It's psoriatic arthritis which is different from the typical osteoarthritis. With the right medication you can stop it but I went a long time without medication due to lack of insurance. Due to that I have some permanent damage in my fingers.
If you still have issues, I highly recommend seeing an Occupational Therapist. The common button hook handle is larger where you can use a gross grasp (whole fist) and is easier on the finger joints
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u/I_Suck_At_This_Too 5d ago
When the arthritis in my hands was so bad this would have been really useful. Couldn't even button my shirt.