuroQol score was significantly lower in patients with a perineal hernia (83 vs 87, p = 0.048), which implies a reduced level of functioning. The median scores of pain-specific domains were significantly worse in patients with a perineal hernia as measured by the SF-36 (78 vs. 90, p = 0.006), the EORTC-CR29 (17 vs. 11, p=<0.001) and EORTC-C30 (17 vs. 0, p = 0.019). Also, significantly worse physical (73 vs. 100, p = 0.049) and emotional (83 vs. 100, p = 0.048) functioning based on EORTC-C30 was observed among those patients. Minimally important differences were found for role, physical and social functioning of the SF-36 and EORTC-C30. The urological function did not differ between the groups.

CONCLUSION

A symptomatic perineal hernia can significantly worsen quality of life on several domains, indicating the severity of this complication.

Characterization of the robotic surgery experience in minimally invasive surgery fellowships from 2010 to 2021

BACKGROUND

Robotic surgery has experienced exponential growth in the past decade. Few studies have evaluated the impact of robotics within minimally invasive surgery (MIS) fellowship training programs. The purpose of our study was to examine and characterize recent trends in robotic surgery within MIS fellowship training programs.

METHODS

De-identified case log data from the Fellowship Council from 2010 to 2021 were evaluated. Percentage of operations performed with robot assistance over time was assessed and compared to the laparoscopic and open experience. Case logs were further stratified by operative category (e.g., bariatric, hernia, foregut), and robotic experience over time was evaluated for each category. Programs were stratified by percent robot use and the experience over time within each quartile was evaluated.

RESULTS

MIS fellowship training programs with a robotic platform increased from 45.1% (51/113) to 90.4% (123/136) over the study period. The percentage of robotic cases increased from 2.0% (1127/56,033) to 23.2% (16,139/69,496) while laparoscopic cases decreased from 80.2% (44,954/56,033) to 65.3% (45,356/69,496). Hernia and colorectal case categories had the largest increase in robot usage [hernia: 0.7% (62/8614) to 38.4% (4661/12,135); colorectal 4.2% (116/2747) to 31.8% (666/2094)]. When stratified by percentage of robot utilization, current (2020-2021) programs in the > 95th percentile performed 21.8% (3523/16,139) of robotic operations and programs in the > 50th percentile performed 90.0% (14,533/16,139) of all robotic cases. The median number of robotic cases performed per MIS fellow significantly increased from 2010 to 2021 [0 (0-6) to 72.5 (17.8-171.5), p < 0.01].

CONCLUSIONS

Robotic use in MIS fellowship training programs has grown substantially in the past decade, but the laparoscopic and open experience remains robust. There remains an imbalance with the top 50% of busiest robotic programs performing over 90% of robot trainee cases. The experience in MIS programs varies widely and trainees should examine program case logs closely to confirm parallel interests.

Spinal cord ischemia revealed by a Brown-Sequard syndrome and caused by a calcified thoracic disc extrusion with spontaneous regression: a case report and review of the literature

BACKGROUND

Thoracic disc herniation is relatively uncommon, accounting for less than 1% of all spinal herniations. Although most often asymptomatic, they may represent a rare cause of spinal cord ischemia.

CASE REPORT

We report the case of a healthy 43-year-old North African male who presented with a Brown-Sequard syndrome revealing a spinal cord ischemia caused by a thoracic disc extrusion. The initial MRI revealed a calcified disc extrusion at the level of T5-T6 without significant spinal cord compression or signal abnormality. A pattern consistent with a medullary ischemia only appeared 48 h later. The patient was treated conservatively with Aspirin and Heparin, which were discontinued later because of a negative cardiovascular work-up. The calcified disc extrusion, which was later recognized as the cause of the ischemia, decreased spontaneously over time and the patient recovered within a few months.

CONCLUSIONS

Our case highlights the challenge in diagnosing and managing this uncommon condition. We propose a literature review showing the different therapeutic strategies and their corresponding clinical outcomes.

A preliminary In Vitro viability study of an electrically active hernia mesh on mouse fibroblasts

Hernias occur when part of an organ, typically the intestines, protrudes through a disruption of the fascia in the abdominal wall, leading to patient pain, discomfort, and surgical intervention. Over one million hernia repair surgeries occur annually in the USA, but globally, hernia surgeries can exceed 20 million. Standard practice includes hernia repair mesh to help hold the compromised tissue together, depending on where the fascial disruption is located and the patient's condition. However, the recurrence rate for hernias after using the most common type of hernia mesh, synthetic, is currently high. Physiological-level electrical stimulation (ES) has shown beneficial effects in improving healing in soft tissue regeneration. Piezoelectric materials can produce low-level electrical signals from mechanical loading to help speed healing. Combining the novelty of piezo elements to create an electrically active hernia repair mesh for faster healing prospects is explored in this study through simulated transcutaneous mechanical loading of the piezo element with therapeutic ultrasound. A tissue phantom was developed using Gelatin #0 and Metamucil® to better simulate a clinical application of the therapeutic ultrasound loading modality. The cellular viability of varying ultrasound intensities and temporal effects was analyzed. Overall, minimal cytotoxicity was observed across all experimental groups during the ultrasound intensity and temporal viability studies.

How I do it: simplified craniotomy for acute subdural hematoma in the elderly

CONTEXT

Acute subdural hematoma (ASH) is responsible for significant morbidity and mortality in the elderly. As military neurosurgeons, we perform a simplified technique using a linear skin incision and a small craniotomy bone flap in order to ease perioperative tolerance.

METHODS

The patient lies supine, a pad under the shoulder ipsilateral to the ASH, the head completely rotated on the other side and placed on a circular pad, without head clamp. The linear frontotemporal skin incision should be twice the size of the bone flap's diameter, allowing to access the whole subdural space. Care is taken to obtain complete decompression of the temporal fossa in order to alleviate uncal herniation. A subdural drain can be placed, and the subdural space is filled with warm saline solution in order to create a closed drainage system.

CONCLUSION

The patient is allowed to sit at postoperative day 1 and to walk at postoperative day 2. Simplified craniotomy for ASH allows to reduce operative time and provides faster functional recovery.

First Global Report of Catastrophic Results Due to Internal Herniation of Roux Limb in the Space Between the Gastric Pouch and Band: a Series of 3 Cases of Banded Roux-en-Y Gastric Bypass (BRYGB)

BACKGROUND

Banded Roux-en-Y gastric bypass (BRYGB) is associated with complications known with the bypass along with specific complications related to the band. Roux-limb gangrene, due to herniation between the gastric pouch and band, however, has no mention in literature.

METHODS

We report this potentially fatal complication of BRYGB and its management in a series of 3 patients.

RESULTS

All 3 patients were women, 35-45 years, with a BRYGB (roux limb-150 cm, biliopancreatic limb-100 cm) using a MiniMizer or a Fobi ring with 2-point fixation to the gastric pouch 2 cm above the gastrojejunostomy. All patients presented 3-4 years post-BRYGB, with an average total body weight loss (TWL%) of 41.28%. To discuss video of a single case, a 35-year-old female presented with abdominal pain, hematemesis and signs of abdominal tenderness and guarding. X-Ray abdomen showed distended small bowel loops and CT-scan revealed ischemic small bowel loops with free fluid. Diagnostic laparoscopy showed alimentary/roux limb (AL) gangrene, from the gastrojejunostomy to the jejunojejunostomy. The entire AL had herniated between the gastric pouch and band which had formed an obstructive ring around the herniated bowel loop and led to compromise of blood supply and gangrene. Resection of gangrenous bowel with reversal of BRYGB was done.

CONCLUSION

Early diagnosis and timely management may save a patient from gangrene. It also raises questions: Is a 2-point fixation of the band to the gastric pouch insufficient? Does a longer roux limb make it prone to herniating in the space between the gastric pouch and band?

[Effects of the anterolateral thigh chimeric perforator flaps in repairing complex wounds of foot and ankle]

Objective: To investigate the effects of anterolateral thigh chimeric perforator flap in repairing complex wounds of foot and ankle. Methods: A retrospective observational study was conducted. From May 2018 to June 2022, 23 patients who met the inclusion criteria were admitted to the First Affiliated Hospital of Air Force Medical University to repair complex wounds of foot and ankle with anterolateral thigh chimeric perforator flaps, including 15 males and 8 females, aged from 20 to 66 years. The wounds were all accompanied by bone exposure and defects, and were complicated with varying degrees of infection. All patients underwent debridement and continuous vacuum sealing drainage treatment for 1 week in stage Ⅰ, with the skin and soft tissue defect area after debridement being 10 cm×5 cm to 22 cm×7 cm. In stage Ⅱ, the anterolateral thigh chimeric perforator flap was used to cover the defective wound, of which the muscle flap was used to fill the deep invalid cavity of the ankle joint or cover bone and internal fixation exposures, and the skin flap was used to cover the superficial wound, with the area of the skin flap ranging from 11 cm×6 cm to 23 cm×8 cm, and the area of the muscle flap ranging from 4.0 cm×2.5 cm to 8.0 cm×5.0 cm. The survival of the flap was observed after operation. During follow-up, the color, texture, appearance, and complications of the flap were observed, the function of ankle joint and its range of dorsiflexion motion and plantar flexion motion were measured, and the scar hyperplasia and muscular hernia in donor area were observed. Results: Ecchymosis and epidermal necrosis occurred at the tip of the flap in 1 patient on 5 days after operation and healed after dressing change for 1 week; the other flaps of patients survived successfully. After 6 to 40 months of follow-up, the color, texture, and shape of flaps were good, but 1 patient was not satisfied with the shape of the flap because of flap swelling; the ankle joint movement was basically normal, the dorsiflexion motion was 15-30°, and the plantar flexion motion was 20-45°; the scar hyperplasia in the donor area of the flap was not obvious, and no muscular hernia occurred. Conclusions: The anterolateral thigh chimeric perforator flap can effectively fill the deep invalid cavity of ankle joint and cover the superficial wound at the same time, with minimal damage to the donor site. So it is an ideal flap for repairing the complex wounds of foot and ankle.

5-Year Collis-Nissen Gastroplasty Outcomes for Type III-IV Hiatal Hernia with Short Esophagus: A Prospective Observational Study

BACKGROUND

To assess the 5-year outcomes of patients undergoing Collis-Nissen gastroplasty for type III-IV hiatal hernia with short esophagus.

STUDY DESIGN

From a prospective observational cohort of patients who underwent antireflux surgery for type III-IV hiatal hernia between 2009 and 2020, those with short esophagus (abdominal length <2.5 cm) in whom a Collis-Nissen procedure was performed and reached at least 5 years of follow-up were identified. Hernia recurrence, patients' symptoms, and quality of life were assessed annually by barium meal x-ray, upper endoscopy, and validated symptoms and Quality of Life in Reflux and Dyspepsia (QOLRAD) questionnaires.

RESULTS

Of the 114 patients with Collis-Nissen gastroplasty, 80 patients who completed a 5-year follow-up were included (mean age 71 years). There were no postoperative leaks or deaths. Recurrent hiatal hernia (any size) was identified in 7 patients (8.8%). Heartburn, regurgitation, chest pain, and cough were significantly improved at each follow-up interval (p < 0.05). Preoperative dysphagia disappeared or improved in 26 of 30 patients, while new-onset dysphagia occurred in 6. Mean postoperative QOLRAD scores significantly improved at all dimensions (p < 0.05).

CONCLUSIONS

Collis gastroplasty combined with Nissen fundoplication provides low hernia recurrence, good control of symptoms, and improved quality of life in patients with large hiatal hernia and short esophagus.

Outcomes of Immediate Multistaged Abdominal Wall Reconstruction of Infected Mesh: Predictors of Surgical Site Complications and Hernia Recurrence

BACKGROUND

Mesh infection is one of the most devastating complications after ventral hernia repair. To date, no clear consensus exists on the optimal timing of definitive abdominal wall reconstruction (AWR) after excision of infected mesh. We evaluated outcomes of immediate multistaged AWR in patients with mesh infection.

METHODS

We performed a retrospective review of patients with mesh infection who underwent immediate, multistaged AWR, which consisted of exploratory laparotomy with debridement and mesh explantation, followed by definitive AWR during the same admission. Primary outcomes included hernia recurrence and surgical site occurrences, defined as wound dehiscence, surgical site infection, hematoma, and seroma.

RESULTS

Forty-seven patients with infected mesh were identified. At mean follow-up of 9.5 months, 5 patients (10.6%) experienced hernia recurrence. Higher body mass index (P = 0.006), bridge repair (P = 0.035), and postoperative surgical site infection (P = 0.005) were associated with hernia recurrence.

CONCLUSION

Immediate multistaged AWR is an effective surgical approach in patients with infected mesh.

Devices in Hernia Surgery

Despite the heavy reliance of surgeons on mesh with which to repair hernias, less attention is paid to the technical specifications of mesh and/or regulatory processes for bringing medical devices to market during surgical training. This article summarizes some of the key controversies and points regarding mesh materials and regulatory processes related to mesh devices.

Hernia Mesh Complications: Management of Mesh Infections and Enteroprosthetic Fistula

The potential consequences of mesh infection mandate careful consideration of surgical approach, mesh selection, and preoperative patient optimization when planning for ventral hernia repair. Intraperitoneal mesh, microporous or laminar mesh, and multifilament mesh typically require explantation, whereas macroporous, monofilament mesh in an extraperitoneal position is often salvageable. Delayed presentation of mesh infection should raise the suspicion for enteroprosthetic fistula when intraperitoneal mesh is present. When mesh excision is necessary, the surgeon must carefully consider both the risk of recurrent infection as well as hernia recurrence when deciding on single-stage definitive reconstruction versus primary closure with delayed reconstruction.

TRAUMATIC PULMONARY HERNIATION: A RARE CHEST TRAUMA MANIFESTATION

Traumatic pulmonary hernia is an uncommon occurrence resulting from chest trauma, typically covered by the skin. Chest trauma may arise from penetrating or blunt mechanisms, with blunt trauma being more frequently observed. When lung herniation transpires, various symptoms such as chest pain, dyspnea, subcutaneous emphysema, bone crepitation, and hemoptysis (in cases of lung parenchymal damage) may manifest. We present the case of a 66-year-old woman suffering from chest pain and dyspnea after blunt chest trauma due to a fall induced by delirium following alcohol abuse.

Pelvic floor imaging in asymptomatic subjects

AIM

The aim of this work was to determine the range of normal imaging features during total pelvic floor ultrasound (TPFUS) (transperineal, transvaginal, endovaginal and endoanal) and defaecation MRI (dMRI).

METHOD

Twenty asymptomatic female volunteers (mean age 36.5 years) were prospectively investigated with dMRI and TPFUS. Subjects were screened with symptom questionnaires (ICIQ-B, St Mark's faecal incontinence score, obstructed defaecation syndrome score, ICIQ-V, BSAQ). dMRI and TPFUS were performed and interpreted by blinded clinicians according to previously published methods.

RESULTS

The subjects comprised six parous and 14 nulliparous women, of whom three were postmenopausal. There were three with a rectocoele on both modalities and one with a rectocoele on dMRI only. There was one with intussusception on TPFUS. Two had an enterocoele on both modalities and one on TPFUS only. There were six with a cystocoele on both modalities, one on dMRI only and one on TPFUS only. On dMRI, there were 12 with functional features. Four also displayed functional features on TPFUS. Two displayed functional features on TPFUS only.

CONCLUSION

This study demonstrates the presence of abnormal findings on dMRI and TPFUS without symptoms. There was a high rate of functional features on dMRI. This series is not large enough to redefine normal parameters but is helpful for appreciating the wide range of findings seen in health.

Case report and review of the literature

Objectives

To report a case of prenatal diagnosis of ectopic intrathoracic kidney with diaphragmatic hernia managed surgically after birth, and to conduct a review of the literature on prenatal diagnosis of ectopic intrathoracic kidney and perinatal prognosis.

Material and methods

We report the case of a 28-week fetus in which, on ultrasound imaging, a mass was observed displacing the heart and lung in the right hemithorax, which was was confirmed by magnetic resonance (MR) to be an ectopic intrathoracic kidney (ITEK). After birth, the neonate was approached by laparoscopy to place a mesh in continuity with the diaphragm, leaving the kidney in the abdomen, with good evolution. A search was conducted in the PubMed, Embase and Cochrane databases for cohorts, case reports and case series of prenatal diagnosis of intrathoracic kidney in the fetus. Information was retrieved regarding design, population, imaging diagnosis, treatment and prognosis.

Results

The search identified 8 studies that met the inclusion criteria, reporting a total of 8 cases. Ultrasound diagnosis showed ectopic intrathoracic kidney associated with diaphragmatic hernia in all the subjects. Fetal magnetic resonance imaging (MRI) was also used in 5 cases.

Conclusions

Ectopic intrathoracic kidney is a congenital abnormality amenable to prenatal diagnosis. Survival after corrective surgery performed in the neonatal period is common. There is a paucity of publications, limited to case reports, regarding the prenatal diagnosis of this condition.

Experimental evaluation of the use of starch and carboxymethylcellulose in the prevention of intraperitoneal adhesions in hernia surgery with coated meshes

PURPOSE

Laparoscopic hernia repair involves a risk of adhesion between coated mesh and viscera. Plant polysaccharides such as starch and carboxymethylcellulose (SC) make up a product that acts as a barrier and prevents intraperitoneal adhesions. This study aimed to evaluate whether topical SC can also reduce adhesions between mesh and intra-abdominal organs.

METHODS

Forty rats each received placement of two intraperitoneal mesh fragments, one on each side of the abdominal wall. Randomly, 20 animals received SC on the right and other 20 on the left, leaving the contralateral side as a control. Fourteen days after the surgery, the animals underwent an additional laparotomy in which macroscopic analysis was performed.

RESULTS

As for the percentage of the mesh area affected by adhesion, one (2.6%) animal had > 75% adhesion on the experimental side, and 11 animals (28.9%) on the control side. The adhesion intensity score showed firm adhesions in three (7.9%) animals on the experimental side and nine (23.7%) on the control side.

CONCLUSIONS

The use of SC decreased the intensity of adhesions and the surface area of the mesh affected by adhesions. There was no negative interference of the product in the incorporation of the mesh into the abdominal wall.

Parastomal hernia: an overview

Parastomal hernia (PH) is one of the most frequent ostomy complications, and the reported incidence in the literature is highly variable. As highlighted by the Association of Stoma Care Nurses UK, this complication develops mainly in children and older men over 70, but many predisposing factors are related to the individual patient and surgery. There is no standardised system for assessing PH. The main assessment techniques include objective examination, ultrasound scan and computed tomography. Prevention is based on various interventions by surgeons and stoma care nurses (SCNs). The SCN's primary interventions include accurate patient evaluation, pre-operative ostomy siting, education about body weight management and advice on appropriate exercises. The treatment of PH can be conservative or surgical, and the choice is based on the patient's clinical condition. Ostomy can significantly impact on a patient's quality of life (QoL), and the presence of PH can further aggravate the situation. This overview of PH considers the incidence, aetiology, prevention, treatment and impact on QoL.

Rethinking recovery: rehabilitation and intra-abdominal pressure management to reduce the risk of parastomal hernia

Julie Mills, RN, Global Ostomy Nurse Engagement Manager, Convatec, writes that parastomal hernia is a common and consequential complication of stoma surgery, but the risk can be reduced with a structured rehabilitation programme based on appropriate core abdominal exercises, supported by the full multidisciplinary team.

Losing weight to achieve joint or hernia surgery: is the intragastric balloon the answer?

BACKGROUND

Obesity is an epidemic, with its accompanying medical conditions putting patients at increased risk of postoperative complications. For patients undergoing elective surgery, preoperative weight loss provides an opportunity to decrease complications. We sought to evaluate the safety and efficacy of an intragastric balloon in achieving a body mass index (BMI) < 35 kg/m2 prior to elective joint replacement or hernia repair.

METHODS

Retrospective review of all patients who had intragastric balloon placement at a level 1A VA medical center from 1/2019 to 1/2023. Patients who had a scheduled qualifying procedure (knee/hip replacement or hernia repair) and had a BMI > 35 kg/m2 were offered intragastric balloon placement to achieve 30-50lbs (13-28 kg) weight loss prior to surgery. Participation in a standardized weight loss program for 12 months was required. Balloons were removed 6 months after placement, preferentially concomitant with the qualifying procedure. Baseline demographics, duration of balloon therapy, weight loss and progression to qualifying procedure were recorded.

RESULTS

Twenty patients completed intragastric balloon therapy and had balloon removal. Mean age 54 (34-71 years), majority (95%) male. Mean balloon duration was 200 ± 37 days. Mean weight loss was 30.8 ± 17.7lbs (14.0 ± 8.0 kg) with an average BMI reduction of 4.4 ± 2.9. Seventeen (85%) patients were successful, 15 (75%) underwent elective surgery and 2 (10%) were no longer symptomatic after weight loss. Three patients (15%) did not lose sufficient weight to qualify or were too ill to undergo surgery. Nausea was the most frequent side effect. One (5%) patient was readmitted within 30 days for pneumonia.

DISCUSSION

Intragastric balloon placement resulted in an average 30lbs (14 kg) weight loss over 6 months allowing more than 75% of patients to undergo joint replacement or hernia repair at an optimal weight. Intragastric balloons should be considered in patients requiring 30-50lbs (13-28 kg) weight loss prior to elective surgery. More study is needed to determine the long-term benefit of preoperative weight loss prior to elective surgery.

Spontaneous lesser omental herniation resolved by laparoscopic surgery: case report and systematic literature review

BACKGROUND

Despite its extremely low incidence, intra-abdominal herniation through the lesser omentum is associated with a high mortality rate and must be recognized early and treated urgently. To overcome a lack of data on the management of this condition, we collected and reviewed all the reported cases of operated lesser omental hernia and presented the case of a patient treated by laparoscopy for an isolated lesser omental hernia.

METHODS

According to PRISMA guidelines and using PubMed, Cochrane Library, and Web of Science, a systematic literature review of cases of lesser omental hernia treated by surgery was performed on February 12, 2023.

RESULTS

Of 482 articles, 30 were included for analysis and only 9 articles presented an isolated hernia through the lesser omentum. Among these, 4 patients were female and the median age was 38. Upper abdominal pain and vomiting were reported in 7 out of 9 patients. The small bowel was responsible for 78% (7/9) of all lesser omental herniations. All of them were treated by laparotomy. In addition, we describe the case of a 65-year-old woman without prior surgical history who was treated by laparoscopy for a spontaneous closed loop hernia through the lesser omentum without any other associated hernias.

CONCLUSION

Mostly associated with prior surgery or trauma, this type of herniation could sometimes occur spontaneously without any sign of peritonitis. Due to the high mortality rate, internal abdominal hernias should always be ruled out with a CT scan in front of patients presenting with persisting acute abdominal pain and no alternative diagnosis.

Outcomes of leaflet-shaped acellular dermal matrix with a thickness-gradient for abdominal fascial defect repair in muscle-sparing TRAM flap-based breast reconstruction

BACKGROUND

Numerous fascial closure techniques have been used to reduce donor site morbidities after transverse rectus abdominis myocutaneous (TRAM) flap harvest. A leaflet-shaped acellular dermal matrix (ADM) with a thickness gradient was designed to cover the defect effectively and to withstand the pressure applied to the lower portion of the defect. The complication and functional recovery rates of the donor site of the custom ADM were compared with those of previous methods of fascial closure (primary closure and polypropylene mesh assisted closure).

MATERIALS AND METHODS

A retrospective review of patients undergoing immediate or delayed breast reconstruction using muscle-sparing TRAM flaps was performed. Abdominal bulging, hernia, wound dehiscence, infection, seroma, and hematoma rates were compared. The Back Performance Scale measured four months postoperatively was compared to evaluate the donor site's recovery rate.

RESULTS

A total of 173 patients were analyzed. The three groups did not differ in hernia, wound dehiscence, infection, and hematoma rates. However, the abdominal bulging rate was lower in the primary closure group, while the seroma rate was higher in the mesh group. Functional recovery was the fastest in the custom ADM group.

CONCLUSION

A thickness-gradient, leaflet-shaped ADM can be effectively used as an onlay graft to cover the abdominal fascial defect, with similar complication rates, while providing a faster recovery of abdominal function.

Outcomes of an enhanced recovery after surgery (ERAS) program to limit perioperative opioid use in outpatient minimally invasive GI and hernia surgeries

BACKGROUND

Perioperative pain management is important for patient satisfaction while returning to homeostasis in the safest way possible. Studies show that patients don't require as much opioids as once thought. The benefits of ERAS pathways extend beyond enhancement of patients' perioperative experience, and include reducing opioid prescriptions in the face of the ongoing nationwide opioid crisis and evidence of prescription opioids as a contributor.

METHODS

We performed a retrospective cohort study of patients undergoing same day minimally invasive surgery (MIS) procedures for GI and hernia disease using a minimal-opioid ERAS protocol at two community hospitals between January 2020 and May 2022. We included elective laparoscopic cholecystectomy (LC), laparoscopic appendectomy (LA) for acute appendicitis without perforation, and minimally invasive (laparoscopic and robotic) inguinal and ventral hernia repair or abdominal wall reconstruction (AWR). Primary outcome was postoperative opioid use.

RESULTS

A total of 509 patients were included, undergoing procedures of MIS hernia repair (52.5%), LC (43.6%), and LA (7.9%). Only 9.4% of patients received opioid prescriptions at discharge, with no difference between groups. Among the patients receiving a prescription at discharge, there was a significant difference in morphine milligram equivalents (MME) prescribed (25.0 ± 0.0 in the LA group, 65.0 ± 41.4 in the LC group, 100.6 ± 46.2 in the MIS hernia/AWR group; P = 0.015). Nine percent of patients called with pain management concerns postoperatively. ASA score ≥ 3 was associated with increased odds for postoperative opioid prescription (OR 2.084; P = 0.014).

CONCLUSIONS

We demonstrate that an opioid-sparing ERAS program effectively manages pain for patients undergoing multiple outpatient MIS GI/hernia procedures, and suggests generalizability across a diverse range of operations. Therefore, the use of ERAS may safely and effectively expand beyond inpatient MIS and open surgeries that target reduced length of stay to also minimize opioids for outpatient procedures.

Port-site hernias in patients undergoing laparoscopic and/or robotic surgery: Can they be prevented?

As laparoscopic surgery advances into robotic surgery, there still remains the occurrence of port-site hernias. This can have severe consequences for the patient, including needing further surgery such as bowel resection. This has an impact on both patient and the National Health Service as the stay in hospital is prolonged, increasing the demand on staff and creating more expense to the National Health Service. This literature review explores the prevalence of port-site hernias and discovers the recommendations in preventive measures. Findings include the benefit of using non-bladed trocars and further studies need to be conducted into the association between smaller or larger ports and port-site hernias.

Not deep enough: Modeling the effect of shallow placement of the DaVinci Xi "bariatric" long trocar on the muscular abdominal wall

INTRODUCTION

The DaVinci Xi Robotic Surgical System (Xi) long cannula (Intuitive Surgical Company, Sunnyvale, CA) provides five additional centimeters of distal length compared to the standard Xi trocar. The extra length allows the cannula to traverse prohibitively thick body wall tissue. Our aims are to quantitatively model the consequences of not preserving the rotational centerpoint of motion (RCM) at the muscular abdominal wall. This is an essential tenet in robotic surgery; it is violated with shallow placement of the long trocar. This leads to unchecked, unnoticed blunt widening of port sites by the robotic arm, increasing hernia risk.

METHODS

We begin with an exploration of the schematic of the Xi robotic arm as patented by Intuitive (U.S. Patent #5931832). We trigonometrically model the lateral displacement of the abdominal wall at the trocar site with respect to vertical trocar shallowness, instrument tip depth, and instrument tip lateral motion from neutral midline.

RESULTS

The rigid parallelogram movement structure of the Xi preserves the RCM at the thick black marker printed on every Xi cannula. By limitation of design, both long and standard trocars must have this marker at the exact same distance from their proximal end. The value ranges of our model parameters (presuming a reasonable maximum orientation angle of 45° from midline) are: trocar shallowness [1 cm, 7 cm]; instrument tip depth [0 cm, 20 cm]; instrument tip lateral movement [0.0 cm, 14.1 cm]. Abdominal wall displacement increased proportionally as each instrument tip parameter reached its maximum deviation from the orthogonal midline as described in the plot figure. Maximal wall displacement at maximal shallowness was approximately 7.0 cm.

CONCLUSION

Robotic surgery revolutionizes modern operation, particularly within bariatrics. However, the current Xi arm design disallows a true long trocar to be used safely without compromising the RCM, thereby risking hernia development.