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Amniotic constriction bands
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| Amniotic constriction bands |
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Definition:
Amniotic constriction bands are a congenital (present from birth) deformity of the limbs (arms or legs) or digits (fingers or toes) caused by a type of damage to the placenta which cuts off their blood supply and prevents normal development. Alternative Names:
Pseudo-ainhum; Streeter's dysplasia Text Continues Below
Causes, incidence, and risk factors:
Damage to the amnion (part of the placenta) may produce fibrous bands that can entrap the limbs of the fetus. These bands compress the area of the limb over which they run, reducing blood supply and causing the limb to develop abnormally. This is a relatively rare disease.
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