Biomechanical Comparison of Pedicle Screw Augmented with Different Volumes of Polymethylmethacrylate in Osteoporotic and Severely Osteoporotic Synthetic Bone Blocks in Primary Implantation: An Experimental Study

Figure 4

The destruction of 1522-507# blocks and 1522-505# blocks after pullout test. “A0,” “A1,” “A2,” “A3,” “A4,” and “A5” indicate group A0, group A1, group A2, group A3, group A4, and group A5, respectively. “B0,” “B1,” “B2,” “B3,” “B4,” and “B5” indicate group B0, group B1, group B2, group B3, group B4, and group B5, respectively.