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Aim: Implant fixation, mesh shrinkage and poor quality of tissue ingrowth are unresolved issues in modern hernia repair. Many complications reported in the literature such as bleeding, nerve entrapment, hematoma, pain, discomfort, and testicular complications, are considered to be a direct results of implant fixation. This article describes the outcomes of a procedure carried out using a handcrafted implant that addresses the issues consequent to point fixation., Methods: This was a retrospective study on the short, medium and long-term results of placing a-modified, fixation free three-dimensional polypropylene implant in 61 patients who underwent inguinal hernia repair using a novel delivery technique. The follow up length was at least 36 months postop., Results: Only minor adverse events and a low complication rate of the procedure were observed in this patient sample. There were no long- term complications. Postoperative pain was very low in both the short and long term. No chronic pain was reported. No recurrences occurred., Conclusion: The results of this retrospective study on a new method of inguinal hernia repair using a three dimensional handcrafted multilamellar implant delivered with a modified placement technique are promising. The short-, medium- and long-term complications were notably low. No recurrences were noticed but, more importantly, no chronic pain and extremely low discomfort rates were observed even in the long term.

Background: The study is focused on recognizing the histological changes of the structures close to and around the hernia opening in patients having direct inguinal hernia., Methods: In 15 patients with primary bilateral direct inguinal hernia who underwent a Stoppa open posterior inguinal hernia repair, tissue specimens from the abdominal wall surrounding a direct hernia border were excised for histological examination. These findings in patients with direct inguinal hernia were compared with tissue specimens excised from the fossa inguinalis media of cadavers without hernia., Results: Significant degenerative modifications such as fibrohyaline degeneration and fatty substitution of the muscle fibers were seen in the biopsy samples. Inflammatory infiltration with lympho-histiocitary elements, artery sub-occlusion and vascular congestion were also constantly identified. Noteworthy injuries of the nervous structures such as edema, degenerative fibrosis and atrophy were also detected. No comparable tissue damage was witnessed in the control samples., Conclusion: Presence of inflammatory infiltration, vascular damage and regressive nerve lesions, as well as fibrohyaline degeneration and fatty dystrophy of the muscle fibers are the features seen within the examined structures surrounding the direct hernia opening. These findings could represent a reason for a structural and functional weakening of the inguinal region. Consequently, the described results lead the authors to depict these changes as a plausible cause of direct inguinal hernia protrusion.

Background: There are few articles in the literature reporting the histological changes of groin structures affected by inguinal hernia. A deeper knowledge of this matter could represent an important step forward in the identification of the causes of hernia protrusion. This study aimed to recognise the pathological modifications of muscular structures in autopsy specimens excised from tissues surrounding the hernia orifice., Methods: Inguinal hernia was identified in 30 autopsied cadavers, which presented different varieties of hernia, including indirect, direct and mixed. Tissue specimens were resected for histological study from structures of the inguinal area surrounding the hernia opening, following a standardised procedure. The histological examination was focussed on the detection of structural changes in the muscle tissues. The results were compared with biopsy specimens resected from corresponding sites of the inguinal region in a control group of 15 fresh cadavers without hernia., Results: Significant modification of the muscular arrangement of the inguinal area was recognized. Pathological alterations such as atrophy, hyaline and fibrotic degeneration, as well as fatty dystrophy of the myocytes were detected. These findings were observed consistently in the context of multistructural damage also involving vessels and nerves. In cadavers with hernia these alterations were always present independent of hernia type. No comparable damage was found in control cadavers without hernia., Conclusions: The high degree of degenerative changes in the muscle fibres in the inguinal area involved in hernia protrusion described in this report seems to be consistent with chronic compressive damage. These alterations could embody one important factor among the multifactorial sources of hernia genesis. Conjectures concerning its impact on the physiology and biodynamics of the inguinal region are made. The relationship between the depicted degenerative injuries and the genesis of inguinal hernia is also a focus of discussion in this article.

Introduction: Issues in ventral hernia repair are represented by the need for mesh fixation and how to assure a sufficient mesh overlap of the defect. Aiming to resolve these problems, this study describes a modified technique for ventral and incisional hernia repair based upon a newly developed mesh with a special design. This new type of implant allows broader coverage of the abdominal wall and results in tension- and fixation-free repair., Materials and Methods: A unique geometrically shaped mesh consisting of a large central body and radiating arms was used to repair ventral or incisional hernia. The mesh was intended not to be point-fixated. The friction of the straps passing through the tissues was hypothesized to be adequate to maintain the mesh firmly fastened in the abdominal wall, ensuring a wide coverage far from the hernia border. The newly designed mesh was placed in the preperitoneal sublay in 22 patients with ventral or incisional hernia. All straps were passed laterally through the transverse and oblique muscles. In all patients, a defect overlap of at least 8-12 cm was achieved., Results: In a midterm follow-up of 18-24 (mean 22) months, three seromas and one infection occurred, which were successfully managed without mesh removal. No hematoma, chronic pain, or recurrence has been reported to date., Conclusions: The described arm system of the implant allowed for a much smaller incision and eliminated the complicated maneuvers associated with suturing the mesh. The fixation arms seemed to have ensured the mesh stayed orientated in all patients. A very wide lateral mesh placement was accomplished, assuring sufficient defect overlap when shrinkage occurs.

Background: The histological study of the herniated inguinal area is rare in the literature. This report is focused on the detection of structural changes of the nerves within tissues bordering the inguinal hernia of cadavers. Their physiopathological consequences are hypothesized., Materials and Methods: Primary inguinal hernia was diagnosed in 30 fresh cadavers. Tissue specimens from the inguinal region close to and around the hernia opening were excised for histological examination. A control of the data was achieved through tissue samples excised from equivalent sites of the inguinal region in 15 cadavers without hernia., Results: The detected nerves in the inguinal area demonstrated pathological changes such as fibrotic degeneration, atrophy, and fatty dystrophy of the axons. The thickening of the perineural sheath was constantly seen. These findings were consistently present, independent of the hernia type., Conclusions: The detected nerve alterations lead us to imagine a worsening, or even the cessation, of the nervous impulse to the muscles, leading to atrophy and weakening of the abdominal wall. This could represent one of the multifactorial causes of hernia genesis.

Introduction: Aiming to achieve a simplified ventral hernia repair, a proprietary oval-shaped mesh was experimentally tested in a porcine model. The mesh is structured with a large central body and radiating straps. The friction of the straps passing through the tissues are hypothesized to be adequate to maintain the position of the mesh during tissue ingrowth, avoiding classic point fixation while ensuring a wide coverage of the abdomen., Methods: The mesh, having six radial straps, was placed using a sublay preperitoneal technique in four pigs. All straps were passed laterally through the abdominal wall and exteriorized from the skin. The straps were trimmed at the level of the skin, allowing the stumps to recoil into the subcutaneous space. The animals were euthanized at 1 and 4 months to determine the integration of the straps., Results: Macroscopically, all 24 straps were firmly incorporated within the abdominal wall. The tension-free placement of the mesh by using the straps was effective. The friction of the straps passing through the tissues was adequate to keep the mesh well orientated. No dislocation of the implants was observed. The strap system also allowed a broader coverage of the abdominal wall, far beyond the wound opening., Conclusions: The described arm system of the aforementioned implant seems to be effective in eliminating point fixation of the mesh. The fixation arms seemed to have ensured that the mesh stayed orientated in all of the animals. A very wide lateral mesh placement was accomplished, assuring sufficient defect overlap when shrinkage occurs.