Abid Ali Khan - Ergonomics Laboratory, Department of Mechanical Engineering, Aligarh Muslim University, Aligarh, INDIA
Faisal Anwar - E M & R BG, Voltas Limited, No ۶۲۴, Anna Salai, Teynampet, Chennai, INDIA
Tauseef Ahmad - Alstom Projects India Ltd., Chaadi Waala Estate, Maa Anand Mai Marg, Kalkaji, New Delhi, INDIA
Javed Islam - Alstom Projects India Ltd., Chaadi Waala Estate, Maa Anand Mai Marg, Kalkaji, New Delhi, INDIA

The use of conventional straight handle file provides the ulnar deviation in the wrist that may lead to MSD for the frequent and regular use of file. Therefore, the primary objective of the present study was to redesign ergonomically the handle of the file to reduce the risk of WMSD. The bent handle was designed to reduce the bent of wrist at the cost of bending the handle of file. Further in this study, experimental simulation was conducted to investigate the effect of repetitive use of file on human performance in terms of discomfort and fatigue. The results of experimental simulation also showed that the 450 downward bend in the file handle was best for low level of discomfort in the wrist and forearm system.