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Objective:The microstructure, tensile strength, and bursting strength of different brands of hernia meshes were compared and analyzed through experiments to evaluate the performance of different meshes.Methods:The balance and microscope were used to test the weight and microstructure of 15 common meshes and the tensile testing machine and burst testing machine were used to test the tensile and bursting properties of the mesh, and the mechanical properties of the mesh were analyzed.Results:The woven structures of the mesh are diamond, polygon and circle. The average weight of inguinal meshes is 0.08 mg/mm 2, and the average weight of abdominal wall hernia meshes is 0.18 mg/mm 2. The wire diameters of G3 - G6 meshes are larger, while the mesh opening ratio of G12 is lower. In the tensile performance test, it is known that G15 has the highest tensile strength, G12 and G14 have lower tensile strengths in lightweight meshes, and G1, G2, and G7 have lower tensile strengths in lightweight meshes. In the burst performance test, it is known that G3, G9, and G15 have the highest burst strength, while G12, G13, and G14 have the lowest burst strength in lightweight meshes. G1, G2, and G4 have the lowest burst strength in lightweight meshes. Conclusions:The mesh with a polygonal mesh and a large mesh opening ratio has better mechanical properties. The results of this study provide experimental evidence for optimizing hernia meshes, which is expected to provide better support for related research and applications.
ABSTRACT
Introducción: El objetivo de este estudio fue comparar la tasa de hernia incisional (HI) tras la extracción de piezas operatorias por mini-laparatomia media periumbilical (MM) versus mini-laparotomía transversa suprapúbica (MTS) en pacientes sometidos a cirugía laparoscópica por cáncer colorrectal (CLCC), y evaluar los factores asociados a su ocurrencia. Material y Método: Estudio de cohorte no concurrente. Se incluyen todos los pacientes consecutivos sometidos a CLCC en nuestro centro entre septiembre 2006 y diciembre 2017, cuya pieza operatoria fuese extraída por una MM o MTS y que contaran con un control tomográfico en el seguimiento. El diagnóstico de HI se realizó mediante tomografía computada, evaluada por dos radiólogos de forma independiente. Se agruparon los pacientes en MM y MTS, y se evaluaron las tasas de HI según sitio de extracción. Además, se realizó una regresión logística para identificar factores asociados a HI. Resultados: Se identificaron 1090 pacientes que tuvieron resecciones colorrectales lapa-roscópicas durante el período estudiado. De estos, 254 cumplieron con los criterios de inclusión. La edad media de la serie fue de 63 años (53,5% son hombres) con un IMC de 26,4 kg/m2. El sitio de extracción fue una MTS en un 53,1% y una MM en un 46,9%. Se identificó un total de 41 (34,5%) HI en el grupo de MM versus 17 (12,6%) en MTS (p = 0,001) en la TC de seguimiento realizado en una mediana de 18 meses (RIC 12-32) postoperatorios. En la regresión logística, el sitio de extracción (OR = 3,33, IC 95% 1,72-7,14, p < 0,001) y la presencia de patología bronquial obstructiva se asociaron de manera independiente con HI (OR = 3,45, IC 95% 1,11-11,11, p = 0,03). Conclusión: La MTS se asocia a una menor tasa de HI que la MM en pacientes sometidos a CLCC. Esto se debe tener en consideración al momento de elegir el sitio de extracción de pieza operatoria en CLCC.
Aim: To compare the rate of incisional hernia (IH) according to the extraction site in patients undergoing laparoscopic colorectal cancer surgery (LCCS), and to evalúate the risk factors associated with its occurrence. Material and Method: Cohort study including all consecutive patients undergoing LCCS in our center between September 2006 and December 2017, where the specimen was extracted through a median mini-laparotomy (MM) or transverse suprapubic mini-laparotomy (TSM) and have a tomographic control during follow-up. The diagnosis of IH was made by computed tomography evaluated by two radiologists, independently. The rate of IH was calculated for both groups and a regression analysis were performed to identify factors associated with IH. Results: Some 1090 patients undergoing laparoscopic colorectal resections were identified during the study period; of these, 254 met the inclusion criteria. The mean age of the series was 63 years (53.5% are men) with a BMI of 26.4 kg/m2. The extraction site was a TSM in 53.1% and a MM in 46.9%. A total of 41 (34.5%) IH were identified in the MM group versus 17 (12.6%) in TSM (p = 0.001) in the follow-up CT performed at a median of18 months (IQR 12-32) postoperative. In logistic regression, the extraction site (OR = 3.33, 95% CI 1.72-7.14, p < 0.001) and the presence of obstructive bronchial pathology were independently associated with IH (OR = 3, 45, 95% CI 1.11-11.11, p = 0.03). Conclusión: A TSM is associated with a lower rate of IH compared to a MM as extraction site in patients undergoing LCCS. This must be taken into account when choosing the extraction site in patients having LCCS.
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Background: Chronic groin pain (inguinodynia) following inguinal hernia repair is a significant, though under-reported problem. Mild pain lasting for a few days is common following mesh inguinal hernia repair. However, moderate to severe pain persisting more than 3 months after inguinal herniorrhaphy should be considered as pathological. The main aim of this study was to assess the incidence of inguinodynia in inguinal hernia repair patients at a tertiary centre.Methods: This non-randomized retrospective study was undertaken in the department of general surgery, SMIMER Hospital, Surat, Gujarat, India from August 2016 to July 2019. Total 940 patients were operated for inguinal hernia repair during this period. Out of these 940 patients, only 460 patients could be traced for clinical evaluation as Surat is an industrial city with very high percentage of migrant population and so only, they were included in the study.Results: In this study, total 460 patients were included, in which 310 patients were operated for open inguinal hernia repair and 150 patients were operated for laparoscopic hernia repair. Total 102 (22.17%) patients has developed inguinodynia out of 460 patients evaluated in this series. Incidence of inguinodynia is more in open inguinal hernia repair than laparoscopic inguinal hernia repair i.e., 24.83% versus 16.67%. Incidence of testicular complication in inguinodynia patients is more in open inguinal hernia repair and non in laparoscopic repair.Conclusions: Authors conclude that overall incidence of inguinodynia is 22.17% and incidence of inguinodynia is higher in open hernia repair in comparison to laparoscopic hernia repair (24.83% versus 16.67%). The incidence of mild inguinodynia is approximately eight times more common than severe inguinodynia.
ABSTRACT
Background: “Paraumbilical hernia” occurs through Linea Alba either above or below umbilicus. The current trend is to use a mesh forthe repair irrespective of the size. The conventional suture method of Mayo’s is also being practiced in various centers. An attempt ismade in this study to compare both the methods especially in relation to their post-operative complications in the long-term follow-up.Aim of the Study: The aim of the study to study and compare Mayo’s method and use of mesh technique in the surgicalmanagement of repair of paraumbilical hernias in relation to their post-operative complications.Materials and Methods: A cross-sectional prospective clinical study was conducted in the Department of General Surgeryof Malabar Medical College Hospital, Modakkallur. Atholi, Kozhikode, Kerala, wherein 58 patients undergoing surgery forparaumbilical hernia were included in the study. The patients were assigned to these groups using random numbers from www.randomizer.org. The patients belonging to Group A were subjected to Mayo’s operation and Group B were subjected to Meshtechnique. All the patients were asked thorough history taking followed by investigations of surgical profile before undertakingthe surgery. All the patients were followed up from day 1 postoperatively for 2 years.Observations and Results: A total of 58 patients with paraumbilical hernia were divided into 2 equal groups comprising of29 each. The mean age in Group A was 43.65 ± 4.10 years and in Group B was 44.60 ± 3.20 years. There were 18 femalesand 11 males in Group A and 17 females and 12 males in Group B. The patients belonging to the age group of 33–62 yearswere 21/29 (72.41%) in group A and 23/29 (79.31%) in Group B. There was no statistical significance in the incidence amongthe two groups as P = 0.153 (P taken significantly at <0.05). The male to female ratio in Group A was 1:1.63 and 1:1.41 inGroup B. Pain was complained in the post-operative period in 19/29 (65.51%) patients in Group A and 16/29 (55.17%) patientsin Group B. Hematoma was observed in 5/29 (17.24%) patients in Group A and 7/29 (24.13%) patients in Group B. Seromawas observed in 4/29 (13.79%) patients in Group A and 3/29 (10.34%) patients in Group B.Conclusions: In a follow-up of 2 months to years, among the procedures used classical Mayo’s repair had 4/29 recurrencesand 1/29 were noted in patients underwent mesh repair. Even though Mayo’s repair for paraumbilical has been the procedureof choice in many centers, but the tension-free mesh repair has an advantage of having no recurrences and can be used in thepresence of bigger defect and weaker abdominal muscle tone, thus showing a superior and favorable procedure than Mayo’s repair.
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Background: Incisional hernias are a potential complication of abdominal surgery. Tensión free surgical techniques using prosthetic materials are the ideal treatment. Aim: To report the preliminary experience in incisional hernia repair using the Prolene Hernia System® from Ethicon Endo-Surgery (Bracknell, UK). Material and Methods: Report of four operated males and one female aged 48 +/- 7 years. Results: Surgical time ranged from 30 to 55 minutes. Postoperative hospital stay was 24 hours. No patient had postoperative complications. No hernia relapse has been detected in the outpatient follow up. Conclusions: These preliminary results show a successful incisional hernia repair using the Prolene Hernia System® from Ethicon Endo-Surgery.
Introducción: La hernia incisional es una complicación potencial de cualquier cirugía laparotómica o laparoscópica. El tratamiento de las hernias incisionales es quirúrgico. En la actualidad, las técnicas libres de tensión con la utilización de materiales protésicos constituyen la elección en el tratamiento de la hernia incisional. Objetivo: Presentar un reporte preliminar de los resultados obtenidos en el tratamiento de hernias incisionales con Prolene Hernia System® de Ethicon Endo-Surgery (Bracknell, UK). Materiales y Método: Reporte de casos. Se describe la técnica quirúrgica utilizada y los criterios de selección para pacientes con hernia incisional que han sido tratados quirúrgicamente utilizando como material protésico Prolene Hernia System® a partir de Octubre de 2006. Los pacientes han tenido un seguimiento clínico periódico durante 2 años. Se reportan los resultados en términos de morbilidad y recidiva. Resultados: El reporte consta de 5 pacientes, 4 mujeres y 1 hombre. La edad promedio es de 48 + 6,39 años. El tiempo operatorio promedio de 45 minutos con una estadía hospitalaria de 24 horas. No se presentaron complicaciones en el período postoperatorio. Durante el seguimiento no se ha presentado recidiva hemiaria. Conclusiones: Prolene Hernia System® es una prótesis que proporciona un doble soporte de la pared abdominal, y teóricamente podría mejorar los resultados de la reparación hemiaria sin tensión. Estos resultados deben ser evaluados mediante estudios con un diseño apropiado a terapia y con seguimiento a largo plazo.