The last Rock I think had a report on a study showing no correlation between arthritis and climbing. Usually they say activity is good for arthritis, and injury is bad. Where climbing lies who knows. Though injury is given as things like broken bones. There are other causes of lumps on the fingers. I had a large lump on a forefinger joint. I borrowed a medical encyclopedia and hit the lump with it, very hard. It went away completely. Who says medical knowledge isn’t useful.
