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An ergonomic analysis of the effects of camera rotation on laparoscopic performance

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Abstract

Background

Minimal access surgery is associated with increased risk of complications, particularly early in a surgeon’s laparoscopic career. This is mostly due to loss of depth cues, degraded tactile feedback from surgical instrument, and the “fulcrum effect”. Degraded and restricted image on the monitor makes camera orientation very important. The objective of this study is to investigate the effects of camera rotation on laparoscopic performance.

Methods

In two separate studies 100 laparoscopic novices and 7 experienced laparoscopic surgeons (> 300 laparoscopic procedures) were asked to perform a simple laparoscopic cutting task and tie intracorporeal square-knots (respectively) under 0°, 15°, 45°, 90°, and 180° camera rotation.

Results

In study 1 camera rotation significantly degraded performance of laparoscopic novices (p < 0.00001) and also increased their error rate (p < 0.00001). In study 2 camera rotation significantly increased the length of time it took surgeons to tie an intracorporeal square-knot (p < 0.00001) and the number of errors made (p < 0.0001).

Conclusions

Unintentional camera rotation during surgery should be avoided to eliminate one potential source for errors.

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Acknowledgements

The authors wish to thank N. Gabriel and J. C. Rosser Jr. for their contribution and support during the second study reported here.

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Authors and Affiliations

  1. National Surgical Training Centre, Royal College of Surgeons in Ireland, 123, St. Stephens Green, Dublin, 2, Ireland

    Anthony G. Gallagher & Musallam Al-Akash

  2. Department of Surgery, Baystate Medical Center/Tufts University School of Medicine, 759 Chestnut Street, Springfield, MA, 01199, USA

    Neal E. Seymour

  3. Department of Surgery, University of Washington, Box 356410, BB430, 1959 N.E. Pacific St., Seattle, WA, 98195-6410, USA

    Richard M. Satava

Authors
  1. Anthony G. Gallagher
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  2. Musallam Al-Akash
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  3. Neal E. Seymour
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  4. Richard M. Satava
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Correspondence to Musallam Al-Akash.

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Gallagher, A.G., Al-Akash, M., Seymour, N.E. et al. An ergonomic analysis of the effects of camera rotation on laparoscopic performance. Surg Endosc 23, 2684–2691 (2009). https://doi.org/10.1007/s00464-008-0261-x

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  • DOI: https://doi.org/10.1007/s00464-008-0261-x

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