I have a rather long update. Please bear with me.
I had an appointment with a hand and arm surgeon this past Monday morning to see what needed to be done for me. She came highly recommended, and had in fact treated my daughter-in-law some while earlier with excellent results.
After the doctor ran some tests, she discussed the situation with me. Put simply, I'm going to need a double, possibly triple procedure done during a single surgery. It turns out I not only have Cubital Tunnel Syndrome with left hand atrophy, but I have Carpal Tunnel Syndrome as well. She's going to release the Carpal Tunnel and the Cubital Tunnel, and she may have to also perform a traverse of the Cubital Tunnel tendon or nerve (not sure which). All in all, my recovery time is going to take 8 to 11 weeks if everything goes well.
There is a downside. The atrophy of my left hand muscles, severe as it is, is permanent. There is no way to regrow the muscles. Not at my age. Put simply, this means I've lost the use of my pinky finger and most of the use of my ring finger, and I've lost considerable strength in my thumb and in the rest of my hand that I'll never get back. Suffice it to say that I'm going to have to figure out another way of playing bass lines on my Arturia Keylab 88. I'm also going to be a bit slower when it comes to doing input on Cakewalk by Bandlab, especially when Control keys are involved.
The surgery is not a waste of time, though. It will keep my hand from getting worse (e.g., it won't develop a claw posture, nor will it lose more muscle). The tingling sensation I have in it 24/7 is supposed to improve as well. For these reasons among others, I'm going through with it.
There is just one small matter that really irks me about the surgery, and that's the surgery date. Wouldn't you know it, they scheduled it for the release date of my fourth album, "Lady Tygress' Suite and Other Commissions," smack dab on November 4th? There's no way I can reschedule it, either. I'll work something out so that the album gets released on time, but good lord, this is an inconvenience!
Oh, well - such is life.