RecruitingNot ApplicableNCT05429099

Mandibular Reconstruction Preplanning (ViPMR)

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


Sponsor

University of British Columbia

Enrollment

420 participants

Start Date

Oct 15, 2022

Study Type

INTERVENTIONAL

Conditions

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.


Eligibility

Min Age: 18 Years

Plain Language Summary

Simplified for easier understanding

This study is testing a computer-assisted planning system for jaw reconstruction surgery. Surgeons use detailed pre-surgical 3D planning (using CT scans and virtual models) to improve the precision of jaw removal and reconstruction using bone taken from the leg or shoulder. **You may be eligible if:** - You are over 18 years old - You need surgery to remove part or all of your jawbone (mandibulectomy) and reconstructive surgery using a bone flap - You are cognitively able to understand and participate in the study - You provide informed consent **You may NOT be eligible if:** - You have metastatic disease or severe health conditions making surgery too risky - You do not have a recent CT scan and cannot or will not get one within 6 days before surgery - You have had head or neck cancer in the past 5 years - You have had previous head or neck radiation treatment at any time - You are pregnant or breastfeeding Talk to your doctor to see if this trial is right for you.

This summary was AI-generated to explain the trial in plain language. It is not medical advice. Always discuss eligibility with your doctor before enrolling in a clinical trial.

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Interventions

PROCEDUREVirtual 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.

PROCEDUREFree-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.


Locations(1)

Vancouver General Hospital

Vancouver, British Columbia, Canada

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NCT05429099


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