Shoulder Surgery - Again!

Today was round 2 of shoulder surgery.  This time the left shoulder.
It was pretty much the same routine as last time.
Checked in to Baylor Hospital at Uptown at 8 am, in surgery by 10, out around noon.
This time I had a longer chat with the anesthesiologist about the anesthesia.  At first, he said he was not going to do a "block" on my arm, but I requested that it be done.  The "block" is basically the equivalent of an epidural for the arm.  They probe the shoulder to find the nerve using an electrode on a needle - when the hand twitches, they found the nerve.  Then they inject it with lidocaine.
After the surgery, my arm was almost completely numb except for some sensations in the fingers.  It lasted for around 15 hours.  I was still slightly numb when I went to sleep that night.