Document Detail

Extent of innate dexterity and ambidexterity across handedness and gender: Implications for training in laparoscopic surgery.
MedLine Citation:
PMID:  17965919     Owner:  NLM     Status:  MEDLINE    
BACKGROUND: As innate dexterity is considered one of the important predictors of eventual operative competence, an experimental human factors study was conducted to determine innate dexterity and ambidexterity across handedness and gender. METHODS: 50 medical students (right-handed males, left-handed males, and right-handed females) were recruited as participants in a study designed to assess innate dexterity and degree of ambidexterity for endoscopic manipulations in a validated virtual-reality simulator. All participants performed unilateral and bilateral tasks with both dominant and nondominant hands in random sequence. The outcome measures were execution time, extent of ambidexterity (ambidexterity index), aiming errors, and maximum tissue damage. RESULTS: Right-handed males exhibited a greater level of ambidexterity than left-handed males (p = 0.02 for path length, p = 0.001 for angular path) and right-handed females (p = 0.01 for path length, p = 0.02 for angular path), and more-efficient task performance as measured by execution time (p = 0.001 for males and p = 0.03 across gender). The task quality when executed by the dominant hand was best in right-handed males (p = 0.001 vs. left-dominant males and p = 0.03 across gender). No significant difference was observed in terms of precision control and fine movements (aiming errors and maximum tissue damage) between the three groups. CONCLUSIONS: These findings indicate that training surgical curricula in laparoscopic surgery should be more flexible to accommodate the innate differences across handedness and gender.
F H F Elneel; F Carter; B Tang; A Cuschieri
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Publication Detail:
Type:  Journal Article     Date:  2007-10-27
Journal Detail:
Title:  Surgical endoscopy     Volume:  22     ISSN:  1432-2218     ISO Abbreviation:  Surg Endosc     Publication Date:  2008 Jan 
Date Detail:
Created Date:  2007-12-31     Completed Date:  2008-01-28     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  8806653     Medline TA:  Surg Endosc     Country:  Germany    
Other Details:
Languages:  eng     Pagination:  31-7     Citation Subset:  IM    
Cuschieri Skills Centre, University of Dundee, Scotland, Italy.
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MeSH Terms
Clinical Competence*
Cohort Studies
Education, Medical, Undergraduate / methods
Functional Laterality / physiology*
Sex Factors
Statistics, Nonparametric
Students, Medical
Surgical Procedures, Minimally Invasive / education*
Task Performance and Analysis

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