Dura Vibration Difference Between PTP Bone Resection and Upper Facet Joints En Bolc Resection in Posterior Thoracic...

Area of Science:

• Spinal surgery
• Neurosurgery
• Biomechanics

Background:

• Traditional pedicle-to-pedicle (PTP) posterior thoracic decompression may risk spinal cord injury.
• Complete decompression can be challenging with the PTP approach.

Purpose of the Study:

• To evaluate the safety and effectiveness of the pedicle-ossification tunnel (POT) for posterior thoracic decompression.
• To compare the POT method with the traditional PTP approach.

Main Methods:

• Sheep thoracic vertebrae were used as experimental specimens.
• A simulated spinal cord (water sac) was monitored for vibration displacement using a laser displacement sensor (LDS).
• Surgical decompression was performed using both POT and PTP methods with a high-speed bur, analyzing vibration data and curvature changes.

Main Results:

• The POT approach demonstrated significantly lower vibration amplitude and curvature values compared to PTP (p < 0.05).
• Vibration decreased as the milling position approached the POT.
• Detailed surgical steps for POT decompression were described.

Conclusions:

• The POT pathway is a safe and effective method for posterior thoracic decompression.
• POT achieves complete decompression while minimizing contact with the dura, thereby reducing spinal cord irritation.