Tan Wei-Qiang, Qiao Qun, Zhao Ru, Sun Jio-Ming, Liu Cheng, Liu Zhi-Fei, Yin Heng, Qi Ke-Ming
Plastic and Aesthetic Surgery Center, Chinese Union Medical College Hospital, Beijing 100032, China.
Zhonghua Zheng Xing Wai Ke Za Zhi. 2004 Jul;20(4):274-6.
To study the polypropylene mesh acted for the moulding and support.
Four mini-pigs were used in this experimental research. A polypropylene mesh was implanted under the skin on one side of each pig. An expander was thereafter placed in the deep layer to imitate the action of gravity to the skin and mesh. The specimens were collected in two different times for the biomechanics and histology examinations.
The biomechanical data were shown lower and the histological properties were found changeable in the expanded skin without the mesh support, compared with the normal skin. However, the changes did not occur in the expanded skin with the mesh support. Furthermore, the tensile strength and elastic modulus of the polypropylene mesh were significant less than the human skin.
The Polypropylene mesh could prevent the extended skin effectively and has moulding and support effects.
研究聚丙烯网片的塑形和支撑作用。
本实验研究使用4只小型猪。在每只猪的一侧皮下植入聚丙烯网片。之后在深层放置扩张器以模拟重力对皮肤和网片的作用。在两个不同时间点采集标本进行生物力学和组织学检查。
与正常皮肤相比,在无网片支撑的扩张皮肤中,生物力学数据显示较低,且组织学特性发现有变化。然而,在有网片支撑的扩张皮肤中未发生这些变化。此外,聚丙烯网片的拉伸强度和弹性模量显著低于人体皮肤。
聚丙烯网片可有效防止皮肤扩张,并具有塑形和支撑作用。