Neurourological studies were performed on 37 patients with cervical spondylotic myelopathy. Micturitional history revealed that 30 patients (81%) had voiding symptoms: obstructive in 14, irritative in 5, and both symptoms in 11. Urodynamic studies revealed that 9 of 20 had abnormal uroflowmetrogram, 17 of 37 had residual urine, 14 of 37 had detrusor hyperreflexia, and 6 of 37 had detrusor-sphincter dyssynergia. There were no statistical differences in lower extremity neurological signs in patients with or without residual urine.