I have had tingleing and numbness in my index and middle finger and thumb for a long time. Also included in this is mid lower arm pain, elbow and shoulder pain. I can reproduce the tingling by applying pressure to the wrist, inside of the lower arm just below the elbow and the front of the shoulder just above the arm pit. Any suggestions would be appreciated. Also I just had surgery to pin and fuse the mid thumb joint. I was in a cast for 6 weeks and a splint for four weeks.
Numbness and tingling in the area you describe is from compression of the median nerve. The most common place for this to be compressed is at the base of the palm, within the carpal tunnel.
But, applying pressure to the nerve anywhere along its course, will cause the same symptoms. You are basically compressing the nerve in different locations as it travels from the brachial plexus in the neck, down through the arm, forearm, and then into the hand.
If you are developing persistent symptoms, without actually compressing the nerve yourself, you might want to see a hand surgeon for an evaluation and possibly some electrical nerve testing.