The investigators have unravelled the cellular process that initiates and maintains the disease progress and identified tumour necrosis factor (TNF) as a new target for treatment. Based on these findings the investigators plan to test the effects of adalimumab, an anti-TNF drug which currently approved for use in patients with rheumatoid arthritis and other inflammatory conditions. The aim of the study is to find out whether treatment by injection with adalimumab directly into the diseased tissue will control the advance of early Dupuytren's disease better than a placebo injection with normal saline.