To investigate the effect of myelodysplasia and hemirachischisis on urological system, urodynamic studies were undertaken in 34 patients with myelodysplasia and hemirachischisis presenting with urological symptoms. 为了解脊髓发育不良和隐性骶椎裂对泌尿系统的影响,对34例有泌尿系统症状的患者行尿动力学检查和辅助检查。