Fan Z, Guan W, Jin Y
Department of Plastic Surgery, Shanghai Ninth People's Hospital, Shanghai Second Medical University.
Zhonghua Zheng Xing Shao Shang Wai Ke Za Zhi. 1994 Jan;10(1):34-7.
The purpose is to evaluate the biomechanical properties of conventional skin expansion, rapid expansion and unexpanded skin. In four pigs, 240 ml expanders of square shape are placed. The flaps are divided into three groups: (1) Rapid expansion flap: the expander is inflated daily until maximum volume is obtained. (2) Conventional expansion flap: inflation is done weekly. (3) Unexpanded skin is used as control. By using the tensometer, the skin is evaluated for stress strain, stress relaxation, density of strain energy, parameters of strength, and a mathematical model is obtained. We conclude that the biomechanical properties of the expanded skin are different from that of the unexpanded skin. But the biomechanical properties of conventional expanded skin are similar to that of rapid expanded skin. It is shown that the rapid expansion may be accepted in the practice.
目的是评估传统皮肤扩张、快速扩张和未扩张皮肤的生物力学特性。在4头猪身上植入240毫升方形扩张器。皮瓣分为三组：（1）快速扩张皮瓣：扩张器每天充气直至达到最大体积。（2）传统扩张皮瓣：每周充气一次。（3）未扩张皮肤用作对照。使用张力计评估皮肤的应力应变、应力松弛、应变能密度、强度参数，并获得一个数学模型。我们得出结论，扩张皮肤的生物力学特性与未扩张皮肤不同。但传统扩张皮肤的生物力学特性与快速扩张皮肤相似。结果表明，快速扩张在实践中可能是可行的。
