With increasing age, 60+, I have found the amount of backward sweep in my handlebars alters any shoulder/back pain. I now need 20° or more backward sweep to achieve comfort in the shoulders/back.
I also now ride with Ergon GP1 handlebar grips, the ones with a flat platform at the rear to spread the load on your hands.
I had my good bike stolen earlier in the year as I rode to a cycling rally. I had to use my old bike for the rally and surprised to find that I was in real hand pain using the old tubular rubber handlebar grips.
It may be worth trying some different shape or width of handlebars, plus some Ergon grips.
Last edited by julk; 10-09-10 at 01:13 PM.
Reason: forgot to put Ergon grips in first posting