The Kinesis classic is the keyboard that saved my career.
My wrist pain actually increased slightly when I first got it, due to the strain of having to interrupt my years-old muscle memory. It took several days for the thumb keys to become (somewhat) automatic. Within a couple of weeks, I was on my way to pain-free computing. It's now been over a decade, and I consider the Kinesis keyboard to be the primary factor in my recovery.
My wrist pain actually increased slightly when I first got it, due to the strain of having to interrupt my years-old muscle memory. It took several days for the thumb keys to become (somewhat) automatic. Within a couple of weeks, I was on my way to pain-free computing. It's now been over a decade, and I consider the Kinesis keyboard to be the primary factor in my recovery.