Carpal tunnel is a nerve problem. It’s a place in the wrist were a nerve has to go through a tight space – a tunnel. It has friends in there. Those friends in there are the tendons. The tunnel is made up of a half-pipe (as it were) of bone on the bottom, and then a ligament over the top. Typically as we age, the bones get thicker, the ligaments get thicker and our nerve and its friends (the tendons) get tight in there. That ends up with the symptoms of carpal tunnel.