Clinical Scorecard: Utilizing Distance Mapping in 3D Virtual Surgical Planning for Hand, Wrist, and Forearm Procedures: A Strategy to Minimize Errors

At a Glance

Key Highlights

• Distance mapping visualizes joint space thickness and bone positioning using colour-coded maps to detect malpositions.
• Certified medical software and imaging modalities (CBCT, MDCT) are essential for accurate 3D modeling and planning.
• 3D printed patient-specific guides based on virtual planning improve surgical precision and postoperative outcomes.

Guideline-Based Recommendations

Diagnosis

• Use cone beam computed tomography (CBCT) or multislice/multidetector CT (MSCT/MDCT) to acquire DICOM images for 3D modeling.
• Perform segmentation of wrist and forearm bones using certified software (e.g., Disior Bonelogic 2.0) for accurate anatomical representation.
• Apply distance mapping techniques to assess joint congruency and detect malpositions preoperatively.

Management

• Plan corrective osteotomies and scaphoid reconstructions virtually using 3D models and distance maps to guide surgical approach.
• Utilize 3D printed, biocompatible patient-specific cutting guides manufactured with certified printers for intraoperative accuracy.
• Incorporate dynamic and static distance mapping data to optimize implant positioning and joint alignment.

Monitoring & Follow-up

• Use postoperative distance mapping to perform quality control assessments of bone positioning and joint congruency.
• Compare preoperative and postoperative 3D models to evaluate surgical success and functional outcomes.

Risks

• Inaccurate planning due to use of uncertified software or inadequate imaging may lead to surgical failure and poor outcomes.
• Limited field of view in CBCT may necessitate alternative imaging (MDCT) for complete forearm assessment, increasing radiation exposure.
• Radiation doses should be minimized by selecting appropriate imaging protocols balancing image quality and patient safety.

Patient & Prescribing Data

Patients with distal radius fractures, malunions, or scaphoid nonunions requiring surgical correction

3D virtual planning with distance mapping enhances surgeon confidence, reduces operative time, and improves functional outcomes by enabling precise osteotomies and implant placement.

Clinical Best Practices

• Always use certified medical software for 3D surgical planning to ensure accuracy and reliability.
• Employ colour-coded distance mapping to visualize joint spaces and detect malpositions before surgery.
• Use CBCT for wrist imaging when possible; switch to MDCT for larger fields of view such as the entire forearm.
• Generate patient-specific 3D printed guides with certified biocompatible materials to improve surgical precision.
• Perform postoperative distance mapping to verify surgical results and guide rehabilitation.

References

• Carrigan et al. - 3D finite element model of wrist load transmission
• Rikli et al. - Force transmission during carpal motion
• Marai - Colour-coded distance mapping for joint space visualization
• Foumani - Dynamic distance mapping of radiocarpal joint
• Robinson et al. - Joint congruency maps using 4D-CT
• Disior Bonelogic 2.0 software
• CBCT and MDCT imaging protocols and radiation doses