Evaluation of feasibility accuracy and safety after 79 O-ARM based stereotactic brain biopsies.

Frame-based Stereotactic Brain Biopsy (FSBB) is a minimally invasive procedure with a view to increasing the diagnostic yield. The aim of this study was to investigate the accuracy and safety of FSBB with the help of the intraoperative 3D O-ARM system. A preoperative MRI allowed for targeting the tissue to be sampled.

Surgical treatment of high-grade spondylolisthesis: Technique and results.

Background: Surgical management of high-grade spondylolisthesis is not only challenging but also controversial, from in situ fusion to complete reduction. We report our results of a safe three-stage spinal procedure in a single surgical session with seven patients diagnosed high-grade spondylolisthesis.

Hypothesis: Posterior fixation combined with interbody fusion is effective on reduction, ossification and clinical outcomes in high-grade spondylolisthesis.