Clinical Scorecard: Assessment of In-House Haptic Technology for Virtual Reconstruction in Complex Mandibular Fractures

At a Glance

Key Highlights

• Mandible fractures are common facial injuries requiring accurate 3D reconstruction for functional and aesthetic outcomes.
• Haptic assisted surgical planning (HASP) provides intuitive 3D interaction with bone fragments using force feedback and stereo visualization.
• HASP enables surgeons to perform virtual reductions independently, potentially reducing planning time and improving accuracy.

Guideline-Based Recommendations

Diagnosis

• Use CT or CBCT imaging to acquire detailed 3D data of mandibular fractures.
• Segment bone fragments using semi-automatic tools like BoneSplit for precise separation.

Management

• Employ virtual surgical planning systems with haptic feedback to simulate and plan fracture reduction.
• Surgeons should manipulate virtual bone fragments to assess fit and occlusion before surgery.

Monitoring & Follow-up

• Evaluate accuracy by comparing virtual reductions to intact mandible models using shape overlap metrics.
• Assess precision through repeated virtual reductions by multiple observers.

Risks

• Delays in planning can occur with commercial VSP systems due to reliance on external engineers and 2D interfaces.
• Visual-only 3D manipulation without haptic feedback may miss interpenetration of fragments.

Patient & Prescribing Data

Patients with complex mandibular fractures requiring surgical reconstruction

In-house haptic VSP allows surgeons to perform timely and precise preoperative planning, potentially improving surgical outcomes and reducing operative time.

Clinical Best Practices

• Integrate haptic technology in virtual planning to enhance tactile feedback and 3D spatial understanding.
• Use head-tracked stereo glasses for accurate depth perception during virtual manipulation.
• Perform multiple virtual reductions to ensure reproducibility and refine surgical plans.
• Combine semi-automatic segmentation tools with haptic planning for efficient workflow.

References

• Mandible fractures epidemiology and treatment factors
• Virtual surgical planning in cranio-maxillofacial surgery
• Haptic technology in surgical simulation
• HASP system development and evaluation
• BoneSplit segmentation tool