retraction ring


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retraction ring

A ridge sometimes felt on the uterus above the pubes, marking the line of separation between the upper contractile and lower dilatable segments of the uterus. If the ring is normal, as in a normal delivery, it is called the physiologic retraction ring; if the ring persists, as in prolonged labor, it is called the pathologic retraction ring.
Synonym: Bandl contraction ringBandl ring
See also: ring