[Biomechanical research of different polypropylene meshes in breast ptosis correction].
OBJECTIVE
To investigate the biomechanical properties of different polypropylene meshes, so as to select the proper mesh for breast ptosis correction as inner bra.


METHODS
Mini-pigs were used as animal model. Four different polypropylene meshes were implanted subcutaneously at abdomen. 90 d later, the specimens were taken out for biomechanical study.


RESULTS
The tensile strength, stress, relaxation and creep of the four meshes were different. The material and the knitting of the four meshes were different.


CONCLUSIONS
The biomechanical properties of relaxation and creep are important in maintaining the postoperative breast figure. Premilene Mesh LP is a new and light polypropylene mesh with mini-pores. Its biomechanical properties are superior to the others.
Wang
Zhi
Z
Plastic and Aesthetic Surgery Center, Beijing Union Hospital, Chinese Academy of Medical Sciences , Beijing 100032, China.
Zeng
Yan-jun
YJ
Zhang
Hai-lin
HL
Sun
Bao-dong
BD
Qiao
Qun
Q
D000818:Animals; D001672:Biocompatible Materials; D001696:Biomechanical Phenomena; D005260:Female; D016462:Mammaplasty; D008321:Mammary Glands, Animal / Q000601:surgery; D008422:Materials Testing; D011126:Polypropylenes; D013552:Swine; D013556:Swine, Miniature; D013718:Tensile Strength
D001672:Biocompatible Materials; D011126:Polypropylenes