Fig. 3.

Percent change of load induced canal narrowing relative to the tumor model. Changes above the orange line indicate decreased stability of the posterior vertebral body wall with an increase in motion for a given axial load. Changes below the dashed line indicate increased stability and a reduction in posterior wall motion. Specimens treated with lasering prior to vertebroplasty exhibited a trend toward reduced posterior wall motion (P = 0.095) while specimens treated only with vertebroplasty had an increase in motion with a high standard deviation of 253%