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Frontal bone advancement stability with or without microplate fixation: an experimental study in rabbits
H W Losken1, D J Hurwitz, M P Mooney
1Division of Plastic and Reconstructive Surgery, University of Pittsburgh.
The Journal of Craniofacial Surgery
|April 1, 1991
Summary
Microplate fixation significantly improves frontal bone segment stability after surgical correction for craniosynostosis. This method reduces bone collapse, aiding unrestricted brain growth in pediatric patients.
Area of Science:
- Craniofacial Surgery
- Biomaterials Science
- Pediatric Neurosurgery
Background:
- Surgical correction of coronal suture craniosynostosis often involves frontal bone advancement.
- Segment instability and collapse are common complications, potentially hindering brain development.
Purpose of the Study:
- To evaluate the efficacy of microplate fixation in preventing frontal bone segment collapse in a rabbit model.
Main Methods:
- Sixteen rabbits underwent frontal bone advancement with varying segment lengths and fixation methods (Vicryl sutures vs. microplates).
- Bone collapse was assessed via lateral X-rays over 12 weeks post-surgery.
Main Results:
- Microplate fixation resulted in significantly less collapse (1% height reduction) compared to Vicryl fixation (30-45%).
- The difference in collapse between microplate and Vicryl groups was statistically significant (p < 0.01).
Conclusions:
- Rigid fixation with microplates effectively overcomes cranial growth and soft tissue tensions, preventing frontal bone collapse.
- Microplate fixation is a promising technique for enhancing stability in craniosynostosis surgery.