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Computer-Aided Three-Dimensional Virtual Surgical Planning in Complex Skull Base Reconstruction for Sphenoid Wing
Hao-Hsiang Hsu1, Chia-En Wong1, Jing-Wei Lee2
1Section of Neurosurgery.
The Journal of Craniofacial Surgery
|August 18, 2021
Summary
Neurofibromatosis type 1 can cause unilateral sphenoid dysplasia, leading to vision loss and facial deformity. A novel multimodal technique successfully reconstructed the skull base and restored facial symmetry in a patient.
Area of Science:
- Neurosurgery
- Craniofacial Surgery
- Medical Imaging
Background:
- Unilateral sphenoid dysplasia, a rare manifestation of neurofibromatosis type 1 (NF1), presents challenges in surgical reconstruction due to complex cranial base defects and asymmetry.
- Pulsatile exophthalmos, decreased vision, and facial deformity are common symptoms requiring surgical intervention to prevent visual deterioration.
- Traditional bone grafts for cranial base reconstruction are often unsustainable due to resorption, highlighting the need for advanced reconstructive techniques.
Purpose of the Study:
- To demonstrate a multimodal technique for skull base reconstruction and facial symmetry restoration in a patient with NF1-associated unilateral sphenoid dysplasia.
- To evaluate the efficacy of mirror-image-based virtual surgical planning, stereolithography, and neuronavigation in managing complex craniofacial defects.
Main Methods:
- Preoperative virtual surgical planning utilizing mirror-image simulation based on the unaffected contralateral side.
- Fabrication of a stereolithographic skull-base model for designing a patient-specific titanium mesh implant.
- Intraoperative neuronavigation guidance during transcranial surgical reconstruction.
Main Results:
- Successful reconstruction of the complex skull base defect and restoration of facial symmetry.
- Immediate resolution of pulsatile proptosis observed postoperatively.
- Demonstrated precision and sustainability of patient-specific implants in complex craniofacial reconstruction.
Conclusions:
- A multimodal approach combining virtual planning, stereolithography, and neuronavigation offers a precise and sustainable solution for complex skull base defects in NF1 patients.
- This technique facilitates tailored reconstruction, addressing both functional and cosmetic concerns in challenging craniofacial anomalies.
- The study highlights the potential of advanced digital and surgical technologies in improving outcomes for rare craniofacial conditions.
