kneeling chair?

Howdie All,

Do any of you use a kneeling chair? I'm looking for one that is maximally adjustable (height, angle of seat, angle of knee pads).

Recommendations appreciated.

Once I find one, my plan is to add a few things to it, especially a chest brace.

I currently use a zero gravity chair but I'm wondering if a duly modified kneeling chair might be better.

Thanks.

Here's one that actually has ample adjustments:
www.kneelsit.com/designpics.html

Sookie -- I work at home, writing. I need to be able to sit for 8-12hrs per day. However, I have hip problems that get seriously aggravated in regular chairs; and my scoliosis causes me significant pain when I lean forward (such as when typing, eating, chopping, etc..).

For the past 3 or so years, I've used a zero gravity chair, but I find myself leaning forward often still (to read a quote, to look carefully at the screen, etc).

So, I'm thinking I'll get a kneeling chair and weld on an extra few bars to create a thoracic support.

The above is fairly expensive and would be a hassle to return if it doesn't work for me. I just, though bought the following and once it arrives, I think I'll just adapt it to my needs.
www.amazon.com/Flash-Furniture-WL-3425-GG-Ergonomic-Kneeling/dp/B004GIZ33Q/

Sookie,

I'm sure I won't use the back rest as intended. However, I may very well use its parts to construct a thoracic support.