Optimizing joint placement and motion schedule for 2-DOF computer-assisted distraction osteogenesis

Area of Science:

• Orthopedic Surgery
• Biomedical Engineering
• Computer-Integrated Surgery

Background:

• Distraction osteogenesis is a surgical technique for correcting severe bone deformities.
• Current methods rely on radiographic measurements and complex fixators like the Taylor spatial frame.
• Limitations exist in the precision and adaptability of existing fixator systems.

Purpose of the Study:

• To propose and validate a novel computer-integrated surgery system for bone deformity correction.
• To demonstrate the feasibility of a two-degree-of-freedom fixator for complex orthopedic cases.
• To establish methods for fixator configuration and trajectory planning in distraction osteogenesis.

Main Methods:

• Development of a novel two-degree-of-freedom fixator with arbitrarily positionable and orientable joints.
• Implementation of computer-integrated surgery principles for planning and execution.
• Description of fixator configuration methods and trajectory planning algorithms.

Main Results:

• The proposed two-degree-of-freedom fixator enables precise alignment of bone fragments.
• The system allows for controlled bone fragment movement along a desired trajectory.
• Feasibility demonstrated for various complex bone deformity types and realignment paths.

Conclusions:

• The novel two-degree-of-freedom fixator is a viable tool for computer-integrated distraction osteogenesis.
• This system offers enhanced adaptability and precision compared to traditional methods.
• The device shows significant potential for treating a wide range of bone deformities.