Explore chapters and articles related to this topic
Design of Abdominal Wall Hernioplasty Meshes Guided by Mechanobiology and the Wound Healing Response
Published in Jiro Nagatomi, Eno Essien Ebong, Mechanobiology Handbook, 2018
Shawn J. Peniston, Karen J.L. Burg, Shalaby W. Shalaby
Evolution has clearly left human beings with a section of the abdominal wall that is weaker in comparison to the rest of the abdominal wall: the majority of hernias occur in the myopectineal orifice of the inguinal region. The thin and weak transversalis fascia of the groin coupled with the lack of fascial sheath below the arcuate line together form the argument for an intrinsic defect in the human abdominal wall [50]. Many surgeons believe the transversalis fascia does not even resemble fascia or any tendinous-like structure; the transversalis fascia is a thin, fibro-membranous peritoneum with markedly reduced strength as compared with typical fascia [50]. The myopectineal orifice is sealed by the transversalis fascia; thus, all groin hernias are the result of the displacement of this fascia by a peritoneal sac.
The effects of the muscular contraction on the abdominal biomechanics: a numerical investigation
Published in Computer Methods in Biomechanics and Biomedical Engineering, 2019
Piero G. Pavan, Silvia Todros, Paola Pachera, Silvia Pianigiani, Arturo N. Natali
Moreover, at the same value of IAP (100 mmHg) the membrane force is computed on transversalis fascia in abdominal regions that are usually involved in hernia occurrence (Figure 6). In the region where umbilical hernia commonly takes place, in the transversal direction a value of 3.1 N/cm is found in passive condition, while a value of 2.8 N/cm is evaluated when muscles are activated. The same analysis in the craniocaudal direction highlights a membrane force of 0.16 N/cm and 0.07 N/cm in passive and active condition, respectively. Between umbilicus and sternum, where epigastric hernia usually occurs, the membrane force in transversal direction on the central region of transversalis fascia is 0.88 N/cm in passive condition and 0.68 N/cm in the case of muscular contraction. Considering the craniocaudal direction, the membrane force is 0.13 N/cm and 0.01 N/cm in passive and active condition, correspondingly.