fig2

Figure 2. (a) Peripheral arthritis is an early stage of bone response to synovitis. In the DRUJ, it typically begins along the proximal joint where synovium attaches. It has the appearance of a "goatee" on the articular surface of the ulna as noted in these 4 symptomatic patients; (b) at surgery, the osteophyte is made up of soft reactive bone, which is easily removed circumferentially; (c) a 5-year postoperation follow-up shows no progression of DRUJ arthritis in this asymptomatic patient