My pain level has significantly decreased since I left my job. Yours is the first question I've had about not using computers. And not using your arms more than necessary. The most obvious accommodation is a combination of speech recognition technology, ergonomic arm supports, use of foot pedals on a mouse and motorized carts to move heavy materials. So if you did legal research for a lawyer and stuck to legalese, the results would be fairly acceptable with some clean-up of text.
Programs are on the way to voice control word processing.
Perhaps you could even get a job testing the upcoming software packages. JAN has a collection of case solutions and information involving CTS and other types of cumulative trauma disorders. The data is free upon request. A receptionist who needs to input data into a computer and lost the ability to move her right hand was accommodated with a left-handed keyboard designed to eliminate strenuous reaches. Keep researching until you find several occupations you like.