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Related Experiment Videos

The relationship between motion analysis and surgical technical assessments.

Vivek Datta1, Avril Chang, Sean Mackay

  • 1Department of Surgical Oncology and Technology, Imperial College School of Medicine at St. Mary's, 10th Floor Queen Elizabeth the Queen Mother Building, St. Mary's Hospital, South Wharf Rd., London W2 1NY, UK. v.datta@ic.ac.uk

American Journal of Surgery
|July 24, 2002
PubMed
Summary

Objective surgical skill assessment using motion analysis (ICSAD) and checklists (OSATS) showed a strong correlation. This validates motion analysis as a reliable tool for measuring surgical technical skill and experience.

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Area of Science:

  • Surgical Education
  • Medical Simulation
  • Biomedical Engineering

Background:

  • Objective assessment of surgical technical skill is crucial for training and evaluation.
  • Current methods include structured checklists and motion analysis of surgeons' movements.
  • The correlation between these assessment techniques requires further investigation.

Purpose of the Study:

  • To determine the correlation between motion analysis and checklist-based assessment of surgical technical skill.
  • To evaluate the utility of the Imperial College Surgical Assessment Device (ICSAD) and the Objective Structured Assessment of Technical Skill (OSATS).

Main Methods:

  • Fifty general surgery subjects across four experience levels performed a standardized laboratory task.
  • Surgical skill was assessed using motion analysis (ICSAD) and the Objective Structured Assessment of Technical Skill (OSATS).

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  • ICSAD measured hand movements and task completion time.

    • Main Results:

    • Motion analysis metrics (movements, time) and OSATS global rating scores significantly differentiated between experience groups (P <0.001, P <0.01).
    • A significant positive correlation was found between the number of movements and the OSATS global rating score (Spearman coefficient 0.53, P <0.01).
    • Checklist scoring alone did not accurately predict surgical experience.

    Conclusions:

    • Hand motion analysis via ICSAD strongly correlates with OSATS global rating assessments.
    • This suggests motion analysis is a valid and objective method for evaluating surgical technical skill.