Evaluation of 3 different registration techniques in image-guided bimaxillary surgery

Area of Science:

• Orthognathic Surgery
• Medical Navigation Technology
• Surgical Precision

Background:

• Perioperative navigation is an emerging technology in orthognathic surgery.
• Accurate patient registration is crucial for the success of image-guided surgical procedures.

Purpose of the Study:

• To assess the feasibility of perioperative navigation in bimaxillary orthognathic surgery.
• To compare the success rates of three distinct registration methods: facial surface, anatomic landmark-based, and template-based registration.

Main Methods:

• A prospective study involving 85 patients undergoing bimaxillary orthognathic surgery between February 2010 and June 2012.
• Utilized the BrainLab navigation system for intraoperative guidance.
• Analyzed 18 cases of facial surface registration, 63 of anatomic landmark-based registration, and 8 of template-based registration.

Main Results:

• The overall success rate for facial surface-based registration was 39%.
• Template-based registration achieved a 100% success rate (P = 0.013).
• Anatomic landmark-based registration demonstrated a 95% success rate (P < 0.0001), significantly higher than facial surface registration.

Conclusions:

• Perioperative navigation is a feasible technique for guiding the maxilla during bimaxillary orthognathic surgery.
• The registration method is the critical determinant of intraoperative navigation success.
• Anatomic landmark-based registration is a reliable and recommended technique for image-guided bimaxillary surgery, whereas facial surface registration is unreliable.