First of all, it is important to know what an ergonomic mouse is, which different ergonomic mice there are and why you should use them.
Hand, wrist and forearm load
A standard mouse causes an unfavorable hand, wrist and forearm posture. This is because the body is burdened in three ways by using a standard mouse:
- Pronation: Turning the wrist in from the forearm
- Wrist extension: Stretching the wrist
- Ulnar and radial deviation: Bend sideways from the wrist
Prolonged use of the mouse can lead to pain and discomfort in the shoulders, forearms and hands (Chang et al., 2007; Andersen et al., 2008). An ergonomic mouse can partially counteract these effects and leads to more comfort.