INTRODUCTION AND HYPOTHESIS: The experiment evaluated different lightweights (<32 g/m(2)) in terms of shrinkage and biomechanics. METHODS: PP-8 (polypropylene of 7.6 g/m(2)), PP-s (PP-8 with absorbable sheets), PP-32 (PP with absorbable fibers; 32.0 g/m(2)) and polyvinylidinefluoride (PVDF; 24.9 g/m(2)) augmented primary sutured repairs of the anterior abdominal wall in a total of 40 rabbits. Rabbits were implanted by only one type of mesh at four abdominal sites. After 7, 14, 30, 60 and 120 days, 2 rabbits were sacrificed per group. Three additional unoperated rabbits were used as controls. Shrinkage and uni-axial tensiometry were evaluated. RESULTS: PP-s implants wrinkled in 70%. PP-32 did not shrink whereas PP-8 and PVDF shrank by 20%. Explants were as strong as the controls; however, they differed in compliance. At lower stress, the tested materials were equally stiff. CONCLUSIONS: The biomechanical behaviour of the tested lightweights does not mimic that of native controls. Weight reduction does not prevent shrinkage.
INTRODUCTION AND HYPOTHESIS: The experiment evaluated different lightweights (<32 g/m(2)) in terms of shrinkage and biomechanics. METHODS:PP-8 (polypropylene of 7.6 g/m(2)), PP-s (PP-8 with absorbable sheets), PP-32 (PP with absorbable fibers; 32.0 g/m(2)) and polyvinylidinefluoride (PVDF; 24.9 g/m(2)) augmented primary sutured repairs of the anterior abdominal wall in a total of 40 rabbits. Rabbits were implanted by only one type of mesh at four abdominal sites. After 7, 14, 30, 60 and 120 days, 2 rabbits were sacrificed per group. Three additional unoperated rabbits were used as controls. Shrinkage and uni-axial tensiometry were evaluated. RESULTS:PP-s implants wrinkled in 70%. PP-32 did not shrink whereas PP-8 and PVDF shrank by 20%. Explants were as strong as the controls; however, they differed in compliance. At lower stress, the tested materials were equally stiff. CONCLUSIONS: The biomechanical behaviour of the tested lightweights does not mimic that of native controls. Weight reduction does not prevent shrinkage.
Authors: Masayuki Endo; Andrew Feola; Nikhil Sindhwani; Stefano Manodoro; Jarek Vlacil; Alexander Carl Engels; Filip Claus; Jan A Deprest Journal: Int Urogynecol J Date: 2014-01-22 Impact factor: 2.894
Authors: Rita Rynkevic; Pedro Martins; Francisco Pereira; Nilza Ramião; António A Fernandes Journal: J Mater Sci Mater Med Date: 2017-09-27 Impact factor: 3.896
Authors: J Farthmann; D Watermann; A Niesel; C Fünfgeld; A Kraus; F Lenz; H J Augenstein; E Graf; B Gabriel Journal: Int Urogynecol J Date: 2012-08-29 Impact factor: 2.894