OBJECT Primary and metastatic neoplasms of the lumbosacral junction frequently pose a complex problem for the surgical management and stabilization of the spine because of the anatomical and biomechanical factors of this transition zone between spine and pelvis. The authors have used a modification of the Galveston technique, originally described by Allen and Ferguson in the treatment of scolio...

In August 1993, in the USA, an FDA advisory committee of experts reviewed the scientific data on pedicle screws and decided that not enough was known about the shortterm problems or the long-term safety and effectiveness of these devices to allow their use to be approved. Manufacturers were therefore forbidden to promote the use of screws in the spine, and patients were warned that pedicle scre...

BACKGROUND Different strategies exist for reduction of the cervical spine. Placement of C1 lateral mass screws is a powerful technique but may be impossible in a degenerative or revision setting. We report the open, posterior-only, and instrumented reduction of a fixed C1-2 subluxation using occipital and C2/C3 fixation. The patient had rheumatoid arthritis and had undergone previous surgery of...

The increase in the number of available internal fixation devices for the cervical spine has promoted innovative stabilization of traumatic instability of the craniocervical junction. Traumatic injuries involving the craniocervical junction vary widely because of the complex osseous and ligamentous anatomy. These injuries can be purely ligamentous, such as occipitocervical dislocation, or can i...

Sacropelvic fixation is frequently used for the correction of complex pediatric spine deformities. S2-alar-iliac (S2AI) screws are a powerful method to obtain iliac fixation. Advantages include medialized starting point that requires less soft tissue dissection, no need connectors rod, and reduced screw head prominence. Though technique S2AI placement under free-hand fluoroscopic techniques has...