Objective To observe the value of prenatal ultrasound measuring fetal cauda equina nerve parameters for diagnosing tethered cord syndrome(TCS).Methods Forty six fetuses with TCS(TCS group)and 591 healthy fetuses(control group)were retrospectively enrolled.The length,area and angle of cauda equina nerve were measured with prenatal ultrasound and compared between groups,and the value for diagnosing TCS was analyzed.Results Significant differences of the length,area and angle of fetal cauda equina nerve were found between groups(all P＜0.05),with the area under the curve for diagnosing TCS of 0.924,0.809 and 0.972,respectively.Conclusion Prenatal ultrasound measuring fetal cauda equina nerve parameters had high value for diagnosing TCS.
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