Keyboard and Mouse

In order to avoid dorsiflexion, arms should be positioned at a 90º angle when typing or mousing. Therefore, the keyboard and mouse should be placed just above the level of the lap, or lower. The kickstand under the keyboard should be down so the keyboard is lying flat or slightly declined.

• The work surface may need to be raised or lowered to keep the operator's arms in a comfortable position. This can be achieved by installing an adjustable keyboard extender or tray by providing an adjustable table/working surface, or by raising the chair and providing a footrest if needed.

• A keyboard or mouse that is not directly in front of or close to the body forces the employee to repeatedly reach during use.

• The mouse should be positioned at the operator's side with his or her arm close to the body. A straight line should be maintained between the hand and the forearm. The upper arm should not be elevated or extended while using the mouse.
  o Make sure the keyboard is placed directly in front of the user.
  

• Consider using a mouse platform that rotates above the keyboard while maintaining about the same plane. This design allows the mouse to be used above the 10-key pad, which gives the user a better wrist angle and reduces reach.

According to NIOSH, research does not provide conclusive evidence that keyboards reduce the risk of injury or discomfort. For more information about alternative keyboards, you may click on the following link:

Alternative Keyboards