Popular Science: I Work, Ergo I Hurt
(Popular Science, February 2003) by Jenny Everett
In this article, Humanscale's Saddle and Freedom chairs are highlighted as innovations that promise to ease pain.
Engage your back fully with your backrest, then adjust the depth of your seat pan to allow for one or two inches of clearance between the back of your knee and the front edge of the seat.
Ergo Gear Guide