[Enthetic reactions of the hand in progressive scleroderma].

Frequent bone changes in progressive systemic sclerosis are the marginal osteolysis, the arthritic erosions and also the reactions at the numerous entheses of the hand, where the resorptive reactions predominate the osteoproliferative ones. The most frequent resorptions occur at the proximal corners of the tufts. At the margin of the tufts there are also enthesitic reactions, but they do not mark the beginning of an acroosteolysis.