Sounds like some site participants also have to limit computer time due to sitting pain. I often will lay in bed, read emails, make a few notes, and then can sit at computer to respond quickly. I have a Toshiba small laptop/large notebook which I can use in bed. Also bought a small folding table tray which can swing over bed or reclining chair to support electronic device. Often will just acknowledge email saying will respond later. Hope this is helpful, but I also know that your pain might be so severe that no suggestions help. In which case, please accept my heartfelt concern.