Durability and Biological Response of a New Posterior Dynamic Stabilization System Using Polyethylene with Vitamin E

Figure 6

Microscopic image (Villanueva bone stain: photograph magnification 20 times). Polyethylene (PE) and metal abrasion powder were not found in the soft tissue around the screw head. Abnormal osteolysis was not observed in bone tissue around the screw, and inflammatory cell infiltration was only minimally observed.