Titanium cranioplasty using 3-D computer modelling of skull defects.

Area of Science:

• Neurosurgery
• Biomedical Engineering
• Materials Science

Background:

• The original bone flap is the ideal cranial prosthesis, but its unavailability necessitates alternatives.
• Cranioplasty plate manufacturing has historically been challenging, especially for complex defects, leading to poor fit, insertion difficulties, and complications like scalp necrosis and infection.

Purpose of the Study:

• To evaluate the efficacy and outcomes of titanium cranioplasty plates manufactured using computer-aided design and manufacturing (CAD/CAM) methods for cranial defect repair.

Main Methods:

• Cranioplasty defects were modeled using CT scan data.
• Titanium plates were manufactured using computer-driven milling and selective laser sintering (SLS) based on these models.
• The fit, ease of insertion, cosmetic results, and postoperative complications of these custom plates were assessed.

Main Results:

• The CAD/CAM-manufactured titanium plates demonstrated a precise fit for even the most complex cranial defects.
• These custom plates were easy to insert and yielded excellent cosmetic results.
• No instances of postoperative scalp necrosis or infection were observed with the use of these titanium implants.

Conclusions:

• Computer-aided manufacturing of titanium cranioplasty plates offers a precise and effective solution for cranial defect repair.
• While current costs and time may limit routine use, advancements in technology suggest this may become a standard technique in the future.