Document Detail

LapSim virtual reality laparoscopic simulator reflects clinical experience in German surgeons.
MedLine Citation:
PMID:  16052369     Owner:  NLM     Status:  MEDLINE    
BACKGROUND AND AIMS: The aim of this study was to analyze the ability of a training module on a virtual laparoscopic simulator to assess surgical experience in laparoscopy. METHODS: One hundred and fifteen participants at the 120th annual convent of the German surgical society took part in this study. All participants were stratified into two groups, one with laparoscopic experience of less than 50 operations (group 1, n=61) and one with laparoscopic experience of more than 50 laparoscopic operations (group 2, n=54). All subjects completed a laparoscopic training module consisting of five different exercises for navigation, coordination, grasping, cutting and clipping. The time to perform each task was measured, as were the path lengths of the instruments and their respective angles representing the economy of the movements. Results between groups were compared using chi(2) or Mann-Whitney U-test. RESULTS: Group 1 needed more time for completion of the exercises (median 424 s, range 99-1,376 s) than group 2 (median 315 s, range 168-625 s) (P<0.01). Instrument movements were less economic in group 1 with larger angular pathways, e.g. in the cutting exercise (median 352 degrees , range 104-1,628 degrees vs median 204 degrees , range 107-444 degrees , P<0.01), and longer path lengths (each instrument P<0.05). CONCLUSION: As time for completion of exercises, instrument path lengths and angular paths are indicators of clinical experience, it can be concluded that laparoscopic skills acquired in the operating room transfer into virtual reality. A laparoscopic simulator can serve as an instrument for the assessment of experience in laparoscopic surgery.
C Langelotz; M Kilian; C Paul; W Schwenk
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't     Date:  2005-07-29
Journal Detail:
Title:  Langenbeck's archives of surgery / Deutsche Gesellschaft für Chirurgie     Volume:  390     ISSN:  1435-2443     ISO Abbreviation:  Langenbecks Arch Surg     Publication Date:  2005 Nov 
Date Detail:
Created Date:  2005-11-11     Completed Date:  2006-06-23     Revised Date:  2008-11-21    
Medline Journal Info:
Nlm Unique ID:  9808285     Medline TA:  Langenbecks Arch Surg     Country:  Germany    
Other Details:
Languages:  eng     Pagination:  534-7     Citation Subset:  IM    
Department of General, Visceral, Vascular and Thoracic Surgery, Universitätsmedizin Berlin-Charité, Campus Mitte, Schumannstrasse 20/21, 10117 Berlin, Germany.
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MeSH Terms
Chi-Square Distribution
Clinical Competence
Computer Simulation*
Education, Medical, Graduate
General Surgery / education*
Statistics, Nonparametric
User-Computer Interface*

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