Development and Biomechanical Study of the Novel PRUNUS Plate-Screw System

Area of Science:

• Orthopedic Surgery
• Biomedical Engineering
• Spinal Implants

Background:

• Anterior cervical decompression surgery often uses plate-screw fixation systems.
• Concerns exist regarding the design and complications associated with current anterior cervical plates.
• A novel anterior cervical plate system was developed to address these issues.

Purpose of the Study:

• To evaluate the biomechanical properties of a novel PRUNUS plate-screw system.
• To compare the PRUNUS system against the established Atlantis plate-screw system.
• To assess stability, fatigue resistance, and pull-out strength in a cadaveric model.

Main Methods:

• Utilized twelve fresh goat cadaveric specimens.
• Employed a high-precision digital grating displacement sensor system.
• Compared the PRUNUS system to the Atlantis system in destabilized cervical spines.

Main Results:

• The PRUNUS system demonstrated equivalent 3D stability and immediate postoperative stability.
• Fatigue life and strength of the PRUNUS system were comparable to the Atlantis system.
• The PRUNUS system exhibited superior overall fixation and locking performance, confirming long-term efficacy.

Conclusions:

• The novel PRUNUS plate-screw system shows excellent biomechanical properties.
• It provides effective and safe stabilization for the cervical spine.
• The PRUNUS system meets the requirements for rigid internal fixation in anterior cervical surgery.