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2000
Volume 18, Issue 4
  • ISSN: 2212-7976
  • E-ISSN: 1874-477X

Abstract

Background

Bone external fixation technology is an important therapeutic approach for limb correction, primarily involving a class of external fixation correction mechanisms. It has achieved good results in limb lengthening and correcting deformities to restore limb function. In clinical practice, existing correction mechanisms face challenges such as high resistance between components, complex installation procedures, and high precision requirements for installation, requiring manual adjustment by physicians, which limits precise control and quantification of correction parameters.

Objective

To address these issues, an automated correction bone external fixation robot was designed based on traditional Ilizarov external fixation devices (TIEFD).

Methods

By increasing the number of unidirectional hinge connections, the robot can effectively reduce motion resistance. Subsequently, the robot was combined with the tibia for correction motion simulation, obtaining the motion parameters of the deformed bones during the correction process based on the trajectory of the tibia's point mass. Finally, correction motion experiments and finite element analysis (FEA) were conducted on the robot combined with a control system.

Results

The results showed that the robot could precisely control correction parameters, with the error range for rotational correction not exceeding 0.5 radians and the error range for traction correction not exceeding 0.2 mm. FAE, based on corrective force data, concluded that compared to (TIEFD), the robot could reduce bone stress by 16 MPa during the correction process.

Conclusion

The robot effectively reduces patient discomfort, this provides a reliable theoretical basis for bone external fixation technology and holds positive significance for the treatment of skeletal deformities. The application of patent-worthy robotic design represents a forward step in orthopedic corrective systems.

© 2025 Bentham Science Publishers
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2024-08-29
2025-09-24

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Automated External Bone Fixation Robot Design and Orthopedic Analysis
Recent Patents on Mechanical Engineering 18, 478 (2025); https://doi.org/10.2174/0122127976328647240815065103
/content/journals/meng/10.2174/0122127976328647240815065103
/content/journals/meng/10.2174/0122127976328647240815065103
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  • Article Type:     Research Article
Keyword(s): biomechanics; External fixation technology; finite element analysis; mechanism configuration; motion simulation; orthopedic experiment

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