Open Inguinal Hernia Repair: A Network Meta-analysis Comparing Self-Gripping Mesh, Suture Fixation, and Glue Fixation

Perioperative Risk Factors for Persistent Postsurgical Pain After Inguinal Hernia Repair: Systematic Review and Meta-Analysis

Persistent postsurgical pain (PPSP) is one of the most bothersome and disabling long-term complications after inguinal hernia repair surgery. Understanding perioperative risk factors that contribute to PPSP can help identify high-risk patients and develop risk-mitigation approaches. The objective of this study was to systematically review and meta-analyze risk factors that contribute to PPSP after inguinal hernia repair. The literature search resulted in 303 papers included in this review, 140 of which were used for meta-analyses. Our results suggest that younger age, female sex, preoperative pain, recurrent hernia, postoperative complications, and postoperative pain are associated with a higher risk of PPSP. Laparoscopic techniques reduce the PPSP occurrence compared to anterior techniques such as Lichtenstein repair, and tissue-suture techniques such as Shouldice repair. The use of fibrin glue for mesh fixation was consistently associated with lower PPSP rates compared to tacks, staples, and sutures. Considerable variability was observed with PPSP assessment and reporting methodology in terms of study design, follow-up timing, clarity of pain definition, as well as pain intensity or interference threshold. High or moderate risk of bias in at least one domain was noted in >75% of studies. These may limit the generalizability of our results. Future studies should assess and report comprehensive preoperative and perioperative risk factors for PPSP adjusted for confounding factors, and develop risk-prediction models to drive stratified PPSP-mitigation trials and personalized clinical decision-making. PERSPECTIVE: This systematic review and meta-analysis summarizes the current evidence on risk factors for persistent pain after inguinal hernia repair. The findings can help identify patients at risk and test personalized risk-mitigation approaches to prevent pain. PROSPERO REGISTRATION: htttps://www.crd.york.ac.uk/prospero/display_record.php?RecordID=154663.

Chronic inguinal pain post-hernioplasty. Laparo-endoscopic surgery vs lichtenstein repair: systematic review and meta-analysis

PURPOSE

Annually, over 20 million patients worldwide undergo inguinal hernia repair procedures. Surgery stands as the recommended treatment, however, a consensus on the optimal method is lacking. This study aims to conduct an updated systematic review and meta-analysis to compare the risk of chronic inguinal pain and recurrence between laparo-endoscopic mesh repair (TAPP and TEP) versus Lichtenstein repair for inguinal hernia.

METHODS

Searches were conducted in Ovid MEDLINE, PubMed, EBSCO, Cochrane, and Google Scholar. Inclusion criteria encompassed randomized controlled trials (RCTs) involving adults, published in English and Spanish, comparing surgical outcomes among the Lichtenstein open technique, TAPP, and/or TEP. Adherence to the PRISMA guidelines was maintained in the methodology, and the CASP tool was employed to assess the quality of the articles. Statistical analysis involved mean [± standard deviation (SD)], Odds Ratio (OR), and Confidence Interval (CI).

RESULTS

Eight RCTs encompassing 1,469 patients randomized to Lichtenstein repair (n = 755) and laparo-endoscopic repair (n = 714) were included. Laparo-endoscopic repair was associated with a lower likelihood of chronic inguinal pain compared to Lichtenstein repair (OR = 0.28, 95% CI [0.30-0.56], p = 0.0001). There were no significant differences in recurrence rates between the laparo-endoscopic and the Lichtenstein group (OR = 1.03, 95% CI [0.57-1.86], p = 0.92).

CONCLUSIONS

This systematic review and meta-analysis demonstrate that laparo-endoscopic hernia surgery leads to a lower incidence of chronic inguinal pain compared to Lichtenstein repair, while maintaining similar rates of recurrence.

In vivo comparison of mesh fixation solutions in open and laparoscopic procedures for inguinal hernia repair: A meta-analysis

Background

Abdominal hernia repair surgeries involve the fixation of a surgical mesh to the abdominal wall with different means such as suture, tacks, and glues. Currently, the most effective mesh fixation system is still debated. This review compares outcomes of mesh fixation in different surgical procedures, aiding surgeons in identifying the optimal technique.

Methods

A meta-analysis was conducted according to PRISMA guidelines. Articles published between January 2003 and January 2023 were searched in electronic databases. Randomized controlled trials (RCTs) comparing mesh fixation with cyanoacrylate-based or fibrin glues with classical fixation techniques (sutures, tacks) in open and laparoscopic procedures were included.

Results

17 RCTs were identified; the cumulative study population included 3919 patients and a total of 3976 inguinal hernias. Cyanoacrylate-based and fibrin glues were used in 1639 different defects, suture and tacks in 1912 defects, self-gripping mesh in 404 cases, and no mesh fixation in 21 defects. Glue fixation resulted in lower early postoperative pain, and chronic pain occurred less frequently. The incidence of hematoma was lower with glue fixation than with mechanical fixation. Recurrence rate, seroma formation, operative and hospitalization time showed no significant differences; but significantly, a higher number of people in the glue group returned to work by 15- and 30-days after surgery when compared to the tacker and suture groups in the same time frame.

Conclusion

Cyanoacrylate and fibrin glue may be effective in reducing early and chronic pain and hematoma incidence without increasing the recurrence rate, the seroma formation, or the operative and hospitalization time.

One-year outcome after open inguinal hernia repair with self-fixated mesh: a randomized controlled trial

PURPOSE

The aim of this study was to analyze pain after surgery with the use of self-fixated meshes, which are commonly used as an alternative for sutured mesh in open inguinal hernia repair.

METHODS

This prospective randomized clinical trial was conducted from November 2018 to March 2021, with a follow-up duration of 12 months. Male patients, aged 18-85, and suitable for day case surgery, were included. The patients received the self-adhesive Adhesix™ mesh or the self-gripping Progrip™ mesh in open inguinal hernia surgery. The primary outcome was the number of additional follow-up visits due to post-operative pain. Secondary outcomes included intensity of pain, quality of life measures, and complications.

RESULTS

Two hundred seventy patients were included in this trial, 132 with Adhesix™ (A group), and 138 with Progrip™ (P-group). All patients' medical records were reviewed 12 months after surgery, and 207 patients (76.2%) completed 12-month follow-up. The number of patients needing additional follow-up visits 3-12 months after surgery were comparable (A group 3/3.0%, P-group 6/5.6%). The numeric rating scale was low at 12 months after surgery (at rest A 0.21, P 0.34, at exercise A 0.78, P 0.90). The incidence of chronic pain, that is moderate or severe pain during exercise, was 5 patients (5.2%) with Adhesix™ and 8 patients (7.4%) with Progrip™ (P = 0.333). Two hernia recurrences (1.0%) were established, one in each group.

CONCLUSION

At 1 year after hernia surgery, the use of self-gripping and self-adhesive meshes lead to successful pain reduction and quality of life improvement.

TRIAL REGISTRATION

CLINICALTRIALS

com NCT03734224.

Comparison of mesh fixation and non-fixation in transabdominal preperitoneal (TAPP) inguinal hernia repair: a randomized control trial

INTRODUCTION

Mesh fixation in inguinal hernia repair, has been a controversial subject for many years. Therefore, in this study, we evaluated and compared fixation and non-fixation of mesh in Transabdominal Preperitoneal (TAPP) Inguinal hernia repair.

METHODS

In this randomized control trial, 100 patients diagnosed with unilateral inguinal hernia were included. We divided the study population into two groups of fifty. For both groups, a 15 × 13 cm Prolene(polypropylene) mesh was used for repair. In the fixation group, mesh was fixed to the abdominal wall by endoscopic tacks, while in the non-fixation group, mesh was secured at the proper place without any fixation. Postoperative outcomes were complications, recurrence, and pain intensity after 1-, 3- and 6-months.

RESULTS

Postoperative pain intensity in the 1st month [Median of 2 and 0, (P < 0.001)], and 3rd month [Median of 0.5 and 0, (P < 0.001)], in the fixation group were significantly higher than the non-fixation group. However, 6 months after surgery, pain intensity was almost similar for both groups. In the 6th postoperative month, only one patient experienced recurrence who was in the fixation group. The rate of recurrence and urinary retention between the groups was not significant.

CONCLUSION

It was observed that until 6 months after surgery patients who received the non-fixating method of TAPP repair experienced lower levels of pain in comparison to the fixation group while other complications did not differ between the two groups. This trail was registered at www.irct.ir with Trial Registration Number of IRCT20210224050491N1.

Cost-effectiveness analysis of mesh fixation techniques for laparoscopic and open inguinal hernia surgeries

Purpose

This study reports economic evaluation of mesh fixation in open and laparoscopic hernia repair from a prospective real-world cohort study, using cost-effectiveness analysis (CEA) and cost-utility analysis (CUA).

Methods

A prospective real-world cohort study was conducted in two university-based hospitals in Thailand from November 2018 to 2019. Patient data on hernia features, operative approaches, clinical outcomes, associated cost data, and quality of life were collected. Models were used to determine each group’s treatment effect, potential outcome means, and average treatment effects. An incremental cost-effectiveness ratio was used to evaluate the incremental risk of hernia recurrences.

Results

The 261 patients in this study were divided into six groups: laparoscopic with tack (LT, n = 47), glue (LG, n = 26), and self-gripping mesh (LSG, n = 30), and open with suture (OS, n = 117), glue (OG, n = 18), and self-gripping mesh (OSG, n = 23). Hernia recurrence was most common in LSG. The mean utility score was highest in OG and OSG (both 0.99). Treatment costs were generally higher for laparoscopic than open procedures. The cost-effectiveness plane for utility and hernia recurrence identified LSG as least cost effective. Cost-effectiveness acceptability curves identified OG as having the highest probability of being cost effective at willingness to pay levels between $0 and $3,300, followed by OSG.

Conclusion

Given the similarity of hernia recurrence among all major procedures, the cost of surgery may impact the decision. According to our findings, open hernia repair with adhesive or self-gripping mesh appears most cost-effective.

Supplementary Information

The online version contains supplementary material available at 10.1186/s12913-022-08491-4.

Mesh fixation techniques for inguinal hernia repair: an overview of systematic reviews of randomised controlled trials

PURPOSE

Inguinal hernia repair using surgical mesh is a very common surgical operation. Currently, there is no consensus on the best technique for mesh fixation. We conducted an overview of existing systematic reviews (SRs) of randomised controlled trials to compare the risk of chronic pain and recurrence following open and laparoscopic inguinal hernia repairs using various mesh fixation techniques.

METHODS

We searched major electronic databases in April 2020 and assessed the methodological quality of identified reviews using the AMSTAR-2 tool.

RESULTS

We identified 20 SRs of variable quality assessing suture, self-gripping, glue, and mechanical fixation. Across reviews, the risk of chronic pain after open mesh repair was lower with glue fixation than with suture and comparable between self-gripping and suture. Incidence of chronic pain was lower with glue fixation than with mechanical fixation in laparoscopic repairs. There were no significant differences in recurrence rates between fixation techniques in open and laparoscopic mesh repairs, although fewer recurrences were reported with suture. Many reviews reported wide confidence intervals around summary estimates. Despite no clear evidence of differences among techniques, two network meta-analyses (one assessing open repairs and one laparoscopic repairs) ranked glue fixation as the best treatment for reducing pain and suture for reducing the risk of recurrence.

CONCLUSION

Glue fixation may be effective in reducing the incidence of chronic pain without increasing the risk of recurrence. Future research should consider both the effectiveness and cost-effectiveness of fixation techniques alongside the type of mesh and the size and location of the hernia defect.

Comparison of glue versus suture mesh fixation for primary open inguinal hernia mesh repair by Lichtenstein technique: a systematic review and meta-analysis

BACKGROUND

The use of glue as a mesh fixator in open Lichtenstein inguinal hernia repair (IHR) has gained popularity to reduce recurrence and postoperative complications. This meta-analysis aims to provide an up-to-date review to compare glue versus suture fixation in primary open Lichtenstein IHR.

METHODS

PubMed, Embase, The Cochrane Library, Web of Science, and Springer were systematically searched till June 2021 for randomized controlled trials (RCTs) comparing glue versus suture fixation in open Lichtenstein IHR. Primary outcomes were early (at 1 year) and late recurrence (5 years or more). Secondary outcomes were the length of operation, postoperative haematoma and seroma, and chronic pain at 1 year.

RESULTS

A total of 17 RCTs with 3150 hernias (glue n = 1582, suture n = 1568) were included. Only three studies reported late recurrence. Glue fixation was associated with shorter operative duration (MD - 4.17, 95% CI - 4.82, - 3.52; p < 0.001 and a lower incidence of haematoma formation (OR 0.51, 95% CI 0.32, 0.81; p = 0.004). There was no significant difference in postoperative seroma (OR 0.72, 95% CI 0.35, 1.49; p = 0.38), chronic pain after 1 year (OR 1.10, 95% CI 0.73, 1.65; p = 0.65), early recurrence (OR 1.11, 95% CI 0.45, 2.76; p = 0.81, I² = 0%), and late recurrence (OR 1.23, 95% CI 0.59, 2.59; p = 0.59, I² = 0%).

CONCLUSION

Early and late recurrence were comparable between glue and suture fixation in open Lichtenstein IHR patients. Glue fixation had shorter operating time and lower haematoma formation than suture fixation. Chronic pain and seroma formation were comparable. More RCTs should report long-term outcomes.

Mesh-fixation technique for inguinal hernia repair: umbrella review

Background

Mesh-based repair is the standard of surgical care for symptomatic inguinal hernias. Many systematic reviews and meta-analyses (SRMAs) addressed various aspects of these procedures. This umbrella review aimed to report the evidence from all previous SRMAs for open and laparoscopic inguinal hernia repair.

Methods

SRMAs were identified from MEDLINE, Scopus, Cochrane, Embase, DARE, PROSPERO, CINAHL, JBISRIS, EPPI-Centre, Wiley Online Library and ScienceDirect database according to PRISMA guidelines. Data including mesh-fixation techniques and surgical approach were extracted from selected SRMAs. The corrected covered area was calculated to address study overlap across reviews, and an excess significance test was used to assess potential bias. The outcomes of interest were hernia recurrence, chronic groin pain, operating time, postoperative pain, duration of hospital stay, return to daily life activities, and postoperative complication.

Results

Thirty SRMAs were included between 2010 and 2019: 16 focused on open repair, and 14 focused on laparoscopic repair, with a high degree of overlap (open repairs, 41 per cent; laparoscopic repairs, 30–57 per cent). Sufficient evidence was available on hernia recurrence, chronic groin pain, and operative time. Effects of glue on hernia recurrence were inconclusive in open and laparoscopy approaches, P = 0.816 and 0.946 respectively. Glue was significantly associated with lower persistent groin pain, in open repair (versus suture) and in laparoscopic repair (versus tack). SRMAs suggested that self-gripping mesh was associated with shorter operating time in open surgery, although with only a few minutes of improvement (0.36–7.85 min, P < 0.001).

Conclusion

In this umbrella review, chronic groin pain and operating time were the only outcomes for which there was sufficient evidence supporting the effectiveness respectively of glue and self-gripping mesh.

Postoperative pain and pain-related health-care contacts after open inguinal hernia repair with Adhesix™ and Progrip™: a randomized controlled trial

Purpose

Self-fixed mesh is an alternative to suture mesh fixation in inguinal hernia repair. The aim of this study was to evaluate postoperative pain after open inguinal hernia surgery using self-fixed meshes.

Methods

A randomized clinical trial comparing self-adhesive mesh (Adhesix™) and self-gripping mesh (Progrip™) was conducted from November 2018 through March 2021. Patients included were male, 18–85 years old, and suitable for day case surgery. The primary endpoint was the number of patients needing follow-up visits due to postoperative pain during the first 3 postoperative months. Secondary endpoints included the intensity of pain, the time of return to work and normal daily activities, quality of life measures and postoperative complications.

Results

270 patients were enrolled, 132 received Adhesix™ mesh (A group) and 138 Progrip™ mesh (P group), 231 (85.6%) completed 1- or 3-month follow-up. The number of patients needing follow-up for postoperative pain was significantly higher in the P group (19 vs. 4, p = 0.001). The P group had higher numeric rating scale of pain while coughing (P 0.50 vs. A 0.20, p = 0.024) and during exercise (P 1.02 vs. A 0.60, p = 0.057) at 3 months postoperatively. The time of return to normal activity was 16.6 days in the A group and 22.9 days in the P group, (p = 0.004). The postoperative day being fit for work was sooner for the A group (14.3 days vs 17.8 days, p = 0.009).

Conclusion

This study demonstrated an advantage of self-adhesive mesh over self-gripping mesh with respect to acute postoperative pain and thus faster recovery after surgery.

Changing the innate consensus about mesh fixation in trans-abdominal preperitoneal laparoscopic inguinal hernioplasty in adults: Short and long term outcome. Randomized controlled clinical trial

INTRODUCTION

Inguinal hernioplasty is the standard treatment for inguinal hernia in adults. Mesh fixation was used to keep mesh in place for which various mesh fixation techniques have been used in laparoscopic inguinal hernia repair in adults, but their effectiveness has remained inconclusive.

AIM OF THE WORK

to evaluate non fixation method of mesh laparoscopic inguinal hernioplasty as safe and effective as regard short and long term outcomes.

PATIENTS AND METHODS

Over the period from July 2013 to July 2018, 798 patients with oblique inguinal hernias undergoing Trans abdominal preperitoneal technique (TAPP) were randomized into 3 groups: Group A; mesh non fixation 266 patients. Group B; tacker mesh fixation 266 patients Group C: Cyanoacrylic tissue glues (Histoacryl) mesh fixation 266 patients. Clinical effects were assessed by the following variables: intraoperative data, postoperative outcome as regard recurrence rate, postoperative pain [on visual analogue score (VAS)], analgesic consumption, operation time, hospital stay, and patient costs. Follow up was 18 months.

RESULTS

There was no statistical difference between groups (A) and Group (C) regarding operative time, postoperative complications, and length of hospital stay and risk of chronic groin pain, postoperative pain score. In Group (B): the postoperative pain and complications were higher. There were 5 cases of hernia recurrence in all groups, but no significant differences among the three groups.

CONCLUSION

Tacker Mesh fixation increased the risk of chronic groin pain. Pain score was higher with tacker mesh fixation. Laparoscopic TAPP inguinal hernia repair without tacker mesh fixation was safe and feasible with no significant increase in recurrence rates. Furthermore, mesh fixation with tacker procedure increased the risk of postoperative complications and patient costs. All ethical approval was given by our Faculty of Medicine medical ethical committee.

A new semiresorbable mesh for primary inguinal repair: a preliminary observational study on quality of life and safety

BACKGROUND

A currently unsolved problem of open inguinal hernia repair (IHR) is chronic postoperative inguinal pain (CPIP), which affects 10-12% of patients after IHR. In the present paper, we explored the results of a newly designed partially absorbable mesh made of polypropylene and polylactic acid (HybridMesh^®) for open hernia repair and its impact on postoperative safety, efficacy, comfort and pain.

METHODS

A prospective multicentric pilot trial was conducted in third-referral centers across Italy (n = 5). Inclusion criteria were unilateral primary inguinal hernia in patients of both genders and BMI < 30 kg/m². All patients were submitted to elective Lichtenstein mesh hernia repair under local anesthesia with HybridMesh. Primary outcome measure was the evaluation of Carolina Comfort Scale and modifications at 2 years after surgery and its correlation with surgical variables; secondary outcomes were postoperative early and late morbidity, recurrence and postoperative early quality of life.

RESULTS

Between 2015 and 2016, 125 (5 female) patients were operated, 2-year follow-up rate was 100%. The surgical site occurrence rate was 28% without the need of procedural interventions. Twenty-four months after surgery, no case of severe CPIP was recorded and altered global CCS score was present in 16 patients (13.0%). At univariate analysis, CCS score was negatively affected by fixation with sutures (OR 3.949; 95% CI 1.334-13.300), with no effect shown on multivariate analysis. Alterations in pain and movement limitations domains of CCS were observed in 9.7% of patients, at univariate analysis; they occurred more frequently when the mesh was sutured (OR 4.437; 95% CI 1.387-17.025) and in patients suffering from SSO (ecchymosis: OR 3.269; 95% CI 1.032-10.405); however, no effect was shown on multivariate analysis. Two recurrences (1.6%) were identified within the first postoperative year.

CONCLUSIONS

The results of this study support the safety, efficacy and good tolerability of HybridMesh as a device to treat primary unilateral inguinal hernia during open anterior approach. Further studies are needed to clarify its role in comparison to currently available devices at longer follow-ups.

Mesh fixation technique for inguinal hernia repair: protocol for an umbrella review with integrated and updated network meta-analysis

INTRODUCTION

Inguinal hernia mesh repair is the standard care for symptomatic inguinal hernia. Mesh fixation is used to keep mesh in place for which various mesh fixation techniques have been used in open and laparoscopic inguinal hernia repair, but their effectiveness has remained inconclusive. Therefore, we developed a protocol for an umbrella review in order to summarise the evidences with integrate and update data of different mesh fixation techniques in both open and laparoscopic inguinal hernia repair.

METHODS AND ANALYSIS

Previous systematic reviews and meta-analyses will be identified from Medline, Scopus, Cochrane Databases, EMBASE, Database of Abstracts of Reviews of Effects, PROSPERO Register, CINAHL, JBISRIS, EPPI-Centre, Wiley Online Library and Science Direct database. Two reviewers will independently determine studies for eligibility. Disagreement will be solved by consensus and arbitrated by the third reviewer. Data extraction will also be performed by two independent reviewers. For umbrella review, a descriptive analysis will be applied to describe evidence of mesh fixation effectiveness. Overlapping studies and excess significance test will be performed to assess whether previous evidences are bias. In addition, individual studies from meta-analysis and additional published studies will be pooled using network meta-analyses. We will use I² statistic and Cochran's Q test to assess heterogeneity. Risk of bias and publication bias, if appropriate, will be evaluated, as well as overall strength of the evidence.

ETHICS AND DISSEMINATION

This protocol has been registered with PROSPERO and approved with Institutional Review Board, Faculty of Medicine Vajira Hospital, Navamindradhiraj University, Bangkok, Thailand (COA 167/2018). The results will be published in peer-reviewed journal.

PROSPERO REGISTRATION NUMBER

CRD42018111773.

Laparoscopic totally extra-peritoneal groin hernia repair with self-gripping polyester mesh: a series of 780 repairs

BACKGROUND

Laparoscopic groin hernia repair is an increasingly common procedure with benefits of reduced post-operative pain and infection. Post-operative chronic pain remains an ongoing concern in about 10% of patients. Parietex ProGrip™, a polyester self-gripping mesh, has a theoretical benefit of avoiding tacks for mesh-fixation. This case series reflects our long-term experience of this technique.

METHODS

We conducted a retrospective case series from November 2011 to December 2017. Patients were identified through an operative Medicare Benefits Schedule item number search. Clinical documentation was reviewed with length of stay, mesh infection, chronic pain, recurrence and re-operation as primary data points.

RESULTS

A total of 514 patients underwent 780 laparoscopic inguinal hernia repairs with self-gripping polyester mesh during this period. There were 53 female (10.3%) and 461 male patients (89.7%). Unilateral hernia repair was performed in 248 patients (48.2%) and bilateral repair in 266 patients (51.8%). Almost all repairs (779, 99.8%) were primary hernias. There were no mesh infections. Four recurrences were noted (0.51%) and three of these subsequently underwent open redo-hernia repairs (0.38%). Post-operative follow-up was up to 4.4 years.

CONCLUSIONS

Our series of laparoscopic groin hernia repair with self-gripping mesh demonstrate this is a safe and reliable mesh and effective technique with low recurrence rates.

Primary inguinal hernia: systematic review and Bayesian network meta-analysis comparing open, laparoscopic transabdominal preperitoneal, totally extraperitoneal, and robotic preperitoneal repair

PURPOSE

The Open Lichtenstein technique, the Laparoscopic Trans-Abdominal PrePeritoneal (TAPP), the Totally Extra Peritoneal (TEP), and the robotic TAPP (rTAPP) are commonly performed. The aim of the present network meta-analysis was to globally compare short-term outcomes within these major surgical techniques for primary unilateral inguinal hernia repair.

METHODS

PubMed, EMBASE, and Web of Science were consulted. A fully Bayesian network meta-analysis was performed.

RESULTS

Sixteen studies (51.037 patients) were included. Overall, 35.5% underwent Open, 33.5% TAPP, 30.7% TEP, and 0.3% rTAPP. The postoperative seroma risk ratio (RR) was comparable considering TAPP vs. Open (RR 0.91; 95% CrI 0.50-1.62), TEP vs. Open (RR 0.64; 95% CrI 0.32-1.33), TEP vs. TAPP (RR 0.70; 95% CrI 0.39-1.31), and rTAPP vs. Open (RR 0.98; 95% CrI 0.37-2.51). The postoperative chronic pain RR was similar for TAPP vs. Open (RR 0.53; 95% CrI 0.27-1.20), TEP vs. Open (RR 0.86; 95% CrI 0.48-1.16), and TEP vs. TAPP (RR 1.70; 95% CrI 0.63-3.20). The recurrence RR was comparable when comparing TAPP vs. Open (RR 0.96; 95% CrI 0.57-1.51), TEP vs. Open (RR 1.0; 95% CrI 0.65-1.61), TEP vs. TAPP (RR 1.10; 95% CrI 0.63-2.10), and rTAPP vs. Open (RR 0.98; 95% CrI 0.45-2.10). No differences were found in term of postoperative hematoma, surgical site infection, urinary retention, and hospital length of stay.

CONCLUSIONS

This study suggests that Open, TAPP, TEP, and rTAPP seem comparable in the short term. The surgical management of inguinal hernia is evolving and the effect of the adoption of innovative minimally invasive techniques should be further investigated in the long term. Ultimately, the choice of the most suitable treatment should be based on individual surgeon expertise and tailored on each patient.

Modified Implantation of Self-Adhesive Mesh in Laparoscopic Total Extraperitoneal Inguinal Hernia Repair

Introduction: The self-adhesive mesh has become increasingly popular since its launch and has been proven to be reliable in laparoscopic hernia reparation. However, self-adhesive mesh may encounter unexpected adhesions during operation because one side of the mesh was covered with microgrips. Objective: Performing a modified technique of self-adhesive mesh implantation to avoid unexpected adhesions to the mesh itself and to the surrounding tissues in the operation space. Methods: We carried out a modified self-adhesive mesh implantation during May 2017 and March 2018. The modification was using a plastic membrane to cover the microgrips side of the mesh, and then rolling up the mesh to a cigarette shape. The mesh was inserted into the groin through a 10 mm trocar, and it was opened up with the membrane being removed meanwhile. Results: A total of 21 cases of laparoscopic total extraperitoneal inguinal hernia repair were successfully performed. The mesh could be conveniently put on the right place with no unexpected adhesions and the operation time was greatly shortened by using this modified technique. Conclusion: Putting a plastic membrane on the microgrips side of the self-adhesive mesh could avoid the mesh adhering itself when rolling up and could be easy to spread up the mesh in the operative field without unexpected adhesions, which simplified the surgical process and shortened the surgical duration.