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Updated: Dec 11, 2025

Orthopedic Robot-Assisted Femoral Neck System in the Treatment of Femoral Neck Fracture

Orthopedic Robot-Assisted Femoral Neck System in the Treatment of Femoral Neck Fracture

Published on: March 3, 2023

Indirect visual guided fracture reduction robot based on external markers.

Zhuoxin Fu¹, Hao Sun¹, Xinyu Dong^2,3

¹School of Artificial Intelligence and Data Sicience, Hebei University of Technology, No.8 Guangrong Road, Hongqiao District, Tiajin, 300130, China.

The International Journal of Medical Robotics + Computer Assisted Surgery : MRCAS

|August 20, 2020

Summary

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This summary is machine-generated.

This study introduces a novel robotic system for fracture reduction surgery, improving accuracy and reducing surgeon strain. The system minimizes radiation exposure and avoids fragment collisions, enhancing patient and surgeon safety.

Area of Science:

Orthopedic surgery
Robotics in medicine
Medical imaging

Background:

Traditional fracture reduction lacks accuracy and is physically demanding.
Radiographic monitoring improves accuracy but poses radiation risks to patients and surgeons.

Purpose of the Study:

To develop and evaluate a novel robotic system for accurate and safe fracture reduction surgery.
To reduce reliance on intraoperative radiography and minimize radiation exposure.

Main Methods:

A parallel robot system guided by binocular cameras was employed for fracture reduction.
External markers on bone fragments allowed for indirect position and posture measurement.
A pre-designed reduction path and position-based visual servo control were utilized.

Keywords:

fracture reduction indirect visual servo parallel robot trajectory planning

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Main Results:

Experiments on virtual and model bone cases demonstrated successful fracture reduction without collision.
Achieved high accuracy with angulation error of 3.3°±1.8° and axial rotation error of 0.8°±0.3°.
Transverse and axial stagger errors were minimal (2mm±0.5mm and 2.5mm±1mm), with complete deformity correction.

Conclusions:

The robotic solution offers accurate fracture reduction while minimizing radiographic use.
The system effectively prevents intraoperative fragment collisions, enhancing surgical safety.
This approach represents a significant advancement in minimally invasive orthopedic surgery.