A contoured anterior spinal fixation plate

Current anterior spinal fixation plates lack sufficient width and contouring to accommodate multiple screw placements in each vertebra. Prior research has shown that existing plates are too narrow, limiting screw options to two per vertebra. This constraint may compromise stability in complex spinal procedures. Surgeons often encounter challenges in achieving optimal fixation when treating conditions like tumor resection or burst fractures. The anatomical variability of the spine requires implants that adapt to different vertebral regions. No prior work had resolved the issue of vascular contact in the lower thoracic and lumbar regions. The need for a contoured plate that avoids iliac vessel contact remains unmet. This gap motivated the development of a new plate design with specific anatomical considerations.

This research aimed to address the limitations of current anterior spinal fixation plates. The specific problem is the inadequate design of existing plates, which restricts screw placement and increases vascular risks. The motivation stems from the clinical need for improved stabilization following corpectomy or decompression procedures. The study sought to develop a plate that accommodates multiple screws per vertebra. The design focused on anatomical contouring to fit the lateral spine. The goal was to prevent vascular complications through smooth surface engineering. The plate was intended for use in T11 to L5 regions. The study also aimed to create a tapered variant for the L5 area to avoid iliac vessel contact.

The National Research Council of Canada’s Biomedical Engineering Department designed and tested a new anterior spinal fixation plate. The plate was contoured to fit the lateral spine and wide enough for three screws per vertebra. The design incorporated smooth surfaces to reduce vascular risks. Three plate lengths were developed for T11 to L5 regions. A tapered variant was created for the L5 area to avoid iliac vessel contact. The plate’s geometry was optimized for anatomical fit and screw placement flexibility. Testing focused on mechanical stability and vascular clearance. The design process emphasized clinical applicability for complex spinal procedures.

The new plate design allows three screws per vertebra, improving fixation stability. The plate’s width and contouring accommodate multiple screw placements. Smooth surfaces reduce the risk of vascular injury during implantation. Three plate lengths were developed for T11 to L5 regions. A tapered L5 plate prevents contact with iliac vessels. The design addresses limitations of existing plates, such as narrow width and limited screw options. Testing confirmed the plate’s anatomical fit and mechanical performance. The device is suitable for corpectomy, decompression, and other complex spinal procedures.

The authors propose that the new plate design improves anterior spinal fixation capabilities. The plate’s width and contouring allow three screws per vertebra, enhancing stability. The smooth surface design reduces vascular complication risks. The tapered L5 variant prevents iliac vessel contact in lower lumbar procedures. The plate is suitable for use in T11 to L5 regions. The design addresses limitations of existing plates in width and screw placement options. The device is intended for stabilization following corpectomy and decompression procedures. The authors suggest that this plate offers a practical solution for complex spinal stabilization.