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- W2108340448 abstract "Objective To define the impact of prolapse mesh on the biomechanical properties of the vagina by comparing the prototype Gynemesh PS (Ethicon) to two new‐generation lower stiffness meshes, S mart M esh (Coloplast) and U ltra P ro ( E thicon). Design A study employing a nonhuman primate model. Setting University of Pittsburgh, PA , USA . Population Forty‐five parous rhesus macaques. Methods Meshes were implanted via sacrocolpopexy after hysterectomy and compared with sham. Because its stiffness is highly directional, U ltraPro was implanted in two directions: U ltra P ro P erpendicular (less stiff) and U ltra P ro Parallel (more stiff), with the indicated direction referring to the position of the blue orientation lines relative to the longitudinal axis of the vagina. The mesh–vaginal complex ( MVC ) was excised in toto after 3 months. Main outcome measures Active mechanical properties were quantified as the contractile force generated in the presence of 120 mmol/l KC l. Passive mechanical properties (a tissue's ability to resist an applied force) were measured using a multiaxial protocol. Results Vaginal contractility decreased by 80% following implantation with the Gynemesh PS ( P = 0.001), 48% after S mart M esh ( P = 0.001), 68% after U ltra P ro P arallel ( P = 0.001) and was highly variable after U ltra P ro P erpendicular ( P = 0.16). The tissue contribution to the passive mechanical behaviour of the MVC was drastically reduced for Gynemesh PS ( P = 0.003), but not for SmartMesh ( P = 0.9) or UltraPro independent of the direction of implantation ( P = 0.68 and P = 0.66, respectively). Conclusions Deterioration of the mechanical properties of the vagina was highest following implantation with the stiffest mesh, Gynemesh PS . Such a decrease associated with implantation of a device of increased stiffness is consistent with findings from other systems employing prostheses for support." @default.
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- W2108340448 date "2012-12-14" @default.
- W2108340448 modified "2023-10-18" @default.
- W2108340448 title "Deterioration in biomechanical properties of the vagina following implantation of a high‐stiffness prolapse mesh" @default.
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- W2108340448 doi "https://doi.org/10.1111/1471-0528.12077" @default.
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