Purpose Literature studies showed a very wide range of pedicle screw loosening rates after
thoracolumbar stabilization, ranging from less than 1 to 15% in non-osteoporotic patients …

Background context A persistent challenge in spine surgery is improving screw fixation in
patients with poor bone quality. Augmenting pedicle screw fixation with cement appears to …

OBJECTIVE The accuracy of percutaneous pedicle screw placement has increased with the
advent of robotic and surgical navigation technologies. However, the effect of robotic …

Osteoporosis is a medical condition affecting men and women of different age groups and
populations. The compromised bone quality caused by this disease represents an important …

Study Design. Human cadaveric biomechanical study. Objective. To determine the fixation
strength of laterally directed, cortical pedicle screws under physiological loads. Summary of …

Purpose For posterior spinal stabilization, loosening of pedicle screws at the bone-screw
interface is a clinical complication, especially in the osteoporotic population. Axial pullout …

Study Design. Experimental, human cadaveric study. Objective. To assess the fixation
effects of injecting cement augmentation before screw insertion or after insertion of …

Osteoporosis is a common disease in elderly populations and is a major public health
problem worldwide. It is not uncommon for spine surgeons to perform spinal instrumented …

Study Design. Comparative biomechanical study was conducted in osteoporotic human
cadaveric spines. Objective. Determine the influence of the volume of polymethyl …

BACKGROUND: Pedicle screw fixation in a severely osteoporotic spine remains a challenge
for orthopedic surgeons. The previous literature does not adequately address the effects of …