Yowtch. That sounds amazingly painful and amazingly annoying for you...so sorry you're going through it!
Hmmm. What about Norwegian? I don't know much about it, but it looks something like what you might need...I think there's various videos on YouTube on it. The purl looks like it might work for you, as the entire left hand stays behind the needles with the yarn...
OTN: Eyelet Chemise in Handmaiden Sea Silk (colorway: Midnight). Still. And a purple Donegal Tweed set of fingerless mitts, to try out my new Hiya Hiya interchangeable needles.
Latest FO: A shrug for an Anthropologie swap in beautiful Casbah sock yarn, in Cedar, a dark green semi-solid, my own pattern. Also a quick Noro Silk Garden neckwarmer for my friend Aideen, in a vine lace pattern.
My knitting blog, Another Long Yarn