A poorly fitting chair, an improperly adjusted chair, or poor sitting posture can force your back muscles to work harder than is necessary and over an extended period of time.
Experience pain in hips, legs and knees while sitting.
In many situations, pain is caused by a chair seat not being raised high enough or the depth of the seat pan set too short. If you have an adjustable ergonomic chair, raise the height of the seat pan so that the hips and knees are set at right angles, legs dropping straight with feet placed comfortably onto the floor. You may need a footrest to accomplish this. (See our Footrest Section).
The front edge of the seat pan should be approximately 2 inches behind the back of the knee to provide adequate support for the hip, leg and even the lower back.
Chair does not provide enough back support
In other situations, pain can be caused by the seat pan being raised too high and/or the seat pan set too deep. If the chair is adjustable, make adjustments as noted above. If a properly fitting ergonomic chair is not available purchase an appropriate chair and adjust. (Click onto our Chair Department)
Practice sitting back in chair (rather than leaning forward in chair) and allow the full chair back to support entire back. Utilize back cushion to provide sufficient back support in lower back region. (See our Backrest and Seat Cushion Section) Utilize footrest to provide sitting stability and keep lower back region
Do not have a properly fitting chair.
If a properly fitting ergonomic chair is available at worksite, obtain it for your use. If not, purchase properly fitting ergonomic chair to allow for appropriate support in back and all areas of body. (See our Chair Section)