Efficacy of Navigation Systems With Smart Delivery Tools in Enhancing the Accuracy of Percutaneous Pedicle Screw Insertion.

Purpose Minimally invasive surgical techniques are advancing in spinal surgery, creating a need for the development of surgical support systems. This study evaluates the efficacy of a compact navigation system with smart delivery tools in percutaneous pedicle screw insertion. Methods This retrospective observational study included consecutive thoracic or lumbar spinal fusion patients with percutaneous pedicle screw placement treated from November 2022 to July 2023 in a Japanese private hospital.

Clinical and Radiographic Outcomes of C1 Laminectomy Without Fusion in Patients With Cervical Myelopathy That Is Associated With a Retro-odontoid Pseudotumor.

Purpose: A retro-odontoid pseudotumor that is not associated with rheumatoid arthritis or hemodialysis is clinically rare. The majority of surgeons select transoral resection as the surgical treatment, often followed by posterior fusion or posterior decompression and fusion. In contrast, some authors have reported success with simple decompression without posterior stabilization in cases where atlanto-axial instability (AAI) is either absent or minor.

Technical improvements and results of open-door expansive laminoplasty with hydroxyapatite implants for cervical myelopathy.

Objective: A new, modified technique of cervical open-door laminoplasty with hydroxyapatite implants was developed to enlarge the spinal canal in stable fashion yet preserve the architecture of the cervical spine and surrounding tissues. To assess the efficacy of this technique, a retrospective review of neurological and radiological outcomes after cervical laminoplasty was conducted.

Methods: Clinical charts and cervical x-rays of 151 patients with cervical stenotic myelopathy were reviewed.