Recurrent groin hernia surgery

Surgical unit volume and reoperation for recurrence following total extraperitoneal groin hernia repairs: nationwide population-based register study

BACKGROUND

The quality of total extraperitoneal groin hernia repair and recurrence rates are influenced by various factors, potentially including the annual surgical unit volume of repairs. The precise nature of this relationship remains unclear. The aim of this study was to investigate the influence of surgical unit volume on reoperation rates for recurrence following total extraperitoneal groin hernia repair.

METHODS

This observational nationwide population-based study utilized prospectively collected data from the Swedish Hernia Register. Patients aged 15 years old or older who underwent a total extraperitoneal groin hernia repair from 1 January 2015 to 31 August 2019 were eligible. Follow-up time was until 31 August 2022. Surgical units were grouped into low-volume (fewer than 12 repairs per year), low-medium-volume (12-50 repairs per year), medium-high-volume (greater than 50-150 repairs per year), and high-volume (greater than 150 repairs per year) units. The primary outcome was reoperation for recurrence. The secondary outcome was postoperative complications.

RESULTS

A total of 20 656 elective total extraperitoneal groin hernia repairs were included across 75 surgical units. The reoperation rate for recurrence was higher in all three lower-volume groups (low-volume, 5.3%; low-medium-volume, 3.8%; and medium-high-volume, 3.5%) compared with the high-volume group (2.9%). Adjusted multivariable Cox regression analysis revealed a statistically significant increased HR for reoperation for recurrence in the low-volume group (1.87 (95% c.i. 1.31 to 2.67)) and the low-medium-volume group (1.32 (95% c.i. 1.07 to 1.62)) compared with the high-volume group. No difference was seen between the groups regarding the risk of postoperative complications.

CONCLUSION

The risk of reoperation for recurrence following total extraperitoneal groin hernia repair is significantly increased in surgical units that perform fewer than 51 repairs per year. The findings may influence guidelines on required annual surgical unit volume to improve patient outcomes following total extraperitoneal groin hernia repair.

Bone anchor as fixation method for abdominal wall reconstruction. A case report about a ten times recurred inguinal hernia

INTRODUCTION

While the use of bone anchor fixation for abdominal wall reconstruction for supra-pubic incisional hernia is well described (Yee et al., 2008 [1]), we show in this case report, written in line with the SCARE criteria (Agha et al., 2020 [2]), a novel use of this tool as an adjunct in the repair of a ten time recurrent inguinal hernia.

CASE REPORT

A 65 years old multiparous, diabetic non-obese female, with previous abdominoplasty was submitted for left inguinal hernia for ten times, between multiples complications between infection, more than one mesh excision by anterior approach and laparoscopic approach. The wide range of procedures culminated in a destruction of the abdominal wall, making it impossible for a usual fixation of mesh in the region. Therefore, a multidisciplinary approach was planned for the patient with a bone anchor as a mesh fixation method. With a year follow up we did not observe a local hernia recurrence.

CLINICAL DISCUSSION

Hernia itself is a multifactorial disease. As a anatomical defect, surgery is the only effective treatment. Our report brings a novel approach to a challenging case with many previous unsuccessful applications of conventional surgeries. Hence, we stimulate the multidisciplinary discussion for enhancing post operatory outcomes and a better point of care for the patient.

Analysis of the efficacy of laparoscopic high hernia sac ligation in adolescent indirect hernia

OBJECTIVE

Inguinal hernias are a common disease that may present at all ages. Adolescents are a unique patient population between children and adults. The etiology and the surgical treatment strategies of adolescent indirect hernias are not clear. Specifically, whether these kinds of hernias should be treated by high ligation or mesh repair remains controversial. We aimed to evaluate the efficacy of laparoscopic high hernia sac ligation in adolescent indirect hernia.

METHODS

The data of adolescent patients who underwent laparoscopic high hernia sac ligation at the The First People's Hospital of Foshan,China, from January 2012 to December 2019 were analyzed retrospectively. Data collected included their age, gender, weight, surgical method, hernia ring diameter, operation time, postoperative recurrence rate and postoperative complications.

RESULTS

A total of 70 patients were enrolled, including 61 males (87.14%) and 9 females (12.86%),all patients were aged 13-18 years old (mean 14.87 ± 1.56years), weighed 28-92 kg (mean 53.04 ± 10.60 kg). All 70 patients underwent laparoscopic surgery except 2 patients with irreducible hernias who converted to laparotomy.The hernia ring diameter ranged from 0.5 to 3 cm (mean 1.39 ± 0.49 cm), and was ≤ 2 cm in 68 cases (97.14%).The operative length ranged from 12 to 105 min (average 24.96 ± 12.61 min), There were 37(52.9%) right-sided hernias, 32 (45.7%) left-sided hernias, 1 (1.4%) bilateral hernia.There were 67(95.7%)reducible hernias,2(2.9%)irreducible hernias ,and 1(1.4%)incarcerated hernia.Hospital stays ranged from 1 to 5 days (mean 2.37 ± 1.05 days). Follow-ups were performed from 30-119months (mean 74.27 ± 28.14months). There were no cases of recurrence, howere, incision infection occured in 1 patient, who underwent a second operation 6 months after surgery, and 4 (5.7%) patients had complaints of intermittent pain around the ligation incision site, mostly during exercise .

CONCLUSION

Laparoscopic high hernia sac ligation is feasible for treatment of adolescent indirect hernias with a hernia ring diameter of ≤ 2 cm.

Do postoperative complications correlate to chronic pain following inguinal hernia repair? A prospective cohort study from the Swedish Hernia Register

PURPOSE

To analyse if postoperative complications constitute a predictor for the risk of developing long-term groin pain.

METHODS

Population-based prospective cohort study of 30,659 patients operated for inguinal hernia 2015-2017 included in the Swedish Hernia Register. Registered post-operative complications were categorised into hematomas, surgical site infections, seromas, urinary tract complications, and acute post-operative pain. A questionnaire enquiring about groin pain was distributed to all patients 1 year after surgery. Multivariable logistic regression analysis was used to find any association between postoperative complications and reported level of pain 1 year after surgery.

RESULTS

The response rate was 64.5%. In total 19,773 eligible participants responded to the questionnaire, whereof 73.4% had undergone open anterior mesh repair and 26.6% had undergone endo-laparoscopic mesh repair. Registered postoperative complications were: 750 hematomas (2.3%), 516 surgical site infections (1.6%), 395 seromas (1.2%), 1216 urinary tract complications (3.7%), and 520 hernia repairs with acute post-operative pain (1.6%). Among patients who had undergone open anterior mesh repair, an association between persistent pain and hematomas (OR 2.03, CI 1.30-3.18), surgical site infections (OR 2.18, CI 1.27-3.73) and acute post-operative pain (OR 7.46, CI 4.02-13.87) was seen. Analysis of patients with endo-laparoscopic repair showed an association between persistent pain and acute post-operative pain (OR 9.35, CI 3.18-27.48).

CONCLUSION

Acute postoperative pain was a strong predictor for persistent pain following both open anterior and endo-laparoscopic hernia repair. Surgical site infection and hematoma were predictors for persistent pain following open anterior hernia repair, although the rate of reported postoperative complications was low.

Analysis of risk factors for surgical site infection and postoperative recurrence following inguinal and femoral hernia surgery in adults

OBJECTIVE

We aimed to evaluate the causes of complications following surgery for inguinal and femoral hernia, using surgical site infection (SSI) and recurrence rate as indicators of outcomes to consider appropriate treatments.

METHODS

We retrospectively assessed the medical histories of 1,098 patients with adult inguinal and femoral hernias who underwent herniorrhaphy between July 2010 and March 2019. Using SSI and recurrence rate as indicators of outcomes, we statistically assessed the influence of preoperative and operative conditions on surgical outcomes.

RESULTS

The occurrence of postoperative SSI was significantly more frequent in patients who experienced a long surgical duration, excessive blood loss, and incarceration; underwent emergency surgery and bowel resection; and in whom no mesh sheet insertion was performed. There was no correlation between mesh use and SSI in cases that did not require emergency incarceration repair. For cases involving hernia incarceration, the use of a mesh sheet was avoided to prevent potential infection, which could explain the high incidence of SSI in cases where mesh was not used. The hernia may have recurred due to technical issues during the procedure, as well as failure to ligate the hernia sac.

CONCLUSIONS

Selecting the appropriate surgical method for hernia repair may reduce the incidence of SSI. If manual reduction of inguinal hernias is not possible, an appropriate surgical procedure should be determined based on laparoscopic findings in facilities where laparoscopic hernia surgeries are frequently performed. Moreover, in cases without infection and bowel resection, mesh use may be beneficial. Recurrence can be prevented by ligating the hernia sac during surgery and solving relevant technical problems.

Laparoscopic treatment (reTAPP) for recurrence after laparoscopic inguinal hernia repair

PURPOSE

For inguinal hernia recurrences, the European Hernia Society guidelines recommend laparo-endoscopic repair (LR) following a previous open surgery (OS) and, conversely, OS following previous laparo-endoscopic repair. Laparoscopic treatment of recurrences after previous LR is controversial. The purpose of this study was to determine the safety, feasibility, and reliability of a repeated transabdominal preperitoneal laparoscopic repair (reTAPP) for a recurrent hernia.

METHODS

We analyzed and compared a series of patients with recurrent inguinal hernia after LR who underwent repair by a conventional approach with similar patients who underwent reTAPP between January 2010 and December 2018.

RESULTS

Between January 2010 and December 2018, 2488 transabdominal preperitoneal laparoscopic inguinal hernia (TAPP) repairs were performed. Recurrence was observed in 46 (1.8%). Of these patients, 18 (39%; Group 1; G1) underwent conventional open repair (Lichtenstein technique) and 28 (61%; Group 2; G2) reTAPP. In G2, repair was successful in 24 patients (86%); however, four cases (14%) needed conversion to OS because of technical difficulties. Two patients re-recurred (4.3%), one in G1 which was resolved in a third approach with a reTAPP and the other in G2 which was resolved with OS.

CONCLUSION

ReTAPP surgery for recurrences after previous TAPP repair proved to be safe and was associated with a shorter length of hospital stay and morbidity and recurrence rates comparable to OS at a highly specialized center. Randomized studies with a larger number of cases are necessary to confirm these findings and draw more robust and objective conclusions.

The application of single-port laparoscopic percutaneous internal ring suture for the management of indirect inguinal hernia in female adults

As most of the female inguinal hernias are of indirect type, we conducted this retrospective study to evaluate whether the single port laparoscopic percutaneous internal ring suture is feasible for the management of indirect inguinal hernia in female adults. From April 2016 to August 2019, there were 31 female adults who were diagnosed with inguinal hernias and received laparoscopic inspection at our surgical department. One patient who was finally diagnosed as an encysted hydrocele was excluded from the statistic study. All the 30 cases were of indirect type with a total of 35 single port laparoscopic percutaneous internal ring sutures performed. The median age was 38 years (range 20–88 years). The number and percentage of patients with right, left and bilateral hernias were 17 (56%), 11 (37%) and 2 (7%) respectively. Three contralateral patent processi vaginalium and 1 occult femoral hernia were found during operation. The percentages of the respective classifications according to the European Hernia Society system for the 35 PIRSs were L1: 40%, L2: 49%, and L3: 11%. The average operation time was 18 min for unilateral and 30 min for bilateral hernias. There were 1 recurrence and 1 chronic postoperative inguinal pain. Both had their symptoms and signs resolved after reoperation. The mean follow-up period was 13.6 months. We concluded that the single-port laparoscopic percutaneous internal ring suture is feasible for the management of indirect inguinal hernia in female adults.

[Ventral hernias and extracellular matrix of connective tissue]

Ventral hernia is still one of the most common reason for scheduled and emergency surgery. The review is designed to reveal relationships between metabolism in extracellular matrix of connective tissue and pathogenesis of ventral hernias. These data will be valuable to develop a personalized approach to the treatment of these patients.

Lightweight mesh is recommended in open inguinal (Lichtenstein) hernia repair: A systematic review and meta-analysis

BACKGROUND

The use of lightweight mesh for inguinal hernia repair has been suggested to be preferable compared with heavyweight mesh. Nevertheless, surgeons do not use lightweight mesh routinely, possibly owing to the higher price and lack of confidence in evaluation of previous evidence. The aim of this systematic review and meta-analysis is to update the available randomized controlled trials and provide a recommendation on the use of lightweight mesh or heavyweight mesh in open inguinal hernia repair.

METHODS

A literature search was conducted in May 2019 in MEDLINE, Embase and the Cochrane library for randomized controlled trials comparing lightweight (≤50 g/m²) and heavyweight (>70 g/m²) mesh in patients undergoing open (Lichtenstein) surgery for uncomplicated inguinal hernias. Outcomes were recurrences (overall, after direct or indirect repair), chronic pain (analyzing any and severe pain), and the feeling of a foreign body. The level of evidence was assessed using GRADE. Risk ratios and 95% confidence intervals were calculated by random effect meta-analyses.

RESULTS

Twenty-one randomized controlled trials involving 4,576 patients (lightweight mesh 2,257 vs heavyweight mesh 2,319) were included. Follow-up ranged from 3 to 60 months. No difference between lightweight mesh and heavyweight mesh was determined for recurrence rates (lightweight mesh 42 of 2,068 and heavyweight mesh 34 of 2,132; risk ratios 1.22; 95% confidence interval, 0.76-1.96) or severe pain (lightweight mesh 14 of 1,517 and heavyweight mesh 26 of 1,591; risk ratios 0.73; 95% confidence interval, 0.38-1.41). A significant reduction was seen for any pain after lightweight mesh (234 of 1,603) compared with heavyweight mesh (322 of 1,683; risk ratios 0.78; 95% confidence interval, 0.64-0.96) and for the feeling of a foreign body (lightweight mesh 130 of 1,053 and heavyweight mesh 209 of 1,035; risk ratios 0.64; 95% confidence interval, 0.51-0.80).

CONCLUSION

Lightweight mesh should be used in open (Lichtenstein) inguinal hernia repair.

Total extraperitoneal endoscopic hernioplasty (TEP) versus Lichtenstein hernioplasty: a systematic review by updated traditional and cumulative meta-analysis of randomised-controlled trials

Background–purpose

Totally extraperitoneal (TEP) endoscopic hernioplasty and Lichtenstein hernioplasty are the most commonly used approaches for inguinal hernia repair. However, current evidence on which is the preferred approach is inconclusive. This updated meta-analysis was conducted to track the accumulation of evidence over time.

Methods

Studies were identified by a systematic literature search of the EMBASE, PubMed, Cochrane Library, and Google Scholar databases. Fixed- and random-effects models were used to cumulatively assess the accumulation of evidence over time.

Results

The TEP cohort showed significantly higher rates of recurrences and vascular injuries compared to the Lichtenstein cohort; [Peto Odds ratio (OR) = 1.58 (1.22, 2.04), p = 0.005], [Peto OR = 2.49 (1.05, 5.88), p = 0.04], respectively. In contrast, haematoma formation rate, time to return to usual activities, and local paraesthesia were significantly lower in the TEP cohort compared to the Lichtenstein cohort; [Peto OR = 0.26 (0.16, 0.41), p ≤ 0.001], [mean difference = − 6.32 (− 8.17, − 4.48), p ≤ 0.001], [Peto OR = 0.26 (0.17, 0.40), p ≤ 0.001], respectively.

Conclusions

This study, which is based on randomised-controlled trials (RCTs) of high quality, showed significantly higher rates of recurrences and vascular injuries in the TEP cohort than in the Lichtenstein cohort. In contrast, rate of postoperative haematoma formation, local paraesthesia, and time to return to usual activities were significantly lower in the TEP cohort than in the Lichtenstein cohort. Future multicentre RCTs with strict adherence to the standards recommended in the Consolidated Standards of Reporting Trials guidelines will shed further light on the topic.

Electronic supplementary material

The online version of this article (10.1007/s10029-019-02049-w) contains supplementary material, which is available to authorized users.

Chronic pain after two laparoendoscopic inguinal hernia repairs compared with laparoendoscopic repair followed by the Lichtenstein repair: an international questionnaire study

BACKGROUND

The best repair of a recurrent inguinal hernia after primary laparoendoscopic repair is debatable. The aim was to assess chronic pain after two laparoendoscopic repairs in the same groin compared with Lichtenstein reoperation preceded by a laparoendoscopic repair.

METHODS

This cohort study included adult patients who had received two laparoendoscopic repairs (Lap-Lap) or a laparoendoscopic repair followed by the Lichtenstein repair (Lap-Lich). Eligible patients were identified in the Danish and the Swedish hernia databases. Lap-Lap was matched 1:3 with Lap-Lich, and patients were sent validated questionnaires. The primary outcome was the proportion with chronic pain-related functional impairment, compared between the two groups. Secondary outcomes included chronic pain during various activities.

RESULTS

In total, 74% (546 patients) responded to the questionnaires with a median follow-up since the second repair of 4.9 years (0.9-21.9 years). Regarding the primary outcome, 21% in Lap-Lap and Lap-Lich had chronic pain-related functional impairment of daily activities (p = 0.94). More patients in Lap-Lap compared with Lap-Lich reported pain ≥ 20 mm measured by the visual analog scale, 11% versus 5%, p = 0.04. However, there was no difference in the median VAS score or in the vast majority of the remaining secondary outcomes.

CONCLUSIONS

There was no overall difference in chronic pain between patients who had received Lap-Lap compared with Lap-Lich. Choice of operative strategy for the second repair should, therefore, not be based on risk of chronic pain.

Recurrent groin hernia surgery after primary open inguinal procedures: a reappraisal of the open preperitoneal (Ugahary) technique

PURPOSE

There are several methods for repairing recurrent inguinal hernia, depending on the type of initial repair. Our aim was to analyze our long follow-up results on the open preperitoneal repair for patients with recurrent inguinal hernia.

METHODS

Our retrospective survey included 135 consecutive recurrent inguinal hernia patients, operated on during 1999-2010, with a mean follow-up time of 8.7 years.

RESULTS

During the mean follow-up time of 8.7 years, only four (3%) patients developed a re-recurrence. Two of these patients were asymptomatic, and the two other were operated on. Early postoperative complications occurred in four (3%) patients. The complications comprised one hematoma, one seroma, and two infections. Chronic pain was diagnosed in five (3.7%) patients, but their symptoms disappeared spontaneously within a few years.

CONCLUSIONS

We conclude that in competent hands, the open preperitoneal repair (Ugahary) is a good surgical option in operating recurrent inguinal hernias.

An 11-year analysis of reoperated groins after endoscopic totally extraperitoneal (TEP) inguinal hernia repair in a high volume hernia center

BACKGROUND

Developments in inguinal hernia surgery have substantially lowered recurrence rates, yet recurrences remain an important outcome parameter of inguinal hernia repair. The aim of this study was to analyze the characteristics of all reoperated groins after endoscopic totally extraperitoneal (TEP) inguinal hernia repair in a high-volume hernia clinic in the Netherlands.

METHODS

All groins with recurrence-like symptoms reoperated after previous TEP inguinal hernia repair between January 2006 and December 2016 were analyzed. Patient characteristics, imaging findings, primary hernia type, time to recurrence and recurrence type were assessed.

RESULTS

A total of 137 groins were reoperated in 130 patients. The median age at the TEP procedure was 55 years [interquartile range (IQR) 45-64 years]. Fifty-seven groins were initially part of a bilateral procedure (42%). Median time until recurrence was 9 months (IQR 4-26 months). Reoperation findings were a hernia recurrence in 76%, an isolated lipoma in 18%, and no recurrence or lipoma in 6%. The majority of hernias recurred at their initial site (70%), of which the greatest part involved direct hernias. Isolated lipomas were more frequently seen after indirect hernia repair.

CONCLUSIONS

Inguinal hernia recurrences were still observed in this high-volume hernia clinic. Recurrences were most frequently seen at their initial hernia site, the majority involving direct hernias. Isolated lipomas presenting as a pseudorecurrence were most frequently seen after correction of indirect hernias. In accordance with the current guidelines, reducing recurrence rates can be achieved by mesh fixation in bilateral, large and direct defects and by thoroughly reducing lipomas.

Reoperation for inguinal hernia recurrence in Ontario: a population-based study

PURPOSE

Despite the frequency with which inguinal hernia repairs (IHR) are performed, the real-world comparative effectiveness of laparoscopic versus open repairs is not well established. We compared the rate of recurrent inguinal hernia after laparoscopic and open mesh procedures.

METHODS

We designed a population-based retrospective cohort study using linked administrative databases including adult patients in Ontario, Canada, who underwent primary IHR from April 1, 2003 to December 31, 2012. Patients were followed to August 31, 2014. Our primary outcome was reoperation for recurrent IHR, with covariate adjustment using Cox proportional hazards modeling. We constructed separate models to evaluate the effect of surgeon caseload on recurrence rates.

RESULTS

We identified 93,501 adults undergoing primary IHR (85.4% open with mesh and 14.6% laparoscopic) with a median follow-up of 5.5 years. The 5-year cumulative risk of recurrent IHR was 2.0% in the open group and 3.4% in the laparoscopic group. After adjusting for patient and surgeon factors, we found that patients who underwent laparoscopic repair had a higher risk of recurrent IHR than those who underwent open repair when annual surgeon volume in the preceding year was ≤25 technique-specific cases (HR 1.76; 95% CI 1.45-2.13) or 26-50 technique-specific cases (HR 1.78; 95% CI 1.08-2.93). Few high-volume laparoscopic surgeons (> 50 cases/year) could be identified. Laparoscopic IHR did not carry a higher risk of recurrence for patients whose surgeons had performed > 50 technique-specific cases in the preceding year (HR 1.21; 95% CI 0.45-3.26).

CONCLUSION

Laparoscopic IHR is generally associated with a higher risk of recurrence than open IHR. Though high-volume surgeons may be able to achieve equivalent results with laparoscopic and open techniques, few surgeons in our study population met this volume criterion for laparoscopic repairs.

Novel Transabdominal Preperitoneal Hernioplasty Technique for Recurrent Inguinal Hernia: Overlapping of Whole Posterior Wall with Newly Added Mesh and Pre-Existing Mesh by Closing Hernia Defect

Purpose: In some patients with recurrent inguinal hernias who have undergone previous laparoscopic herniorrhaphy, dissecting the entire posterior wall is difficult due to mesh adhesion. We applied a novel transabdominal preperitoneal (TAPP) hernioplasty technique that involves closing of the hernia defect and implantation of a newly added mesh while preserving the pre-existing mesh for inguinal hernia recurrence after laparoscopic herniorrhaphy. This study was performed to evaluate this novel technique for treatment of recurrent inguinal hernias. Methods: We evaluated 24 adult patients (23 male, 1 female; mean age, 55.8 ± 14.0 years; range, 26-77 years) with recurring inguinal hernias. A modified TAPP (mTAPP) procedure involving closing of the defect and implantation of an 8 × 6-cm² newly added mesh was performed. The new technique covered the whole posterior wall with pre-existing mesh. Results: Among the 24 patients, there were 12 direct hernias and 12 indirect hernias. The mean postoperative pain scores after 1 week were 2.5 and 2.0 in patients with direct and indirect hernias, respectively, and the mean duration until return to normal activities was 8.5 and 7.5 days in patients with direct and indirect hernias, respectively. The mean follow-up period was 21.0 ± 17.0 (range, 2-56) months. No chronic inguinodynia or rerecurrence was observed. Conclusions: In this novel mTAPP procedure for recurring inguinal hernias, closing sutures prevented mesh migration, and complete posterior wall overlap was possible using the pre-existing mesh and newly added mesh. The mTAPP procedure was an effective operation with few recurrences and complications.

Laparoscopic Experience for Recurrent Inguinal Hernia Repair in a Single Center for 14 Years

Laparoscopic techniques are now well pervading in the treatment of inguinal hernia. This study aims to investigate the laparoscopic strategy for recurrent inguinal hernia repair. Laparoscopic technique was retrospectively applied to 330 patients with 352 recurrent inguinal hernias in the past 14 years. The surgical strategies were further evaluated. There were 22 cases with bilateral recurrent hernias, whereas the rest 308 cases with unilateral disorders. Patients were further categorized by previous repair approaches as high ligation, sclerotherapy, conventional suture repair, Lichtenstein repair, plug and patch repair, and preperitoneal repair. All cases were successfully repaired by laparoscopic approaches including transabdominal preperitoneal (TAPP) (288 cases), totally extraperitoneal (50 cases), and intraperitoneal onlay mesh (14 cases). The median operation duration was 39.5 ± 13.4 minutes. The average Visual Analog Scales score on postoperative day 1 was 2.4 ± 1.1. The median follow-up time was 36 (14–61) months. There was one case of recurrence during the follow-ups. One severe complication, i.e., bowel injury, was observed and cured, whereas other complications were as follows: 22 seroma, 8 urinary retention, 3 transient paresthesia, and 1 ileus. Laparoscopic procedures for recurrence inguinal hernia are safe and applicable. A surgeon can choose to reinforce the myopectineal orifice or only fix the hernia defect accordingly. The strategy of choosing TAPP and/or totally extraperitoneal depends on the type of previous repair, the exact anatomical position of the previous implanted mesh, and more importantly, the surgeon's experience. Moreover, the intraperitoneal onlay mesh technique can be regarded as a backup option for TAPP in certain cases.

The HerniaSurge Group. International guidelines for groin hernia management

INTRODUCTION

Worldwide, more than 20 million patients undergo groin hernia repair annually. The many different approaches, treatment indications and a significant array of techniques for groin hernia repair warrant guidelines to standardize care, minimize complications, and improve results. The main goal of these guidelines is to improve patient outcomes, specifically to decrease recurrence rates and reduce chronic pain, the most frequent problems following groin hernia repair. They have been endorsed by all five continental hernia societies, the International Endo Hernia Society and the European Association for Endoscopic Surgery.

METHODS

An expert group of international surgeons (the HerniaSurge Group) and one anesthesiologist pain expert was formed. The group consisted of members from all continents with specific experience in hernia-related research. Care was taken to include surgeons who perform different types of repair and had preferably performed research on groin hernia surgery. During the Group's first meeting, evidence-based medicine (EBM) training occurred and 166 key questions (KQ) were formulated. EBM rules were followed in complete literature searches (including a complete search by The Dutch Cochrane database) to January 1, 2015 and to July 1, 2015 for level 1 publications. The articles were scored by teams of two or three according to Oxford, SIGN and Grade methodologies. During five 2-day meetings, results were discussed with the working group members leading to 136 statements and 88 recommendations. Recommendations were graded as "strong" (recommendations) or "weak" (suggestions) and by consensus in some cases upgraded. In the Results and summary section below, the term "should" refers to a recommendation. The AGREE II instrument was used to validate the guidelines. An external review was performed by three international experts. They recommended the guidelines with high scores. The risk factors for inguinal hernia (IH) include: family history, previous contra-lateral hernia, male gender, age, abnormal collagen metabolism, prostatectomy, and low body mass index. Peri-operative risk factors for recurrence include poor surgical techniques, low surgical volumes, surgical inexperience and local anesthesia. These should be considered when treating IH patients. IH diagnosis can be confirmed by physical examination alone in the vast majority of patients with appropriate signs and symptoms. Rarely, ultrasound is necessary. Less commonly still, a dynamic MRI or CT scan or herniography may be needed. The EHS classification system is suggested to stratify IH patients for tailored treatment, research and audit. Symptomatic groin hernias should be treated surgically. Asymptomatic or minimally symptomatic male IH patients may be managed with "watchful waiting" since their risk of hernia-related emergencies is low. The majority of these individuals will eventually require surgery; therefore, surgical risks and the watchful waiting strategy should be discussed with patients. Surgical treatment should be tailored to the surgeon's expertise, patient- and hernia-related characteristics and local/national resources. Furthermore, patient health-related, life style and social factors should all influence the shared decision-making process leading up to hernia management. Mesh repair is recommended as first choice, either by an open procedure or a laparo-endoscopic repair technique. One standard repair technique for all groin hernias does not exist. It is recommended that surgeons/surgical services provide both anterior and posterior approach options. Lichtenstein and laparo-endoscopic repair are best evaluated. Many other techniques need further evaluation. Provided that resources and expertise are available, laparo-endoscopic techniques have faster recovery times, lower chronic pain risk and are cost effective. There is discussion concerning laparo-endoscopic management of potential bilateral hernias (occult hernia issue). After patient consent, during TAPP, the contra-lateral side should be inspected. This is not suggested during unilateral TEP repair. After appropriate discussions with patients concerning results tissue repair (first choice is the Shouldice technique) can be offered. Day surgery is recommended for the majority of groin hernia repair provided aftercare is organized. Surgeons should be aware of the intrinsic characteristics of the meshes they use. Use of so-called low-weight mesh may have slight short-term benefits like reduced postoperative pain and shorter convalescence, but are not associated with better longer-term outcomes like recurrence and chronic pain. Mesh selection on weight alone is not recommended. The incidence of erosion seems higher with plug versus flat mesh. It is suggested not to use plug repair techniques. The use of other implants to replace the standard flat mesh in the Lichtenstein technique is currently not recommended. In almost all cases, mesh fixation in TEP is unnecessary. In both TEP and TAPP it is recommended to fix mesh in M3 hernias (large medial) to reduce recurrence risk. Antibiotic prophylaxis in average-risk patients in low-risk environments is not recommended in open surgery. In laparo-endoscopic repair it is never recommended. Local anesthesia in open repair has many advantages, and its use is recommended provided the surgeon is experienced in this technique. General anesthesia is suggested over regional in patients aged 65 and older as it might be associated with fewer complications like myocardial infarction, pneumonia and thromboembolism. Perioperative field blocks and/or subfascial/subcutaneous infiltrations are recommended in all cases of open repair. Patients are recommended to resume normal activities without restrictions as soon as they feel comfortable. Provided expertise is available, it is suggested that women with groin hernias undergo laparo-endoscopic repair in order to decrease the risk of chronic pain and avoid missing a femoral hernia. Watchful waiting is suggested in pregnant women as groin swelling most often consists of self-limited round ligament varicosities. Timely mesh repair by a laparo-endoscopic approach is suggested for femoral hernias provided expertise is available. All complications of groin hernia management are discussed in an extensive chapter on the topic. Overall, the incidence of clinically significant chronic pain is in the 10-12% range, decreasing over time. Debilitating chronic pain affecting normal daily activities or work ranges from 0.5 to 6%. Chronic postoperative inguinal pain (CPIP) is defined as bothersome moderate pain impacting daily activities lasting at least 3 months postoperatively and decreasing over time. CPIP risk factors include: young age, female gender, high preoperative pain, early high postoperative pain, recurrent hernia and open repair. For CPIP the focus should be on nerve recognition in open surgery and, in selected cases, prophylactic pragmatic nerve resection (planned resection is not suggested). It is suggested that CPIP management be performed by multi-disciplinary teams. It is also suggested that CPIP be managed by a combination of pharmacological and interventional measures and, if this is unsuccessful, followed by, in selected cases (triple) neurectomy and (in selected cases) mesh removal. For recurrent hernia after anterior repair, posterior repair is recommended. If recurrence occurs after a posterior repair, an anterior repair is recommended. After a failed anterior and posterior approach, management by a specialist hernia surgeon is recommended. Risk factors for hernia incarceration/strangulation include: female gender, femoral hernia and a history of hospitalization related to groin hernia. It is suggested that treatment of emergencies be tailored according to patient- and hernia-related factors, local expertise and resources. Learning curves vary between different techniques. Probably about 100 supervised laparo-endoscopic repairs are needed to achieve the same results as open mesh surgery like Lichtenstein. It is suggested that case load per surgeon is more important than center volume. It is recommended that minimum requirements be developed to certify individuals as expert hernia surgeon. The same is true for the designation "Hernia Center". From a cost-effectiveness perspective, day-case laparoscopic IH repair with minimal use of disposables is recommended. The development and implementation of national groin hernia registries in every country (or region, in the case of small country populations) is suggested. They should include patient follow-up data and account for local healthcare structures. A dissemination and implementation plan of the guidelines will be developed by global (HerniaSurge), regional (international societies) and local (national chapters) initiatives through internet websites, social media and smartphone apps. An overarching plan to improve access to safe IH surgery in low-resource settings (LRSs) is needed. It is suggested that this plan contains simple guidelines and a sustainability strategy, independent of international aid. It is suggested that in LRSs the focus be on performing high-volume Lichtenstein repair under local anesthesia using low-cost mesh. Three chapters discuss future research, guidelines for general practitioners and guidelines for patients.

CONCLUSIONS

The HerniaSurge Group has developed these extensive and inclusive guidelines for the management of adult groin hernia patients. It is hoped that they will lead to better outcomes for groin hernia patients wherever they live. More knowledge, better training, national audit and specialization in groin hernia management will standardize care for these patients, lead to more effective and efficient healthcare and provide direction for future research.

Data and outcome of inguinal hernia repair in hernia registers - a review of the literature

Register-based observational studies in inguinal hernia repair deliver real-world data from very large patient populations and give answers to important clinical questions never evaluated in randomized controlled trials. Data from hernia registers can provide evidence of effectiveness of therapies in the general population. Hernia registers with high case load have existed in Sweden since 1992, in Denmark since 1998, and in Germany/Austria/Switzerland since 2009. In this review, the most important findings of register-based observational studies in inguinal hernia repair are presented. After an intensive literature search, 85 articles are relevant for this review. Numerous findings from these register-based studies have been incorporated into the various guidelines on inguinal hernia repair. These highlight the particular importance of hernia registers in answering key scientific and clinical questions in hernia surgery. The myriad of surgical techniques described – spanning more than 100 and with ongoing new additions – as well as the large number of associated medical devices call for, more than in other surgical disciplines, meticulous documentation of the methods used for the treatment of inguinal hernias.

Evidence-Based Hernia Treatment in Adults

BACKGROUND

Inguinal hernia repair is the most common general surgical procedure in industrialized countries, with a frequency of about 200 operations per 100 000 persons per year. Suture- and mesh-based techniques can be used, and the procedure can be either open or minimally invasive.

METHODS

This review is based on a selective search of the literature, with interpretation of the published findings according to the principles of evidence-based medicine.

RESULTS

Inguinal hernia is diagnosed by physical examination. Surgery is not necessarily indicated for a primary, asymptomatic inguinal hernia in a male patient, but all inguinal hernias in women should be operated on. For hernias in women, and for all bilateral hernias, a laparoscopic or endoscopic procedure is preferable to an open procedure. Primary unilateral hernias in men can be treated either by open surgery or by laparoscopy/endoscopy. Patients treated by laparoscopy/endoscopy develop chronic pain less often than those treated by open surgery. A mesh-based repair is generally recommended; this seems reasonable in view of the pathogenesis of the condition, which involves an abnormality of the extracellular matrix.

CONCLUSION

The choice of procedure has been addressed by international guidelines based on high-level evidence. Surgeons should deviate from their recommendations only in exceptional cases and for special reasons. Guideline conformity implies that hernia surgeons must master both open and endoscopic/laparoscopic techniques.

Laparo-endoscopic versus open recurrent inguinal hernia repair: should we follow the guidelines?

INTRODUCTION

On the basis of six meta-analyses, the guidelines of the European Hernia Society (EHS) recommend laparo-endoscopic recurrent repair following previous open inguinal hernia operation and, likewise, open repair following previous laparo-endoscopic operation. So far no data are available on implementation of the guidelines or for comparison of outcomes. Besides, there are no studies for comparison of outcomes for compliance versus non-compliance with the guidelines.

PATIENTS AND METHODS

In total, 4812 patients with elective unilateral recurrent inguinal hernia repair in men were enrolled between September 1, 2009, and September 17, 2014, in the Herniamed Registry. Only patients with 1-year follow-up were included.

RESULTS

Out of the 2482 laparo-endoscopic recurrent repair operations 90.5% of patients, and out of the 2330 open recurrent repair procedures only 38.5% of patients, were operated on in accordance with the guidelines of the EHS. Besides, on compliance with the guidelines multivariable analysis demonstrated for laparo-endoscopic recurrent repair a significantly lower risk of pain at rest (OR 0.643 [0.476; 0.868]; p = 0.004) and pain on exertion (OR 0.679 [0.537; 0.857]; p = 0.001). Comparison of laparo-endoscopic and open recurrent repair in settings of compliance versus non-compliance with the guidelines showed a higher incidence of perioperative complications and re-recurrences for recurrent repairs that did not comply with the guidelines.

CONCLUSION

The EHS guidelines for recurrent inguinal hernia repair are not yet being observed to the extent required. Non-compliance with the guidelines is associated with higher perioperative complication rates and higher risk of re-recurrence. Even on compliance with the guidelines, the risk of pain at rest and pain on exertion is higher after open recurrent repair than after laparo-endoscopic repair.

Surgical Aspects of Recurrent Inguinal Hernia in Adults

Surgeons occasionally encounter a case of recurrent hernia in adult patients after the primary repair, and these cases are challenging to manage appropriately. This study was conducted to describe the clinical nature of recurrent inguinal hernia, compare the results of management, and identify the relationship between the specific risk factors and the occurrence of recurrent hernia. Retrospectively reviewed 58 patients who underwent the inguinal herniorrhaphy for recurrent hernia in a single institution. Analyzed clinical characteristics of recurrent hernia and tried to verify the relationship between smoking, obesity, and occurrence of recurrent hernia. Recurrent inguinal hernia was 13.5 per cent of all hernia repairs in the study period. Most of the recurrence was the first event (74.1%) and showed an interval to recurrence with a mean duration of 40.7 months. There was no significant difference in procedure time, development of postoperative complications, and duration of hospital stay according to the procedure. Compromise of smoker and overweight was significantly higher in the recurrent group (P < 0.05). Surgeons should be aware of the increased risk for recurrence in adult inguinal hernia patients when they smoke or are overweight (body mass index ≥ 25 kg/m2), also it needs to follow-up during the adequate period.

Open Repair of Primary Versus Recurrent Male Unilateral Inguinal Hernias: Perioperative Complications and 1-Year Follow-up

Introduction

The recommendation in the European Hernia Society Guidelines for the treatment of recurrent inguinal hernias is to modify the technique in relation to the previous technique, and use a new plane of dissection for mesh implantation. However, the registry data show that even following previous open suture and mesh repair to treat a primary inguinal hernia, open suture and mesh repair can be used once again for a recurrent hernia. It is therefore important to know what the outcome of open repair of recurrent inguinal hernias is compared with open repair of primary inguinal hernias, while taking the previous operation into account.

Patients and methods

In the Herniamed Registry, a total of 17,594 patients with an open primary or recurrent unilateral inguinal hernia repair in men with a 1-year follow-up were prospectively documented between September 1, 2009 and August 31, 2013. Of these patients, 15,274 (86.8 %) had an open primary and 2320 (13.2 %) open recurrent repair. In the unadjusted and multivariable analyses, the dependent variables were intra- and postoperative complications, reoperations, recurrences, pain at rest, pain on exertion, and pain requiring treatment.

Results

Open recurrent repair compared with the open primary operation is a significant influence factor for higher intraoperative (p = 0.01) and postoperative (p = 0.05) complication rates, recurrence rate (p < 0.001), and pain rates (p < 0.001). With regard to repair of recurrent inguinal hernia, previous open mesh repair was associated with the least favorable outcome, and with the highest odds ratio, for all outcome criteria. Open recurrent repair following previous endoscopic operation presented the least risk for postoperative complications, complication-related reoperations, and re-recurrences. The pain rates identified on follow-up after open recurrent repair were lower following previous open suture operation compared with following open and endoscopic mesh repair.

Summary

A significantly less favorable perioperative and 1-year follow-up outcome must be expected for open repair of recurrent inguinal hernia in comparison with open primary inguinal hernia repair. After open recurrent repair, the most favorable perioperative complication and recurrence rates were identified following previous endoscopic repair, and the lowest pain rates following previous open suture repair. Open recurrent repair following previous open mesh operation was associated with the highest risks for perioperative complications, re-recurrences, and pain.

Endoscopic repair of primary versus recurrent male unilateral inguinal hernias: Are there differences in the outcome?

Introduction

To date, there are no prospective randomized studies that compare the outcome of endoscopic repair of primary versus recurrent inguinal hernias. It is therefore now attempted to answer that key question on the basis of registry data.

Patients and methods

In total, 20,624 patients were enrolled between September 1, 2009, and April 31, 2013. Of these patients, 18,142 (88.0 %) had a primary and 2482 (12.0 %) had a recurrent endoscopic repair. Only patients with male unilateral inguinal hernia and with a 1-year follow-up were included. The dependent variables were intra- and postoperative complications, reoperations, recurrence, and chronic pain rates. The results of unadjusted analyses were verified via multivariable analyses.

Results

Unadjusted analysis did not reveal any significant differences in the intraoperative complications (1.28 vs 1.33 %; p = 0.849); however, there were significant differences in the postoperative complications (3.20 vs 4.03 %; p = 0.036), the reoperation rate due to complications (0.84 vs 1.33 %; p = 0.023), pain at rest (4.08 vs 6.16 %; p < 0.001), pain on exertion (8.03 vs 11.44 %; p < 0.001), chronic pain requiring treatment (2.31 vs 3.83 %; p < 0.001), and the recurrence rates (0.94 vs 1.45 %; p = 0.0023). Multivariable analysis confirmed the significant impact of endoscopic repair of recurrent hernia on the outcome.

Conclusion

Comparison of perioperative and 1-year outcome for endoscopic repair of primary versus recurrent male unilateral inguinal hernia showed significant differences to the disadvantage of the recurrent operation. Therefore, endoscopic repair of recurrent inguinal hernias calls for particular competence on the part of the hernia surgeon.

Patient-Related Risk Factors for Recurrence After Inguinal Hernia Repair

Background. Several factors influence the risk of recurrence after inguinal hernia surgery; however, a systematic review and meta-analysis of patient-related risk factors for recurrence after inguinal hernia surgery has not been performed earlier. Methods. MEDLINE, Embase, and Cochrane databases were searched in June 2013 for studies evaluating patient-related risk factors for recurrence after inguinal hernia operation. Observational studies evaluating nontechnical patient-related risk factors for recurrence after inguinal hernia surgery were included. Outcome variables were grouped under patient demographics, hernia characteristics, connective tissue composition and degradation, habits and social relations, and conditions related to inguinal hernia recurrence. Results. From a total of 5061 records screened, we included 40 observational studies enrolling 720 651 inguinal hernia procedures in 714 917 patients in the systematic review. Of the 40 studies, 14 studies were included in 8 meta-analyses evaluating sex, hernia type, hernia size, re-recurrence, bilaterality, mode of admission, age, and smoking as risk factors for recurrence after inguinal hernia surgery in a total of 378 824 procedures in 375 620 patients. Conclusions. We found that female sex, direct inguinal hernias at the primary procedure, operation for a recurrent inguinal hernia, and smoking were significant risk factors for recurrence after inguinal hernia surgery. This knowledge of patient-related risk factors for recurrence after inguinal hernia surgery could be implemented in clinical practice.

Meta-analysis and review of prospective randomized trials comparing laparoscopic and Lichtenstein techniques in recurrent inguinal hernia repair

PURPOSE

The hypothesis of this meta-analysis was to assess whether laparoscopic approach shows real benefits over Lichtenstein technique in recurrent inguinal hernia repair.

METHODS

A literature search for prospective randomized trials comparing laparoscopic and Lichtenstein procedure in recurrent inguinal hernia repair was performed. Trials were reviewed for primary outcome measures: re-recurrence, chronic inguinal pain and ischemic orchitis; and for secondary outcome measures. Standardized mean difference (SMD) was calculated for continuous variables and odds ratio for dichotomous variables.

RESULTS

Seven studies comparing laparoscopic and Lichtenstein technique were considered suitable for the pooled analysis. Overall 647 patients with recurrent inguinal hernia were randomized to either laparoscopic repair (333, 51.5 %, transabdominal preperitoneal approach, TAPP and totally extraperitoneal approach, TEP) or anterior open repair (314, 48.5 %, Lichtenstein operation). Patients who underwent laparoscopic repair experienced significantly less chronic pain (9.2 % vs. 21.5 %, p = 0.003). Patients of the laparoscopic group had a significantly earlier return to normal daily activities (13.9 vs. 18.4 days, SMD = -0.68, 95 % CI = -0.94 to -0.43, p < 0.000001). Operative time was significantly longer in laparoscopic operations (62.9 vs. 54.2 min, SMD 0.46, 95 % CI 0.03, 0.89; p = 0.04). No other differences were found.

CONCLUSIONS

Laparoscopy showed reduced chronic inguinal pain and an earlier return to normal daily activities but significantly longer operative time. Despite the expected advantages, the choice between laparoscopy and other techniques still depends on local expertise availability. Only dedicated centers are able to routinely offer laparoscopy for recurrent inguinal hernia repair.

Laparoscopic versus open inguinal hernia repair

The laparoscopic approach to inguinal hernia surgery is safe and reliable. It has a similar recurrence rate as open tension-free mesh repair. Because the laparoscopic approach has less chronic postoperative pain and numbness, fast return to normal activities, and decreased incidence of wound infection and hematoma, it should be considered an appropriate approach for inguinal hernia surgery. These results can be achieved if a surgeon is proficient in the technique, has a clear understanding of the anatomy, and performs it on a regular basis. This article focuses on questions related to laparoscopic inguinal hernia surgery and provides answers based on published literature.