Ooh - let's get creative - wrap the arm in a pillow, place a long wooden spoon on the outside, and wrap in a long bandage? No bandages - how about a dish towel, or strips of fabric cut from a t-shirt. Anything to gently keep it straight.
Let me know if you figure something out.
Sue

@lotsofpain

I am from the “Deep South” and used what is often referred to as “redneck ingenuity”. I actually took an old pillow and had my husband (that is the ingenuity.. the damsel in distress batting eyes and irresistible smile at my Prince 😁) .. cut it and the polyester stuffing the length and width to fit around my arm. Instead of seaming together he used duct tape. My Prince wrapped the pillowing around my arm with an Ace bandage to hold it in place.. duct tape at end to hold Ace bandage i place. It worked until I got my splint.

Being I was having shoulder surgery I opted to have the ulnar surgery at same time. When I did not want to wear the brace while sitting and watching tv in my recliner.. I had an oversized recliner at time.. I stacked two standard pillows under my arm. In bed you might need more pillows. I actually slept in my recliner back then.. it was too painful for my shoulder in bed.

ZeeGee