Do amniotic sac disorders cause birth defects?

Amniotic Fluid. Best discussed with your ob. Too much or too little amniotic fluid is associated with abnormalities in development and pregnancy complications. Differences in the amount of fluid may be the cause or the result of the problem.
Yes. There is a very rare condition called amniotic band syndrome that occurs when the baby's body (usually limbs or digits) becomes trapped in fibrous bands of the amniotic sac. This causes constriction around the trapped body part and decreases blood flow. This process can lead to birth defects.