Hand and palm dermatoglyphics were studied in 158 insulin-dependent di
abetic children and adolescents [85 with limited joint mobility (LJM)
and 73 without]. The findings in this group were compared with those i
n 400 control subjects, with a similar racial distribution. The main d
ermatoglyphics alterations found in diabetic patients with LJM, as com
pared with non-LJM diabetic patients and controls, may be summarized a
s follows: (a) decrease in digital total ridges count (TRC); (b) highe
r frequency in the number of arches; (c) decrease in the sum of a line
and cubital loops, particularly in the women; (d) increase in the num
ber of t'-axial triradii. These alterations suggest a genetic aetiolog
y of this complication. Further studies are recommended in order to pr
ovide more insight into the origin of this disorder.