Ti-24Nb-4Zr-8Sn Alloy Pedicle Screw Improves Internal Vertebral Fixation by Reducing Stress-Shielding Effects in a Porcine Model

Figure 3

Strain resistance measurements. (a) After forward flexion load, strain resistance was measured before pedicle screw fixation. (b) After backward flexion load, strain resistance was measured before pedicle screw fixation. (c) After forward flexion load, strain resistance was measured in Ti-24Nb-4Zr-8Sn group after pedicle screw fixation. (d) After forward flexion load, strain resistance was measured in Ti-6A1-4V group after pedicle screw fixation. (e) After backward flexion load, strain resistance was measured in Ti-24Nb-4Zr-8Sn group after pedicle screw fixation. (f) After backward flexion load, strain resistance was measured in Ti-6A1-4V group after pedicle screw fixation.

(a)

(b)

(c)

(d)

(e)

(f)