Is the PT helping? Sometimes when I get home after it, I feel relaxed and really good. Today, I'm feeling achy and tight in my back and hand. So, the definitive answer is: it varies.
The exercises they give me for "homework" do give me a sense of working to help myself, and I guess over the long haul it will have been worth it. I know now I can drive in the car without feeling like my right arm is going to drop off, and sitting watching movies doesn't require my getting into some ridiculous looking contortions in order to minimize pain.
Progress is happening, but it's slow, slow, slow.