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A marker-less technique for measuring kinematics in the operating room
Lane L Frasier1, David P Azari2, Yue Ma1
1Wisconsin Surgical Outcomes Research Program, Department of Surgery, University of Wisconsin-Madison, Madison, WI.
Surgery
|June 26, 2016
Summary
This study introduces a marker-less technique for assessing surgical skill in open operations. The method effectively differentiates tasks and surgeon experience levels using kinematic data from video analysis.
Area of Science:
- Surgical skill assessment
- Medical technology
- Kinematics in surgery
Background:
- Traditional surgical skill assessment often uses tagged instruments or tracers.
- A novel marker-less technique was investigated for open operations.
- The technique aims to evaluate technical skill and differentiate tasks/experience levels.
Purpose of the Study:
- To develop and validate a marker-less technique for quantitative surgical skill assessment.
- To differentiate between various surgical tasks and surgeon experience levels.
- To provide a scalable approach for feedback on technical skill.
Main Methods:
- Operative field recorded via in-light camera during open operations.
- 138 video clips of suturing and tying tasks analyzed.
- Kinematic data generated by tracking hand regions of interest; multilevel modeling used.
Main Results:
- Kinematic differences detected using marker-less tracking.
- Suturing tasks showed significant interaction effects for speed and acceleration based on surgeon role and task category.
- Tying tasks exhibited significant differences across categories for speed and acceleration metrics.
Conclusions:
- Marker-less tracking successfully detects kinematic performance differences in open surgery.
- Suturing task evaluation is sensitive to surgeon role and task type.
- This approach offers a scalable method for quantitative surgical skill feedback.
