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

<div>Illustration of pedicle screws used in this study. (a) Standard pedicle screw. (b) Single-armed expandable pedicle screw. (c) Single-armed expandable pedicle screw (sectional view).</div>

BioMed Research International

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Figure 1

Figure 1: Balancing Rigidity and Safety of Pedicle Screw Fixation via a Novel Expansion Mechanism in a Severely Osteoporotic Model 