Balancing Rigidity and Safety of Pedicle Screw Fixation via a Novel Expansion Mechanism in a Severely Osteoporotic Model

Figure 6

Graphical representation of postpullout damage to trabecular test blocks between nonaugmented and PMMA augmented pedicle screws of the same design. Data here is presented as median and range due to the nonparametric nature of the statistical test performed.