The proposed study is based on the hypothesis that pain in hand osteoarthritis is due to local changes in the joint and the switching on of pain pathways in the brain that mediate chronic pain. The overall aim of this study is to determine whether drugs which influence central brain pain processing pathways can improve pain management in hand osteoarthritis. The primary objective of this study is to determine the effects of centrally acting drugs duloxetine and pregabalin versus placebo on pain perception in hand osteoarthritis using clinical pain scores.