3D MODEL of an anatomically inert human hand: feasibility study

Area of Science:

• Biomedical Engineering
• Anatomical Modeling
• Surgical Simulation

Background:

• Congenital hand malformations require complex surgical interventions.
• Lack of standardized protocols necessitates innovative training and planning tools.
• Simulation offers a potential solution to optimize surgical outcomes.

Purpose of the Study:

• To design, produce, and evaluate a 3D-printed anatomical support for complex hand surgeries.
• To create a patient-specific model for improved surgical success rates.
• To establish a printing protocol for anatomical hand models.

Main Methods:

• Acquired MRI imaging of a healthy hand for segmentation.
• Utilized multi-material and silicone 3D printing for bone, muscle, tendon, skin, and fat tissues.
• Performed dissections on the 3D model and a cadaveric hand for comparative evaluation.
• Assessed realism, handling, and surgical/training utility via surgeon grading.

Main Results:

• The 3D model accurately replicated patient-specific anatomy, avoiding cadaver limitations like rigidity and fragility.
• The model facilitates rigorous adherence to individual patient anatomy.
• Limitations include the absence of detailed vascular and nervous networks, necessitating further optimization.

Conclusions:

• Validated 3D-printed anatomical models offer significant potential for preoperative surgical planning.
• Further assessment is required to determine the postoperative esthetic and functional benefits in complex surgeries.
• This technology serves as a crucial prerequisite for studies involving pediatric patients with congenital hand malformations.