Comparative Histopathological Analysis of Nasal Osteotomy Techniques in a Rabbit Model

Area of Science:

• Plastic Surgery
• Orthopedic Surgery
• Biomaterials Science

Background:

• Nasal osteotomy is critical for correcting open roof deformities in rhinoplasty.
• Understanding recovery patterns of different osteotomy techniques is essential for optimizing surgical outcomes.
• Rabbit models offer a viable platform for evaluating bone healing mechanisms.

Purpose of the Study:

• To compare bone healing and recovery patterns of four distinct nasal osteotomy techniques.
• To evaluate the efficacy of piezosurgery versus an oscillating micro-saw for nasal osteotomy.
• To assess histological parameters of bone regeneration in a rabbit model.

Main Methods:

• Median osteotomies performed using piezosurgery (left) and oscillating micro-saw (right) in New Zealand rabbits.
• Internal and external osteotomies were also performed using a chisel on respective sides.
• Histological examination of granulation tissue formation, vascularization, inflammation, and new bone formation at 7 and 15 days post-operation.

Main Results:

• Piezosurgery showed statistically significant advantages in granulation tissue formation, neovascularization, and collagen fibril quantity at day 7 compared to the oscillating micro-saw (P < .05).
• Significant differences in connective tissue organization were observed between 7 and 15 days across all groups (P < .05).

Conclusions:

• Piezosurgery demonstrates superior bone healing outcomes compared to oscillating micro-saw techniques in nasal osteotomy within this rabbit model.
• The findings suggest piezosurgery may offer enhanced recovery and potentially better aesthetic results in rhinoplasty.
• Further clinical studies are warranted to translate these findings to human patients.