Abstract: Objective To explore the videourodynamic manifestation of neurogenic bladder after operation for lumbar intervertebral disk hernia. Methods A consecutive series of 25 patients with neurogenic bladder dysfunction after operation for lumbar intervertebral disk hernia were analysed retrospectively. They were respectively divided into L₄-₅ and L₅-S₁ groups according to the focus, or normal, injured and no-drawn groups according to saddle sensation. Their videourodynamic manifestation were analyzed statistically. Results Videourodynamic manifestation including bladder sensation,bladder compliance, stability, bladder neck's opening extent, bladder capacity and urethral pressures were not significantly different between the group L₄-₅ and L₅-S₁ (P>0.05), nor was the saddle sensation (P=0.51). But the bladder sensation and urethral pressures were related with the saddle sensation (P<0.05). Conclusion The videourodynamic changes may not be related with the focus, but the saddle sensation in patients after operation for lumbar intervertebral disk hernia, which need further elucidation.

Key words: lumbar intervertebral disk hernia, neruogenic bladder, videourodynamics