STUDY DESIGN Retrospective. PURPOSE This study aims to investigate the accuracy of the oblique fluoroscopic view, based on preoperative computed tomography (CT) images for accurate placement of lumbosacral percutaneous pedicle screws (PPS). OVERVIEW OF LITERATURE Although PPS misplacement has been reported as one of the main complications in minimally invasive spine surgery, there is no com...

BACKGROUND The aim of this study was to compare the accuracy of cervical pedicle screw placement between a three-dimensional guidance system and manual manipulation. MATERIAL AND METHODS Eighteen adult cadavers were randomized into group A (n=9) and group B (n=9). Ninety pedicle screws were placed into the C3-C7 under the guidance of a three-dimensional locator in group A, and 90 screws were ...

STUDY DESIGN Controlled laboratory study. OBJECTIVE To evaluate the biomechanical characteristics of a new expandable interbody cage in single-segment posterior lumbar interbody fusion (PLIF) using cadaveric lumbar spines. SUMMARY OF BACKGROUND DATA One of the popular methods of treating lumbar spine pathologies involves a posterior lumbar interbody fusion using bilateral interbody nonexpan...

Pedicle screw constructs have become the mainstay for surgical correction in patients with spinal deformities. To reduce or avoid the risk of pedicle screw-based complications and to decrease the costs associated with pedicle screw instrumentation, some authors have introduced interval, skipped, and key-vertebral pedicle screw strategies for correction. However, there have been no comparisons o...

Purpose. To preliminarily evaluate the feasibility and accuracy of using rapid prototyping drill templates (RPDTs) for C1 lateral mass screw (C1-LMS) and C2 pedicle screw (C2-PS) placement. Methods. 23 formalin-fixed craniocervical cadaver specimens were randomly divided into two groups. In the conventional method group, intraoperative fluoroscopy was used to assist the screw placement. In the ...

RATIONALE Kummell disease is described as avascular necrosis of a vertebral body that occurred in a delayed fashion after a minor trauma. Anterior, posterior, and anterior-posterior approaches have been reported. Nevertheless, there is no standard treatment for patients with Kummell disease. PATIENT CONCERNS We reported a successful cement-augmented pedicle screw placement in a patient with K...

STUDY DESIGN Prospective randomized clinical trial. OBJECTIVE To compare the accuracy and time using of pedicle screw placement between electronic conductivity device (ECD) and normal pedicle finder (NPF) in posterior surgery of scoliosis, through a randomized clinical trial. SUMMARY OF BACKGROUND DATA Pedicle screw insertion for scoliosis correction can be associated with increased pedicle...

Since many years surgeons are trying to optimize pedicle screw placement in spine surgeries to reduce severe complications. Intraoperative image guidance could improve the accuracy in pedicle screw placement (Tain 2011). However no significant reduction of complications could be seen (Verma 2010). With the implementation of robotic 3D flat-panel detectors in hybrid operating rooms a new form of...

OBJECTIVE The authors performed a retrospective study to assess the accuracy and clinical benefits of a navigation coupled with O-arm® system guided method in the thoracic and lumbar spines by comparing with a C-arm fluoroscopy-guided method. METHODS Under the navigation guidance, 106 pedicle screws inserted from T7 to S1 in 24 patients, and using the fluoroscopy guidance, 204 pedicle screws ...

BACKGROUND The use of thoracic pedicle screws in spinal deformity, trauma, and tumor reconstruction is becoming more common. Unsuccessful screw placement may require salvage techniques utilizing transverse process hooks. The effect of different starting point placement techniques on the strength of the transverse process has not previously been reported. The purpose of this paper is to determin...