The Journal of Bone and Joint Surgery, Vol 57, Issue 5 636-643, Copyright © 1975 by Journal of Bone and Joint Surgery, Inc
Clinical and experimental studies of the congenital constriction band syndrome, with an emphasis on its etiology
Y Kino
The findings in fifty-nine patients with congenital constriction band
syndrome and in experiments in which limb malformations resembling those of
the human constriction band syndrome were successfully reproduced in rat
fetuses by amniocentesis indicated that these malformations arise from
excessive contraction of the uterine muscle during pregnancy, with
resulting hemorrhages from the marginal blood sinuses of the digital rays.
Such malformations in humans may arise during the fifth and sixth weeks
counted from ovulation. It therefore was concluded that this syndrome is
not hereditary but is produced by prenatal environmental factors.