Mechanical response of the herniated human abdomen to the placement of different prostheses.
This paper describes a method designed to model the repaired herniated human abdomen just after surgery and examine its static mechanical response to the maximum intra-abdominal pressure provoked by a physiological movement (standing cough). The model is based on the real geometry of the human abdomen bearing a large incisional hernia with several anatomical structures differentiated by MRI. To analyze the outcome of hernia repair, the surgical procedure was simulated by modeling a prosthesis placed over the hernia. Three surgical meshes with different mechanical properties were considered: an isotropic heavy-weight mesh (Surgipro®), a slightly anisotropic light-weight mesh (Optilene®), and a highly anisotropic medium-weight mesh (Infinit®). Our findings confirm that anisotropic implants need to be positioned such that the most compliant axis of the mesh coincides with the craneo-caudal direction of the body.
Belén
B
Hernández-Gascón
Estefanía
E
Peña
Jorge
J
Grasa
Gemma
G
Pascual
Juan M
JM
Bellón
Begoña
B
Calvo
D016880:Anisotropy; D001696:Biomechanical Phenomena; D020342:Finite Element Analysis; D046449:Hernia, Abdominal / Q000601:surgery; D006801:Humans; D055595:Mechanical Phenomena; D019736:Prostheses and Implants; D013314:Stress, Mechanical