Objective
To review the research background, biomechanical characteristics, and clinical application of fenestrated pedicle screw (FPS).
Methods
The recent literature about the study and application of FPS was reviewed, analyzed, and summarized.
Results
Compared with the technique of conventional pedicle screw augmentation, FPS can be augmented with polymethyl methacrylate (PMMA) through inner central pore and side holes. Hence, the augmentation process of FPS is more convenient during operation. The biomechanics of PMMA augmented FPS is strong enough for instrumentation in osteoporotic vertebra body and the way of FPS PMMA augmentation can reduce the risk of PMMA leakage.
Conclusion
FPS is an innovation in the technology of spinal instrumentation, which is expected to improve the clinical outcome of PMMA augmented pedicle screw in osteoporotic vertebra body fixation.
