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Tran E, Summers Z, Parker D, Townend P. Open sandwich mesh repair of a large recurrent incisional flank hernia. BMJ Case Rep 2024; 17:e259361. [PMID: 38670564 PMCID: PMC11057313 DOI: 10.1136/bcr-2023-259361] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/06/2024] [Indexed: 04/28/2024] Open
Affiliation(s)
- Elisa Tran
- RBWH, Herston, Queensland, Australia
- Medicine and Dentistry, Griffith University School of Medicine and Dentistry, Gold Coast, Queensland, Australia
| | - Zara Summers
- General Surgery, Gold Coast University Hospital, Southport, Queensland, Australia
| | - David Parker
- General Surgery, Gold Coast University Hospital, Southport, Queensland, Australia
| | - Philip Townend
- General Surgery, Gold Coast University Hospital, Southport, Queensland, Australia
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Liang K, Ding C, Li J, Yao X, Yu J, Wu H, Chen L, Zhang M. A Review of Advanced Abdominal Wall Hernia Patch Materials. Adv Healthc Mater 2024; 13:e2303506. [PMID: 38055999 DOI: 10.1002/adhm.202303506] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2023] [Revised: 12/05/2023] [Indexed: 12/08/2023]
Abstract
Tension-free abdominal wall hernia patch materials (AWHPMs) play an important role in the repair of abdominal wall defects (AWDs), which have a recurrence rate of <1%. Nevertheless, there are still significant challenges in the development of tailored, biomimetic, and extracellular matrix (ECM)-like AWHPMs that satisfy the clinical demands of abdominal wall repair (AWR) while effectively handling post-operative complications associated with abdominal hernias, such as intra-abdominal visceral adhesion and abnormal healing. This extensive review presents a comprehensive guide to the high-end fabrication and the precise selection of these advanced AWHPMs. The review begins by briefly introducing the structures, sources, and properties of AWHPMs, and critically evaluates the advantages and disadvantages of different types of AWHPMs for AWR applications. The review subsequently summarizes and elaborates upon state-of-the-art AWHPM fabrication methods and their key characteristics (e.g., mechanical, physicochemical, and biological properties in vitro/vivo). This review uses compelling examples to demonstrate that advanced AWHPMs with multiple functionalities (e.g., anti-deformation, anti-inflammation, anti-adhesion, pro-healing properties, etc.) can meet the fundamental clinical demands required to successfully repair AWDs. In particular, there have been several developments in the enhancement of biomimetic AWHPMs with multiple properties, and additional breakthroughs are expected in the near future.
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Affiliation(s)
- Kaiwen Liang
- College of Material Engineering, Fujian Agriculture and Forestry University, Fuzhou, Fujian, 350002, P. R. China
| | - Cuicui Ding
- College of Ecological Environment and Urban Construction, Fujian University of Technology, Fuzhou, Fujian, 350118, P. R. China
| | - Jingyi Li
- School of Basic Medicine, Fujian Medical University, Fuzhou, Fujian, 350122, P. R. China
| | - Xiao Yao
- College of Ecological Environment and Urban Construction, Fujian University of Technology, Fuzhou, Fujian, 350118, P. R. China
| | - Jingjing Yu
- College of Ecological Environment and Urban Construction, Fujian University of Technology, Fuzhou, Fujian, 350118, P. R. China
| | - Hui Wu
- College of Material Engineering, Fujian Agriculture and Forestry University, Fuzhou, Fujian, 350002, P. R. China
| | - Lihui Chen
- College of Material Engineering, Fujian Agriculture and Forestry University, Fuzhou, Fujian, 350002, P. R. China
| | - Min Zhang
- College of Material Engineering, Fujian Agriculture and Forestry University, Fuzhou, Fujian, 350002, P. R. China
- National Forestry & Grassland Administration Key Laboratory for Plant Fiber Functional Materials, Fuzhou, Fujian, 350000, P. R. China
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Kroh A, Zufacher M, Eickhoff R, Heise D, Helmedag M, Ulmer F, Neumann UP, Conze J, Hilgers RD, Binnebösel M. No difference in outcomes between large- and small-pore meshes in a prospective, randomized, multicenter trial investigating open retromuscular meshplasty for incisional hernia repair. Langenbecks Arch Surg 2023; 408:22. [PMID: 36635466 PMCID: PMC9836964 DOI: 10.1007/s00423-022-02751-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2022] [Accepted: 10/09/2022] [Indexed: 01/14/2023]
Abstract
STUDY DESIGN A randomized, controlled, prospective multicenter clinical trial with a parallel group design was initiated in eight surgical centers to compare a large-pore polypropylene mesh (Ultrapro®) to a small-pore polypropylene mesh (Premilene®) within a standardized retromuscular meshplasty for incisional hernia repair. METHODS Between 2004 and 2006, patients with a fascial defect with a minimum diameter of 4 cm after vertical midline laparotomy were recruited for the trial. Patients underwent retromuscular meshplasty with either a large-pore or a small-pore mesh to identify the superiority of the large-pore mesh. Follow-up visits were scheduled at 5 and 21 days and 4, 12, and 24 months after surgery. A clinical examination, a modified short form 36 (SF-36®), a daily activity questionnaire, and an ultrasound investigation of the abdominal wall were completed at every follow-up visit. The primary outcome criterion was foreign body sensation at the 12-month visit, and the secondary endpoint criteria were the occurrence of hematoma, seroma, and chronic pain within 24 months postoperatively. RESULTS In 8 centers, 181 patients were included in the study. Neither foreign body sensation within the first year after surgery (27.5% Ultrapro®, 32.2% Premilene®) nor the time until the first occurrence of foreign body sensation within the first year was significantly different between the groups. Regarding the secondary endpoints, no significant differences could be observed. At the 2-year follow-up, recurrences occurred in 5 Ultrapro® patients (5.5%) and 4 Premilene® patients (4.4%). CONCLUSION Despite considerable differences in theoretical and experimental works, we have not been able to identify differences in surgical or patient-reported outcomes between the use of large- and small-pore meshes for retromuscular incisional hernia repair. TRIAL REGISTRATION Clinical Trials NCT04961346 (16.06.2021) retrospectively registered.
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Affiliation(s)
- Andreas Kroh
- Department of General, Visceral and Transplantation Surgery, RWTH Aachen University Hospital, Aachen, Germany.
| | - Markus Zufacher
- Department of General, Visceral and Transplantation Surgery, RWTH Aachen University Hospital, Aachen, Germany
- Department of General and Visceral Surgery, Klinikum Bielefeld, University Hospital OWL of the University of Bielefeld, Bielefeld, Germany
| | - Roman Eickhoff
- Department of General, Visceral and Transplantation Surgery, RWTH Aachen University Hospital, Aachen, Germany
| | - Daniel Heise
- Department of General, Visceral and Transplantation Surgery, RWTH Aachen University Hospital, Aachen, Germany
| | - Marius Helmedag
- Department of General, Visceral and Transplantation Surgery, RWTH Aachen University Hospital, Aachen, Germany
| | - Florian Ulmer
- Department of General, Visceral and Transplantation Surgery, RWTH Aachen University Hospital, Aachen, Germany
- Department of Surgery, Maastricht University Medical Center (MUMC), Maastricht, The Netherlands
| | - Ulf P Neumann
- Department of General, Visceral and Transplantation Surgery, RWTH Aachen University Hospital, Aachen, Germany
- Department of Surgery, Maastricht University Medical Center (MUMC), Maastricht, The Netherlands
| | - Joachim Conze
- UM Hernienzentrum Dr. Conze, Arabella Klinikum München, Munich, Germany
| | - Ralf-Dieter Hilgers
- Institute for Medical Statistics, RWTH Aachen University Hospital, Aachen, Germany
| | - Marcel Binnebösel
- Department of General, Visceral and Transplantation Surgery, RWTH Aachen University Hospital, Aachen, Germany
- Department of General and Visceral Surgery, Klinikum Bielefeld, University Hospital OWL of the University of Bielefeld, Bielefeld, Germany
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Helmedag MJ, Heise D, Eickhoff RM, Schmitz SM, Mechelinck M, Emonts C, Bolle T, Gries T, Neumann UP, Klink CD, Lambertz A. Ultra-Fine Polyethylene Hernia Meshes Improve Biocompatibility and Reduce Intraperitoneal Adhesions in IPOM Position in Animal Models. Biomedicines 2022; 10:biomedicines10061294. [PMID: 35740316 PMCID: PMC9220266 DOI: 10.3390/biomedicines10061294] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2022] [Revised: 05/15/2022] [Accepted: 05/27/2022] [Indexed: 11/16/2022] Open
Abstract
(1) Introduction: The intraperitoneal onlay mesh technique (IPOM) is widely used to repair incisional hernias. This method has advantages but suffers from complications due to intraperitoneal adhesion formation between the mesh and intestine. An ideal mesh minimizes adhesions and shows good biocompatibility. To address this, newly developed multifilamentous polyethylene (PET) meshes were constructed from sub-macrophage-sized monofilaments and studied regarding biocompatibility and adhesion formation. (2) Methods: We investigated fine (FPET, 72 filaments, 11 µm diameter each) and ultra-fine multifilament (UFPET, 700 filaments, 3 µm diameter each) polyethylene meshes for biocompatibility in subcutaneous implantation in rats. Adhesion formation was analyzed in the IPOM position in rabbits. Geometrically identical mono-filamentous polypropylene (PP) Bard Soft® PP meshes were used for comparison. Histologic and immune-histologic foreign body reactions were assessed in 48 rats after 7 or 21 days (four mesh types, with two different mesh types per rat; n = 6 per mesh type). Additionally, two different mesh types each were placed in the IPOM position in 24 rabbits to compile the Diamond peritoneal adhesion score after the same timeframes. The biocompatibility and adhesion score differences were analyzed with the Kruskal–Wallis nonparametric statistical test. (3) Results: Overall, FPET and, especially, UFPET showed significantly smaller foreign body granulomas compared to PP meshes. Longer observation periods enhanced the differences. Immunohistology showed no significant differences in the cellular immune response and proliferation. UFPET demonstrated significantly reduced peritoneal adhesion formation compared to all other tested meshes after 21 days. (4) Conclusions: Overall, FPET and, especially, UFPET demonstrated their suitability for IPOM hernia meshes in animal models by improving major aspects of the foreign body reaction and reducing adhesion formation.
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Affiliation(s)
- Marius J. Helmedag
- Department of General, Visceral and Transplantation Surgery, RWTH Aachen University Hospital, 52074 Aachen, Germany; (D.H.); (R.M.E.); (S.M.S.); (U.P.N.); (C.D.K.); (A.L.)
- Correspondence:
| | - Daniel Heise
- Department of General, Visceral and Transplantation Surgery, RWTH Aachen University Hospital, 52074 Aachen, Germany; (D.H.); (R.M.E.); (S.M.S.); (U.P.N.); (C.D.K.); (A.L.)
| | - Roman M. Eickhoff
- Department of General, Visceral and Transplantation Surgery, RWTH Aachen University Hospital, 52074 Aachen, Germany; (D.H.); (R.M.E.); (S.M.S.); (U.P.N.); (C.D.K.); (A.L.)
| | - Sophia M. Schmitz
- Department of General, Visceral and Transplantation Surgery, RWTH Aachen University Hospital, 52074 Aachen, Germany; (D.H.); (R.M.E.); (S.M.S.); (U.P.N.); (C.D.K.); (A.L.)
| | - Mare Mechelinck
- Department of Anesthesiology, Uniklinik RWTH Aachen, 52074 Aachen, Germany;
| | - Caroline Emonts
- Institut für Textiltechnik, RWTH Aachen University, 52074 Aachen, Germany; (C.E.); (T.B.); (T.G.)
| | - Tim Bolle
- Institut für Textiltechnik, RWTH Aachen University, 52074 Aachen, Germany; (C.E.); (T.B.); (T.G.)
| | - Thomas Gries
- Institut für Textiltechnik, RWTH Aachen University, 52074 Aachen, Germany; (C.E.); (T.B.); (T.G.)
| | - Ulf Peter Neumann
- Department of General, Visceral and Transplantation Surgery, RWTH Aachen University Hospital, 52074 Aachen, Germany; (D.H.); (R.M.E.); (S.M.S.); (U.P.N.); (C.D.K.); (A.L.)
| | - Christian Daniel Klink
- Department of General, Visceral and Transplantation Surgery, RWTH Aachen University Hospital, 52074 Aachen, Germany; (D.H.); (R.M.E.); (S.M.S.); (U.P.N.); (C.D.K.); (A.L.)
| | - Andreas Lambertz
- Department of General, Visceral and Transplantation Surgery, RWTH Aachen University Hospital, 52074 Aachen, Germany; (D.H.); (R.M.E.); (S.M.S.); (U.P.N.); (C.D.K.); (A.L.)
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Pérez-Köhler B, Benito-Martínez S, Gómez-Gil V, Rodríguez M, Pascual G, Bellón JM. New Insights into the Application of 3D-Printing Technology in Hernia Repair. MATERIALS 2021; 14:ma14227092. [PMID: 34832493 PMCID: PMC8623842 DOI: 10.3390/ma14227092] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/18/2021] [Revised: 11/18/2021] [Accepted: 11/19/2021] [Indexed: 12/29/2022]
Abstract
Abdominal hernia repair using prosthetic materials is among the surgical interventions most widely performed worldwide. These materials, or meshes, are implanted to close the hernial defect, reinforcing the abdominal muscles and reestablishing mechanical functionality of the wall. Meshes for hernia repair are made of synthetic or biological materials exhibiting multiple shapes and configurations. Despite the myriad of devices currently marketed, the search for the ideal mesh continues as, thus far, no device offers optimal tissue repair and restored mechanical performance while minimizing postoperative complications. Additive manufacturing, or 3D-printing, has great potential for biomedical applications. Over the years, different biomaterials with advanced features have been successfully manufactured via 3D-printing for the repair of hard and soft tissues. This technological improvement is of high clinical relevance and paves the way to produce next-generation devices tailored to suit each individual patient. This review focuses on the state of the art and applications of 3D-printing technology for the manufacture of synthetic meshes. We highlight the latest approaches aimed at developing improved bioactive materials (e.g., optimizing antibacterial performance, drug release, or device opacity for contrast imaging). Challenges, limitations, and future perspectives are discussed, offering a comprehensive scenario for the applicability of 3D-printing in hernia repair.
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Affiliation(s)
- Bárbara Pérez-Köhler
- Departamento de Medicina y Especialidades Médicas, Facultad de Medicina y Ciencias de la Salud, Universidad de Alcalá, 28805 Alcalá de Henares, Spain; (B.P.-K.); (S.B.-M.)
- Biomedical Networking Research Centre of Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN), 28029 Madrid, Spain; (V.G.-G.); (M.R.); (J.M.B.)
- Ramón y Cajal Health Research Institute (IRYCIS), 28034 Madrid, Spain
| | - Selma Benito-Martínez
- Departamento de Medicina y Especialidades Médicas, Facultad de Medicina y Ciencias de la Salud, Universidad de Alcalá, 28805 Alcalá de Henares, Spain; (B.P.-K.); (S.B.-M.)
- Biomedical Networking Research Centre of Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN), 28029 Madrid, Spain; (V.G.-G.); (M.R.); (J.M.B.)
- Ramón y Cajal Health Research Institute (IRYCIS), 28034 Madrid, Spain
| | - Verónica Gómez-Gil
- Biomedical Networking Research Centre of Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN), 28029 Madrid, Spain; (V.G.-G.); (M.R.); (J.M.B.)
- Departamento de Cirugía, Ciencias Médicas y Sociales, Facultad de Medicina y Ciencias de la Salud, Universidad de Alcalá, 28805 Alcalá de Henares, Spain
- Departamento de Ciencias Biomédicas, Facultad de Medicina y Ciencias de la Salud, Universidad de Alcalá, 28805 Alcalá de Henares, Spain
| | - Marta Rodríguez
- Biomedical Networking Research Centre of Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN), 28029 Madrid, Spain; (V.G.-G.); (M.R.); (J.M.B.)
- Ramón y Cajal Health Research Institute (IRYCIS), 28034 Madrid, Spain
- Departamento de Cirugía, Ciencias Médicas y Sociales, Facultad de Medicina y Ciencias de la Salud, Universidad de Alcalá, 28805 Alcalá de Henares, Spain
| | - Gemma Pascual
- Departamento de Medicina y Especialidades Médicas, Facultad de Medicina y Ciencias de la Salud, Universidad de Alcalá, 28805 Alcalá de Henares, Spain; (B.P.-K.); (S.B.-M.)
- Biomedical Networking Research Centre of Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN), 28029 Madrid, Spain; (V.G.-G.); (M.R.); (J.M.B.)
- Ramón y Cajal Health Research Institute (IRYCIS), 28034 Madrid, Spain
- Correspondence:
| | - Juan Manuel Bellón
- Biomedical Networking Research Centre of Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN), 28029 Madrid, Spain; (V.G.-G.); (M.R.); (J.M.B.)
- Ramón y Cajal Health Research Institute (IRYCIS), 28034 Madrid, Spain
- Departamento de Cirugía, Ciencias Médicas y Sociales, Facultad de Medicina y Ciencias de la Salud, Universidad de Alcalá, 28805 Alcalá de Henares, Spain
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Haddow O, Mathew E, Lamprou DA. Fused deposition modelling 3D printing proof-of-concept study for personalised inner ear therapy. J Pharm Pharmacol 2021; 74:1489-1497. [PMID: 34665264 DOI: 10.1093/jpp/rgab147] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2021] [Accepted: 09/23/2021] [Indexed: 02/04/2023]
Abstract
OBJECTIVES There is a requirement within ear therapeutics for a delivery system capable of safely delivering controlled doses to the inner ear. However, the anatomy and sensitivity of the inner ear make current delivery systems problematic and often ineffective. Therefore, a new delivery system is required to overcome these issues and provide a more efficacious system in the treatment of inner ear disease. This study assesses the potential of 3D printing (3DP) as a fabrication method for an implantable drug delivery system (DDS) to the inner ear. KEY FINDINGS Three implantable designs of varying geometry were produced with fused deposition modelling (FDM) 3DP, each loaded with 0.25%, 0.5% and 1% levofloxacin; filaments prepared by hot-melt extrusion. Each implant was effective in providing sustained, therapeutic release of levofloxacin for at least 4 days and as such would be effective in therapeutic treatment of many common inner ear diseases, such as otitis media or Ménière's disease. CONCLUSIONS This proof-of-concept research was successful in utilising FDM as a fabrication method for a DDS capable of providing prolonged release directly to the inner ear and highlights the viability of 3DP in the fabrication of an inner ear DDS.
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Affiliation(s)
- Oisin Haddow
- School of Pharmacy, Queen's University Belfast, Belfast, UK
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Characterization of innate and adaptive immune cells involved in the foreign body reaction to polypropylene meshes in the human abdomen. Hernia 2021; 26:309-323. [PMID: 33788008 PMCID: PMC8881270 DOI: 10.1007/s10029-021-02396-7] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2020] [Accepted: 03/10/2021] [Indexed: 12/25/2022]
Abstract
Background Polypropylene (PP) mesh is widely used to reinforce tissues. The foreign body reaction (FBR) to the implant is dominated by innate immune cells, especially macrophages. However, considerable numbers of adaptive immune cells, namely T cells, have also been regularly observed, which appear to play a crucial role in the long-term host response. Methods This study investigated the FBR to seven human PP meshes, which were removed from the abdomen for recurrence after a median of one year. Using immunofluorescence microscopy, the FBR was examined for various innate (CD11b+ myeloid, CD68+ macrophages, CD56+ NK) and adaptive immune cells (CD3+ T, CD4+ T-helper, CD8+ cytotoxic, FoxP3+ T-regulatory, CD20+ B) as well as “conventional” immune cells (defined as cells expressing their specific immune cell marker without co-expressing CD68). Results T-helper cells (19%) and regulatory T-cells (25%) were present at comparable rates to macrophages, and clustered significantly toward the mesh fibers. For all cell types the lowest proportions of “conventional” cells (< 60%) were observed at the mesh–tissue interface, but increased considerably at about 50–100 µm, indicating reduced stimulation with rising distance to the mesh fibers. Conclusion Both innate and adaptive immune cells participate in the chronic FBR to PP meshes with T cells and macrophages being the predominant cell types, respectively. In concordance with the previous data, many cells presented a “hybrid” pattern near the mesh fibers. The complexity of the immune reaction seen within the foreign body granuloma may explain why approaches focusing on specific cell types have not been very successful in reducing the chronic FBR. Supplementary Information The online version contains supplementary material available at 10.1007/s10029-021-02396-7.
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Heise D, Mirlas Y, Helmedag M, Eickhoff R, Kroh A, Lambertz A, Klink CD, Neumann UP, Klinge U, Tolba R. Two Polyurethane Adhesives for PVDF Fixation Show Superior Biocompatibility in a Rat Model. J INVEST SURG 2020; 35:233-239. [PMID: 33535001 DOI: 10.1080/08941939.2020.1833261] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Abstract
BACKGROUND The current standard for open and laparoscopic repair of incisional hernia consist of an abdominal wall augmentation by mesh implantation. However, the ideal fixation method of the prothesis material remains under discussion, due to potential complications of conventional fixation methods such as chronic abdominal pain or intestinal obstruction. As the use of adhesive based mesh fixation is an option of growing interest, the aim of this experimental study was to investigate the strength and biocompatibility of two newly developed polyurethane-based adhesives in comparison to a cyanoacrylatic adhesive, which is currently in clinical use. METHODS Two experimental polyurethane/urea-based adhesives (Adhesive-A and Adhesive-B) were compared to a conventional cyanoacrylatic adhesive and an untreated control group. Biomechanical testing was carried out using a pull-out test in uniaxial tensile mode, while biocompatibility assessment was performed in a rat model with 40 Sprague-Dawley rats receiving a subcutaneous implanted PVDF mesh fixed by the corresponding adhesive. Histological and immunohistochemical analysis by a Tissue FAXS system examined the tissue integration of the mesh/adhesive combination and characterized the foreign body reaction. RESULTS Biomechanical testing of the mesh/adhesive combinations showed a minimal strength of 15.08 N without a significant difference between the groups. Cellular penetration into the mesh/adhesive interface was significantly improved after application of polyurethane adhesives and Adhesive-A showed a significantly lower migration of CD68 positive cells to the adhesive sites compared to cyanoacrylate after 7 days. CONCLUSION The developed polyurethane-based adhesives are a promising alternative with sufficient adhesive strength and superior short-term biocompatibility to cyanoacrylate.
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Affiliation(s)
- Daniel Heise
- Department of General, Visceral and Transplantation Surgery, RWTH Aachen University Hospital, Aachen, Germany
| | - Yelyzaveta Mirlas
- Department of General, Visceral and Transplantation Surgery, RWTH Aachen University Hospital, Aachen, Germany
| | - Marius Helmedag
- Department of General, Visceral and Transplantation Surgery, RWTH Aachen University Hospital, Aachen, Germany
| | - Roman Eickhoff
- Department of General, Visceral and Transplantation Surgery, RWTH Aachen University Hospital, Aachen, Germany
| | - Andreas Kroh
- Department of General, Visceral and Transplantation Surgery, RWTH Aachen University Hospital, Aachen, Germany
| | - Andreas Lambertz
- Department of General, Visceral and Transplantation Surgery, RWTH Aachen University Hospital, Aachen, Germany
| | - Christian Daniel Klink
- Department of General, Visceral and Transplantation Surgery, RWTH Aachen University Hospital, Aachen, Germany
| | - Ulf Peter Neumann
- Department of General, Visceral and Transplantation Surgery, RWTH Aachen University Hospital, Aachen, Germany.,Department of General Surgery, Maastricht University Medical Centre, Maastricht, The Netherlands
| | - Uwe Klinge
- Department of General, Visceral and Transplantation Surgery, RWTH Aachen University Hospital, Aachen, Germany
| | - Rene Tolba
- Institute for Laboratory Animal Science & Experimental Surgery, RWTH Aachen University Hospital, Aachen, Germany
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Eickhoff R, Heise D, Kroh A, Helmedag M, Klinge U, Neumann UP, Klink CD, Lambertz A. Improved tissue integration of a new elastic intraperitoneal stoma mesh prosthesis. J Biomed Mater Res B Appl Biomater 2020; 108:2250-2257. [PMID: 31967402 DOI: 10.1002/jbm.b.34562] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2019] [Revised: 12/03/2019] [Accepted: 01/08/2020] [Indexed: 11/06/2022]
Abstract
Parastomal herniation is a frequent complication in colorectal surgery, occurring with a prevalence of 30-80%. The aim of the study was to create a new intraperitoneal colostoma mesh prosthesis (IPST) with enhanced elastic properties made with thermoplastic polyurethane (TPU) monofilaments. We performed open terminal sigmoid colostomies reinforced with either a 10 cm by 10 cm polyvinylidene fluoride (PVDF) or a new TPU/PVDF composite mesh in a total of 10 minipigs. Colostoma was placed paramedian in the left lower abdomen and IPST meshes were fixed intraperitoneal. After 8 weeks, the animals were euthanized after laparoscopic exploration and specimen were explanted for histological investigations. Implantation of a new IPST-mesh with enhanced elastic properties was feasible in a minipig model within an observation period of 8 weeks. Immunohistochemically, Collagen I/III ratio as a marker of tissue integration was significantly higher in TPU-group versus PVDF group (9.4 ± 0.5 vs. 8.1 ± 0.5, p = 0.002) with a significantly lower inflammatory reaction measured by a smaller inner granuloma at mesh-colon interface (17.6 ± 3.3 μm vs. 23 ± 5 μm, p < 0.001). A new TPU/PVDF composite mesh with enhanced elastic properties as IPST was created. Stoma surgery and especially the evaluation of the new stoma mesh prosthesis are feasible with reproducible results in an animal model. Tissue integration expressed by Collagen I/III ratio seems to be improved in comparison to standard-elastic PVDF-IPST meshes.
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Affiliation(s)
- Roman Eickhoff
- Department of General, Visceral and Transplantation Surgery, RWTH Aachen University Hospital, Aachen, Germany
| | - Daniel Heise
- Department of General, Visceral and Transplantation Surgery, RWTH Aachen University Hospital, Aachen, Germany
| | - Andreas Kroh
- Department of General, Visceral and Transplantation Surgery, RWTH Aachen University Hospital, Aachen, Germany
| | - Marius Helmedag
- Department of General, Visceral and Transplantation Surgery, RWTH Aachen University Hospital, Aachen, Germany
| | - Uwe Klinge
- Department of General, Visceral and Transplantation Surgery, RWTH Aachen University Hospital, Aachen, Germany
| | - Ulf P Neumann
- Department of General, Visceral and Transplantation Surgery, RWTH Aachen University Hospital, Aachen, Germany
| | - Christian D Klink
- Department of General, Visceral and Transplantation Surgery, RWTH Aachen University Hospital, Aachen, Germany
| | - Andreas Lambertz
- Department of General, Visceral and Transplantation Surgery, RWTH Aachen University Hospital, Aachen, Germany
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Dreger NZ, Zander ZK, Hsu YH, Luong D, Chen P, Le N, Parsell T, Søndergaard C, Dunbar ML, Koewler NJ, Suckow MA, Becker ML. Zwitterionic amino acid-based Poly(ester urea)s suppress adhesion formation in a rat intra-abdominal cecal abrasion model. Biomaterials 2019; 221:119399. [PMID: 31421314 DOI: 10.1016/j.biomaterials.2019.119399] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2019] [Revised: 07/29/2019] [Accepted: 07/29/2019] [Indexed: 12/16/2022]
Abstract
Hernia repair outcomes have improved with more robust material options for surgeons and optimized surgical techniques. However, ventral hernia repairs remain challenging with an inherent risk of post-surgical adhesions in the peritoneal space which can occur regardless of interventional material or its surgical placement. Herein, amino acid-based poly(ester urea)s (PEUs) with varied amount of an allyl ether side chains were modified post polymerization modification with the zwitterionic sulfnate group (3-((3-((3-mercaptopropanoyl)oxy)propyl) dimethylammonio)propane-1-sulfonate) to promote anti-adhesive properties. These alloc-PEUs were processed using roll-to-roll fabrication methods to afford films that were amenable to surface functionalization via a zwitterion-thiol. Functional group availability on the surface was confirmed via fluorescence microscopy, x-ray photoelectron spectroscopy (XPS), and quartz crystal microbalance (QCM) measurements. Zwitterionic treated PEUs exhibited reduced fibrinogen adsorption in vitro when compared to unfunctionalized control polymer. A rat intrabdominal cecal abrasion adhesion model was used to assess the extent and tenacity of adhesion formation in the presence of the PEUs. The 10% alloc-PEU zwitterion functionalized material was found to reduce the extent and tenacity of adhesions when compared to adhesion controls and the unfunctionalized PEU controls.
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Affiliation(s)
- Nathan Z Dreger
- Department of Polymer Science, The University of Akron, Akron, OH, 44325, USA
| | - Zachary K Zander
- Department of Polymer Science, The University of Akron, Akron, OH, 44325, USA
| | - Yen-Hao Hsu
- Department of Polymer Science, The University of Akron, Akron, OH, 44325, USA
| | - Derek Luong
- Department of Polymer Science, The University of Akron, Akron, OH, 44325, USA
| | - Peiru Chen
- Department of Polymer Science, The University of Akron, Akron, OH, 44325, USA
| | - Nancy Le
- Department of Polymer Science, The University of Akron, Akron, OH, 44325, USA
| | | | | | - Misha L Dunbar
- College of Veterinary Medicine, The University of Minnesota, Minneapolis, MN, 55455, USA
| | - Nathan J Koewler
- College of Veterinary Medicine, The University of Minnesota, Minneapolis, MN, 55455, USA
| | - Mark A Suckow
- Department of Biomedical Engineering, The University of Kentucky, Lexington, KY, 40506, USA
| | - Matthew L Becker
- Department of Polymer Science, The University of Akron, Akron, OH, 44325, USA; Biomedical Engineering, The University of Akron, Akron, OH, 44325, USA; Department of Chemistry, Duke University, Durham, NC, 27708, USA; Department of Mechanical Engineering and Material Science, Duke University, Durham, NC, 27708, USA; Orthopaedic Surgery, Duke University, Durham, NC, 27708, USA.
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11
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Xue Y, Tang Z, Qin M, Yu M, Li Z. Improved toughness of poly(ether- block-amide) via melting blending with thermoplastic polyurethane for biomedical applications. J Appl Polym Sci 2019. [DOI: 10.1002/app.47397] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Yunyun Xue
- School of Materials Science and Engineering; University of Shanghai for Science and Technology; Shanghai 200433 China
| | - Zhihong Tang
- School of Materials Science and Engineering; University of Shanghai for Science and Technology; Shanghai 200433 China
| | - Minglin Qin
- Shanghai MicroPort Medical (Group) Co., Ltd.; Shanghai 201203 China
| | - Muhuo Yu
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering; Donghua University; Shanghai 201620 China
| | - Zhaomin Li
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering; Donghua University; Shanghai 201620 China
- Shanghai MicroPort Medical (Group) Co., Ltd.; Shanghai 201203 China
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12
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Heise D, Eickhoff R, Kroh A, Binnebösel M, Klinge U, Klink CD, Neumann UP, Lambertz A. Elastic TPU Mesh as Abdominal Wall Inlay Significantly Reduces Defect Size in a Minipig Model. J INVEST SURG 2018; 32:501-506. [PMID: 29469618 DOI: 10.1080/08941939.2018.1436207] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
Background: The open abdomen with mesh implantation, followed by early reoperation with fascial closure, is a modern surgical approach in difficult clinical situations such as severe abdominal sepsis. As early fascial closure is not possible in many cases, mesh-mediated fascial traction is helpful for conditioning of a minimized ventral hernia after open abdomen. The aim of this study was to evaluate the clinical utilization of an innovative elastic thermoplastic polyurethane mesh (TPU) as an abdominal wall inlay in a minipig model. Methods: Ten minipigs were divided in two groups, either receiving an elastic TPU mesh or a nonelastic polyvinylidene fluoride (PVDF) mesh in inlay position of the abdominal wall. After 8 weeks, mesh expansion and abdominal wall defect size were measured. Finally, pigs were euthanized and abdominal walls were explanted for histological and immunohistochemical assessment. Results: Eight weeks after abdominal wall replacement, transversal diameter of the fascial defect in the TPU group was significantly smaller than in the PVDF group (4.5 cm vs. 7.4 cm; p = 0.047). Immunhistochemical analysis showed increased Ki67 positive cells (p = 0.003) and a higher number of apoptotic cells (p = 0.047) after abdominal wall replacement with a TPU mesh. Collagen type I/III ratio was increased in the PVDF group (p = 0.011). Conclusion: Implantation of an elastic TPU mesh as abdominal wall inlay is a promising approach to reduce the size of the ventral hernia after open abdomen by mesh-mediated traction. However, this effect was associated with a slightly increased foreign body reaction in comparison to the nonelastic PVDF.
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Affiliation(s)
- D Heise
- Department of General, Visceral and Transplantation Surgery, RWTH Aachen University Hospital, Aachen, Germany
| | - R Eickhoff
- Department of General, Visceral and Transplantation Surgery, RWTH Aachen University Hospital, Aachen, Germany
| | - A Kroh
- Department of General, Visceral and Transplantation Surgery, RWTH Aachen University Hospital, Aachen, Germany
| | - M Binnebösel
- Department of General, Visceral and Transplantation Surgery, RWTH Aachen University Hospital, Aachen, Germany
| | - U Klinge
- Department of General, Visceral and Transplantation Surgery, RWTH Aachen University Hospital, Aachen, Germany
| | - C D Klink
- Department of General, Visceral and Transplantation Surgery, RWTH Aachen University Hospital, Aachen, Germany
| | - U P Neumann
- Department of General, Visceral and Transplantation Surgery, RWTH Aachen University Hospital, Aachen, Germany.,Department of General Surgery, Maastricht University Medical Centre, Maastricht, The Netherlands
| | - A Lambertz
- Department of General, Visceral and Transplantation Surgery, RWTH Aachen University Hospital, Aachen, Germany
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13
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Bellón JM, Rodríguez M, Pérez-Köhler B, Pérez-López P, Pascual G. * The New Zealand White Rabbit as a Model for Preclinical Studies Addressing Tissue Repair at the Level of the Abdominal Wall. Tissue Eng Part C Methods 2017; 23:863-880. [PMID: 28756748 DOI: 10.1089/ten.tec.2017.0167] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023] Open
Abstract
In this report, we review the use of the New Zealand White rabbit as the experimental animal for several models of abdominal wall repair. For the repair of an abdominal wall defect, such as a hernia in clinical practice, multiple types of prosthetic material exist. Before their marketing, each of these biomaterials needs to be tested in a preclinical setting to confirm its biocompatibility and appropriate behavior at the different tissue interfaces. For preclinical trials, we have always used the New Zealand White rabbit as the model owing to its ease of handling and suitable size. This size allows for laparoscopic studies designed to follow the behavior in real time of a biomaterial implanted at the peritoneal interface, a delicate interface that often gives rise to complications in human practice. The size of the rabbit also offers a sufficiently large number of implant samples to be harvested for a complete battery of tests at several time points postimplant. In this review, we first describe the models established and then provide the results obtained so far using these models to test the different types of biomaterial. We end our review with a discussion of the clinical implications of these results.
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Affiliation(s)
- Juan M Bellón
- 1 Department of Surgery, Medical, and Social Sciences, University of Alcalá , Alcalá de Henares, Madrid, Spain
| | - Marta Rodríguez
- 1 Department of Surgery, Medical, and Social Sciences, University of Alcalá , Alcalá de Henares, Madrid, Spain
| | - Bárbara Pérez-Köhler
- 1 Department of Surgery, Medical, and Social Sciences, University of Alcalá , Alcalá de Henares, Madrid, Spain
| | - Paloma Pérez-López
- 1 Department of Surgery, Medical, and Social Sciences, University of Alcalá , Alcalá de Henares, Madrid, Spain
| | - Gemma Pascual
- 2 Department of Medicine and Medical Specialities, Faculty of Medicine and Health Sciences, Networking Research Center on Bioengineering, Biomaterials, and Nanomedicine (CIBER-BBN), University of Alcalá , Alcalá de Henares, Madrid, Spain
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14
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Modelling of compressible and orthotropic surgical mesh implants based on optical deformation measurement. J Mech Behav Biomed Mater 2017; 74:400-410. [DOI: 10.1016/j.jmbbm.2017.06.012] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2017] [Revised: 06/06/2017] [Accepted: 06/09/2017] [Indexed: 12/29/2022]
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15
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Lambertz A, van den Hil LCL, Ciritsis A, Eickhoff R, Kraemer NA, Bouvy ND, Müllen A, Klinge U, Neumann UP, Klink CD. MRI Evaluation of an Elastic TPU Mesh under Pneumoperitoneum in IPOM Position in a Porcine Model. J INVEST SURG 2017; 31:185-191. [PMID: 28594257 DOI: 10.1080/08941939.2017.1301599] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
BACKGROUND The frequency of laparoscopic approaches increased in hernia surgery over the past years. After mesh placement in IPOM position, the real extent of the meshes configurational changes after termination of pneumoperitoneum is still largely unknown. To prevent a later mesh folding it might be useful to place the mesh while it is kept under tension. Conventionally used meshes may lose their Effective Porosity under these conditions due to poor elastic properties. The aim of this study was to evaluate a newly developed elastic thermoplastic polyurethane (TPU) containing mesh that retains its Effective Porosity under mechanical strain in IPOM position in a porcine model. It was visualized under pneumoperitoneum using MRI in comparison to polyvinylidenefluoride (PVDF) meshes with similar structure. METHODS In each of ten minipigs, a mesh (TPU containing or native PVDF, 10 × 20 cm) was randomly placed in IPOM position at the center of the abdominal wall. After 8 weeks, six pigs underwent MRI evaluation with and without pneumoperitoneum to assess the visibility and elasticity of the mesh. Finally, pigs were euthanized and abdominal walls were explanted for histological and immunohistochemical assessment. The degree of adhesion formation was documented. RESULTS Laparoscopic implantation of elastic TPU meshes in IPOM position was feasible and safe in a minipig model. Mesh position could be precisely visualized and assessed with and without pneumoperitoneum using MRI after 8 weeks. Elastic TPU meshes showed a significantly higher surface increase under pneumoperitoneum in comparison to PVDF. Immunohistochemically, the amount of CD45-positive cells was significantly lower and the Collagen I/III ratio was significantly higher in TPU meshes after 8 weeks. There were no differences regarding adhesion formation between study groups. CONCLUSIONS The TPU mesh preserves its elastic properties in IPOM position in a porcine model after 8 weeks. Immunohistochemistry indicates superior biocompatibility regarding CD45-positive cells and Collagen I/III ratio in comparison to PVDF meshes with a similar structure.
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Affiliation(s)
- A Lambertz
- a Department of General, Visceral and Transplantation Surgery , RWTH Aachen University Hospital , Aachen , Germany
| | - L C L van den Hil
- a Department of General, Visceral and Transplantation Surgery , RWTH Aachen University Hospital , Aachen , Germany.,b Department of General Surgery , Maastricht University Medical Centre , Maastricht , The Netherlands
| | - A Ciritsis
- c Department of Diagnostic and Interventional Radiology , RWTH Aachen University Hospital , Aachen , Germany
| | - R Eickhoff
- a Department of General, Visceral and Transplantation Surgery , RWTH Aachen University Hospital , Aachen , Germany
| | - N A Kraemer
- c Department of Diagnostic and Interventional Radiology , RWTH Aachen University Hospital , Aachen , Germany
| | - N D Bouvy
- b Department of General Surgery , Maastricht University Medical Centre , Maastricht , The Netherlands
| | - A Müllen
- d FEG Textiltechnik mbH , Aachen , Germany
| | - U Klinge
- a Department of General, Visceral and Transplantation Surgery , RWTH Aachen University Hospital , Aachen , Germany
| | - U P Neumann
- a Department of General, Visceral and Transplantation Surgery , RWTH Aachen University Hospital , Aachen , Germany
| | - C D Klink
- a Department of General, Visceral and Transplantation Surgery , RWTH Aachen University Hospital , Aachen , Germany
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16
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Mortensen AR, Grossmann I, Rosenkilde M, Wara P, Laurberg S, Christensen P. Double-blind randomized controlled trial of collagen mesh for the prevention of abdominal incisional hernia in patients having a vertical rectus abdominis myocutaneus flap during surgery for advanced pelvic malignancy. Colorectal Dis 2017; 19:491-500. [PMID: 27805791 DOI: 10.1111/codi.13552] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/30/2016] [Accepted: 07/18/2016] [Indexed: 02/08/2023]
Abstract
AIM The study investigated the effect of collagen mesh-assisted closure at the donor site in preventing the formation of incisional hernia following construction of a vertical rectus abdominis myocutaneus (VRAM) flap as part of pelvic surgery for recurrent colorectal cancer. METHOD The study was a double-blinded randomized controlled superiority trial that was designed and performed according to the Consolidated Standards of Reporting Trials (CONSORT) Statement. Eligible patients undergoing surgery that included a VRAM flap for advanced colorectal pelvic malignancy were prospectively randomized to conventional abdominal wound closure or collagen mesh-assisted closure. The primary end-point was incisional herniation at 1 year confirmed by CT. Secondary end-points were CT-verified incisional herniation at 3 and 36 months, clinically recognizable incisional herniation, donor-site and reconstructive-site complications, surgical mortality, postoperative morbidity, postoperative recovery and survival. RESULTS In total, 58 (29 conventional closure; 29 mesh-assisted closure) patients were included. At 1 year, incisional herniation on the CT scan was found in 12 (50%) of 24 patients in the conventional closure group, and in 8 (33%) of 24 in the mesh-assisted closure group (P = 0.38). No significant difference between the groups was found in surgical mortality, early or late complications or survival. Donor-site morbidity was comparable between the two groups. CONCLUSION No preventative effect of collagen mesh-assisted closure was observed following VRAM flap reconstruction.
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Affiliation(s)
- A R Mortensen
- Department of Surgery, Aarhus University Hospital, Aarhus, Denmark
| | - I Grossmann
- Department of Surgery, Aarhus University Hospital, Aarhus, Denmark
| | - M Rosenkilde
- Department of Radiology, Aarhus University Hospital, Aarhus, Denmark
| | - P Wara
- Department of Surgery, Aarhus University Hospital, Aarhus, Denmark
| | - S Laurberg
- Department of Surgery, Aarhus University Hospital, Aarhus, Denmark
| | - P Christensen
- Department of Surgery, Aarhus University Hospital, Aarhus, Denmark
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17
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Rocca A, Aprea G, Surfaro G, Amato M, Giuliani A, Paccone M, Salzano A, Russo A, Tafuri D, Amato B. Prevention and treatment of peritoneal adhesions in patients affected by vascular diseases following surgery: a review of the literature. Open Med (Wars) 2016; 11:106-114. [PMID: 28352777 PMCID: PMC5329808 DOI: 10.1515/med-2016-0021] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2016] [Accepted: 03/07/2015] [Indexed: 12/26/2022] Open
Abstract
Intra-abdominal adhesions are the most frequently occurring postoperative complication following abdomino-pelvic surgery. Abdominal and pelvic surgery can lead to peritoneal adhesion formation causing infertility, chronic pelvic pain, and intestinal obstruction. Laparoscopy today is considered the gold standard of care in the treatment of several abdominal pathologies as well as in a wide range of vascular diseases. Laparoscopy has several advantages in comparison to open surgery. These include rapid recovery times, shorter hospitalisation, reduced postoperative pain, as well as cosmetic benefits. The technological improvements in this particular surgical field along with the development of modern techniques and the acquisition of specific laparoscopic skills have allowed for its wider utilization in operations with fully intracorporeal anastomoses. Postoperative adhesions are caused by aberrant peritoneal healing and are the leading cause of postoperative bowel obstruction. The use of anti-adherence barriers is currently being advocated for their prevention. The outcome of the investigation showed adhesion formation inhibition without direct detrimental effects on anastomotic healing. Poor anasto-motic healing can provoke adhesions even in the presence of anti-adhesion barriers. This review gives a short overview on the current evidence on the pathophysiology and prevention of peritoneal adhesions.
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Affiliation(s)
- Aldo Rocca
- Department of Clinical Medicine and Surgery, University of Naples “Federico II”, Naples, Italy . Via Sergio Pansini, 80131 Naples, Italy
| | - Giovanni Aprea
- Department of Clinical Medicine and Surgery, University of Naples Federico II, Italy
| | | | - Maurizio Amato
- Department of Clinical Medicine and Surgery, University of Naples Federico II, Italy
| | - Antonio Giuliani
- Unit of Hepatobiliary Surgery and Liver Transplant Center, Department of Gastroenterology and Transplantation, ”A. Cardarelli” Hospital, Naples, Italy
| | - Marianna Paccone
- Department of Medicine and Health Sciences “Vincenzo Tiberio”, University of Molise, Campobasso, Italy
| | - Andrea Salzano
- Department of Translational Medical Sciences, University of Naples “Federico II”, Naples, Italy
| | - Anna Russo
- Santa Maria delle Grazie Hospital, Pathology Unit, Pozzuoli, Naples, Italy
| | - Domenico Tafuri
- Department of Sport Sciences and Wellness, University of Naples “Parthenope”, Naples, Italy
| | - Bruno Amato
- Department of Clinical Medicine and Surgery, University of Naples Federico II, Italy
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18
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Calvo B, Pascual G, Peña E, Pérez-Khöler B, Rodríguez M, Bellón J. Biomechanical and morphological study of a new elastic mesh (Ciberlastic) to repair abdominal wall defects. J Mech Behav Biomed Mater 2016; 59:366-378. [DOI: 10.1016/j.jmbbm.2016.02.010] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2015] [Revised: 01/28/2016] [Accepted: 02/04/2016] [Indexed: 11/30/2022]
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