Shahryar Amiraslani - MSc, Department of Biomedical Engineering, Central Tehran Branch, Islamic Azad University, Tehran, Iran
Farhad Tabatabai Ghomsheh - Pediatric Neurorehabilitation Research Center, University of Social Welfare and Rehabilitation Sciences, Tehran,Iran

Nowadays, washing the surgeon's hand before the surgery with both scrubbing andrubbing methods is highly recommended. Besides, the invention of the surgeon'shandwashing machine can replace the old methods.1 Also, the forces applied to thehuman body are of great importance, which in this study compares the forceapplied to the lumbar vertebrae in the two modes of washing the surgeon's hand inthe previous methods and in the case of using the surgeon's handwashing machineusing The Scale method has been performed. The result of this comparison clearlyshows that the use of a washing machine can be an appropriate alternative toprevious methods and less force is applied to the surgeon's lumbar vertebrae.

Surgical, Handwashing, Hand Scrub, Handwashing Machine, lumbar vertebrae