Maeda T, et al. - Experts evaluated the pullout strength of redirected pedicle screws with a larger diameter after lateral wall breach, redirected pedicle screws of the same diameter after medial wall breach, and redirected pedicle screws with a larger diameter following medial wall breach. Recovery of pullout strength was demonstrated by the redirected pedicle screws of larger diameter after a lateral or medial pedicle breach. Nonetheless, compared to the pullout strength of correctly aligned screws, the pullout strength of redirected pedicle screws of the same diameter after a medial pedicle breach is significantly less.