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An Er:YAG laser bone cutting manipulator for precise rotational acetabular osteotomy
Summary
A novel surgical robot utilizing an Er:YAG laser precisely performs rotational acetabular osteotomy (RAO), minimizing trauma and improving patient recovery. This robotic system offers a promising advancement for orthopedic surgery.
Area of Science:
- Orthopedic Surgery
- Robotics
- Biomedical Engineering
Background:
- Rotational acetabular osteotomy (RAO) reconstructs bony defects using autologous tissue.
- Minimizing surgical trauma and accelerating recovery are key goals in RAO.
Purpose of the Study:
- To develop and evaluate a surgical robot for precise RAO using Er:YAG laser ablation.
- To reduce patient trauma and recovery time associated with RAO.
Main Methods:
- An Er:YAG laser system mounted on a robotic manipulator was used for bone ablation.
- Force sensors and springs maintained a precise 0.25 mm distance for effective ablation.
- Swine scapulae were used to evaluate laser ablation performance and manipulator precision.
Main Results:
- The robotic manipulator achieved precision within 0.3 mm for bone cutting.
- Optimal laser ablation efficiency was 0.21 mm³/secW at an 0.8 irradiation overlap ratio.
- Minimal charring and a transient surface temperature increase to 41.3°C were observed.
Conclusions:
- The developed robotic system enables precise bone cutting for RAO.
- Er:YAG laser ablation shows potential for reduced trauma and improved outcomes in orthopedic procedures.
- This technology is poised for future application in clinical orthopedics.
