NCT05429099

Mandibular Reconstruction Preplanning (ViPMR)

Virtual Preplanning of Mandibular Reconstruction (ViPMR): a Phase III Randomized Controlled Clinical Trial

• Status: Recruiting
• Phase: Phase 2 / Phase 3
• Study type: Interventional
• Enrollment: 420 (estimated)
• Sponsor: University of British Columbia · Academic / Other
• Sex: All
• Age: 18 Years
• Healthy volunteers: Not accepted

Summary

Virtual Surgical Planning (VSP), where 3D modeling is used to create 3D-printed surgical guides, has been shown to improve outcomes for patients who undergo mandibular reconstruction surgery, usually due to invasion of cancer from the oral cavity to the jaw. This trial will directly compare the outcomes of patients who receive VSP versus patients who receive the current standard of care, which is Free-Hand Surgery (FHS). They will be randomized into either treatment at a 1:1 ratio and bony union rates will be compared between 12-month postoperative CT scans for each treatment group. Secondary objectives include comparing other short and long-term complication rates, reconstruction accuracy, quality of life, and functional outcomes of VSP and FHS. An economic analysis of VSP will also be performed.

Conditions

• Oral Cavity Cancer
• Oral Cancer

Interventions

Type	Name	Description
PROCEDURE	Virtual Surgical Planning (VSP)	The 3D reconstruction model, not requiring sterilization, will be sent directly to the SS. Prior to surgery, the SS will prebend a titanium fixation plate to the reconstruction model. Both the surgical cutting guides and titanium plate will be sterilized prior to use in surgery. If the planned resection cannot proceed (possibly due to tumour growth), the surgical team will note the reason for abandonment and conduct a standard FHS. Intraoperatively, the SS will apply the mandibular cutting guide to make the resection, remove the resected component and apply the pre-bent plate. Next, either the fibular or scapular cutting guide is applied to harvest the transplant which is then secured to the plate. The flap is re-vascularized by joining it to blood vessels in the neck.
PROCEDURE	Free-Hand Surgery	The SS will adopt their standard procedure for the mandibular resection and reconstruction. This typically involves bending a titanium fixation plate, harvesting of the bony flap, and shaping of the segments all intraoperatively based on the SS's judgement.

Timeline

• Start date: 2022-10-15
• Primary completion: 2025-10-15
• Completion: 2026-10-15
• First posted: 2022-06-23
• Last updated: 2025-07-24

Locations

1 site across 1 country: Canada