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Correlating motor performance with surgical error in laparoscopic cholecystectomy.
1Department of Surgery, University of British Columbia, Vancouver, British Columbia, V5Z 4E3, Canada.
Surgical Endoscopy
|January 5, 2006
Summary
Quantifying motor performance measures (MMPs) in laparoscopic surgery is feasible. Novice surgeons showed higher velocity and acceleration, with jerk correlating to errors in novices, differentiating skill levels.
Area of Science:
- Minimally Invasive Surgery (MIS)
- Surgical Robotics
- Surgical Training
Background:
- Analysis of motor performance in minimally invasive surgery (MIS) is emerging for surgical training and robotics.
- Measures of motor performance (MMPs) include force/torque and tool tip position derivatives (velocity, acceleration, jerk).
- Few studies have correlated MMPs with surgical performance in human MIS.
Purpose of the Study:
- To determine the feasibility of a novel multimodal system for quantifying MMPs during laparoscopic cholecystectomy.
- To correlate MMPs with surgical error magnitude in novice versus expert surgeons.
Main Methods:
- Novice and expert surgeons performed laparoscopic cholecystectomies.
- MMPs were captured using optical/electromagnetic tool tip tracking and a force/torque sensor.
- Surgical error scores were calculated using a validated system.
Main Results:
- Error scores were similar between novice and expert surgeons.
- Novice surgeons exhibited significantly higher mean velocity and acceleration than experts.
- A positive correlation was observed between jerk and error score in novice surgeons.
Conclusions:
- Quantifying MMPs in laparoscopic cholecystectomy is feasible.
- MMPs can differentiate between novice and expert surgeons.
- Jerk may correlate positively with error scores in novice surgeons.