Biomechanical parameters of open polyurethane test block

The open polyurethane block model was developed and produced by Pacific Research Laboratories, and its fatigue performance is consistent with the strain accumulation characteristics of human trabecular bone. Therefore, it can be used to simulate the skeletal state of human osteoporosis. The relevant biomechanical parameters are as follows:

The open polyurethane block model is made of polyurethane, epoxy resin, and structural fillers. Its porosity exceeds 95%, and the pore size is 1.5-2.5 millimeters. The three-dimensional porous structure of this material is similar to the arrangement of natural bone trabeculae, and different bone characteristics can be simulated by adjusting the density.

First of all, in the dynamic test scenario, the open rigid foam can accurately measure the fretting parameters (such as the relative displacement under rotation, flexion and extension stress) of the implant and the * * * interface, and its fatigue performance is consistent with the strain accumulation characteristics of human vertebral cancellous bone. Again, this material is widely used in cement penetration experiments to evaluate the uniformity of * * * distribution and fixed strength through standardized in vitro models.

In summary, the open polyurethane block model provides a consistent physical test sample model, enabling in vitro studies to produce representative and comparable results. Therefore, the open polyurethane block model is an important tool for studying the in vitro mechanical properties of biomedical materials.