So, I started searching for a replacement. My criteria were that the new mouse should be ergonomic, large and wired. I scoured the review sites, shopping sites, the whole shebang.
I couldn't find a single mouse that fits all the criteria. Hence the question.
P.S.
1. I eventually bought a wireless mouse, an ASUS MW203. It is reasonably large and it has helped reduce my pain a lot. But sadly, I couldn't get my hands on it's mythical wired version.
2. It is surprisingly hard to find a large mouse in the sea of compact and portable (read: small) ones.
3. I prefer going wired when it comes to electronics and stuff. They are easy to repair and disengage (you just have to pull the wire). It is just a preference and not a crusade against wireless devices.