Publications by authors named "F Wanivenhaus"
To demonstrate the preoperative workup, surgical planning and execution of transforaminal endoscopic thoracic discectomy (TETD) for a giant calcified disc herniation. Surgeries for symptomatic thoracic disc herniations are rare and challenging. The main goal is to achieve sufficient decompression with minimal manipulation of the spinal cord.
View Article and Find Full Text PDFBackground: Magnetic resonance imaging may suggest spinal cord compression and structural lesions in degenerative cervical myelopathy (DCM) but cannot reveal functional impairments in spinal pathways. We aimed to assess the value of contact heat evoked potentials (CHEPs) in addition to MRI and hypothesized that abnormal CHEPs may be evident in DCM independent of MR-lesions and are related to dynamic mechanical cord stress.
Methods: Individuals with DCM underwent neurologic examination including segmental sensory (pinprick, light touch) and motor testing.
Article Synopsis
- This study explored the feasibility of 7 T MR neurography for imaging the lumbosacral plexus, comparing it to standard 3 T MR neurography in healthy subjects.
- Results showed that 7 T MRI significantly improved the visibility of lumbar nerve structures, but it also introduced more image artifacts.
- While overall image quality was similar between the two techniques, the improved visualization capabilities of 7 T MR neurography suggest it is a promising option for studying the lumbosacral plexus despite the increased artifacts.
Reducing residual forces in spinal fusion using a custom-built rod bending machine.
Comput Methods Programs Biomed
April 2024
Background And Objective: As part of spinal fusion surgery, shaping the rod implant to align with the anatomy is a tedious, error-prone, and time-consuming manual process. Inadequately contoured rod implants introduce stress on the screw-bone interface of the pedicle screws, potentially leading to screw loosening or even pull-out.
Methods: We propose the first fully automated solution to the rod bending problem by leveraging the advantages of augmented reality and robotics.
Backgroud Context: Pedicle screws are commonly used for posterior fixation of the lumbar spine. Inaccuracy of screw placement can lead to disastrous complications.
Purpose: As fluoroscopic assisted pedicle screw instrumentation is the most frequently used technique, the aim of this study was to assess the specificity, sensitivity and accuracy of intraoperative fluoroscopy to detect mediolateral screw malpositioning.