Objective:To assess the ultrasonic diagnosis of lumbosacral spinal dysraphism(LSD)with tethered spinal cord(TSC)syndrome and to evaluate the ultrasonography value in postoperative follow-up.

• 目的：观察超声在腰骶椎管闭合不全合并脊髓栓系综合征中诊断和术后随访的价值。