Treatment of severely comminuted unstable intra-articular finger fract
ures has three goals: reconstruction of the articular surfaces, preven
tion of redislocation of those surfaces, and proper healing of the cap
suloligamentous apparatus. Dynamic circle traction (DCT), as described
by Schenck (1 986), is based on these principles and is the first met
hod of treatment combining traction with intermittent or continuous pa
ssive motion. In order to improve on this method we applied continuous
, instead of intermittent, passive motion in a newly developed DCT-dev
ice (continuous dynamic circle-traction = CDCT). Its first clinical us
e is discussed below. Our results with DCT, in eight patients, and CDC
T, in four patients, are encouraging. Full function was regained at fo
llow-up, in both groups, in three-quarters of the metacarpophalangeal
(MCP) and half of the proximal interphalangeal (PIP)joints involved. A
verage loss of range of motion of the other MCP and PIP joints was 3.7
-degrees and 5.6-degrees respectively. Treatment with CDCT may yield b
etter results than DCT, the small number of patients treated and the r
elatively short period of follow-up does not justify comparison of bot
h methods.