I have rather severe arthritis in my hands, esp in my fingers where the joints have fused.
I don't sew for great lengths of time but rotate the varying tasks of cutting, pressing, sewing, and exercising. I bought a Pfaff because of the dual feed [IDT] so I don't have to strain when sewing.
I tested all the various rotary cutters til I found which ones fit me and how I use them. I bought the Alto's Quick Cut 2 for assistance with cutting. I made sure my cutting area is the right height for me. Then I bought a great "chair' for me to sew in, actually it isn't a chair but a Swopper, it feels like sitting on a balance ball only I don't have to worry about pins bursting it.
I take my meds and see my rheumatologist.
ali