I have been riding a road bike for about a couple of months (35-100km rides) and been having a bit of numbness in my pinkies/ring fingers. I have also been having some pain in my elbows. After a bit of research I think it is to do with riding with my elbows too straight. I find it tends to over stress the tendons along the inside of my lower arm near the elbow and affect the funny bone nerve that passes throught the elbow. There has been slight pain in the joint if I straighten and lock out my elbow. I now make sure I keep my elbows bent when riding and avoid putting too much weight on the handlebars. This is getting easier as my core strenght improves. Hope it helps.