I'm on vacation and trying to ride daily to work out this sit bone issue. Today I rode 8+ miles around the neighborhood streets. On our previous rides I noticed some numbness in my hands, particularly my right one since it doesn't wear a brace like the other one, but not a lot and I shook it off. This morning, the numbness got so bad I couldn't feel the trigger shifter under my thumb. It helped to let my arm hang down briefly and shake my hand, but I had to do that much more frequently this morning.
I am trying to make sure I hold my hands in a neutral position. I'm not putting all my weight on the bars, I just try to rest them and try to distribute my weight between my hands, legs, and seat (trying is the operative word..... I'm still learning) all the while trying to keep my sit bones happy.
I'm considering getting a brace for my right hand also. The one I wear on my left hand has a metal bar that slides into a sleeve on top of the brace, preventing my hand from hyper-extending (this protects the prosthetic lunate in my wrist, should I fall and land on my left hand). I believe the bar in the brace does help to keep the left hand more neutral than the right. Both of my wrists are bad, I never could extend my hands back past 45 degrees. The range of motion has never been good and there are subtle anomalies in my wrist anatomy that contribute to this.
I'm wondering why this was so much worse today --- I almost headed back home sooner than usual just because of this --- and what I can do about it while I am riding. What else can I do to prevent and alleviate this? Is it one more thing to work out with practice and experience? If it can get this bad in a semi-upright position a hybrid, then I can only imagine what I'd feel on a road bike...... and this problem is exactly why I chose a bike with an upright riding position in the first place. Maybe the top tube is too long??? I don't think I am leaning too far forward, and I don't feel any trouble at all trying to reach the bars.