Assesment [sic] of cement augmentation and screw trajectory on pedicle screw fixation in osteoporotic vertebrae

Internal fixation of osteoporotic spines for fracture or deformity is currently difficult, owing to failure at the bone- implant interface. This study aims to ascertain whether pedicle screw trajectory and pedicle cortex retention can independently significantly affect fixation strength in osteoporotic vertebrae."MU Grant #00029187