Microgravity Effects on Fine Motor Skills: Tying Surgical Knots During Parabolic Flight
Authors: Rafiq, Azhar; Hummel, Russ; Lavrentyev, Vladimir; Derry, William; Williams, David; Merrell, Ronald C.
Source: Aviation, Space, and Environmental Medicine, Volume 77, Number 8, August 2006 , pp. 852-856(5)
Publisher: Aerospace Medical Association
Abstract:Rafiq A, Hummel R, Lavrentyev V, Derry W, Williams D, Merrell RC. Microgravity effects on fine motor skills: tying surgical knots during parabolic flight. Aviat Space Environ Med 2006; 77:852–856.
Introduction: The health provider on a space exploration mission cannot evacuate a patient to Earth. Contingency plans for medical intervention must be designed for autonomy. This study measured the effect of microgravity on performance of fine motor skills such as basic surgical tasks. Methods: Eight subjects, six with medical and two with non-medical backgrounds, were evaluated during parabolic microgravity flights aboard NASA’s KC-135. We evaluated their skill in tying surgical knots on simulated skin made of silicone using standard techniques for minimally invasive surgery. LabView® software was developed to archive forces applied to the laparoscopic tool handles during knot-tying. Studies were controlled for medication (ScopeDex) and the aircraft environment. Results: All participants completed the tests successfully. The data indicated that increased force was applied to the instruments and knot quality decreased during flight compared with ground control sessions. Conclusion: Specific metrics of surgical task performance are essential in developing education modules for providers of medical care during exploration-class missions.
Document Type: Short Communication
Publication date: August 1, 2006
- The peer-reviewed monthly journal, Aviation, Space, and Environmental Medicine (ASEM) provides contact with physicians, life scientists, bioengineers, and medical specialists working in both basic medical research and in its clinical applications. It is the most used and cited journal in its field. ASEM is distributed to more than 80 nations.
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