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Detrusor overactivity and penile erection in patients with lower lumbar spine lesions
T Yamanishi1, K Yasuda, R Sakakibara
1Department of Urology, Chiba University, School of Medicine, Chiba City, Chiba.
Objectives:
To investigate urodynamically detrusor overactivity and evaluate surgical outcome in patients with lower lumbar spine lesions.
Methods:
Eighty patients with spine lesions below the third lumbar spine including 31 patients with intervertebral disc prolapse (IDP) (mean age: 38.2 years) and 49 patients with spinal canal stenosis (SCS) (mean age: 56.7 years) were studied. Urinary symptoms and urodynamic data were recorded before and after orthopedic surgery.
Results:
Detrusor overactivity was noted in 17 patients: 3 IDP patients (10%) and 14 SCS patients (29%). Of these 17 patients (9 males and 8 females), 14 (82%) had voiding symptoms and 15 (88%) had storage symptoms. One patient was asymptomatic. Intermittent claudication was noted in 14 patients: 8 had urgency, 11 urge incontinence and 4 male patients showed erection on walking. Of 10 patients followed up after surgery, detrusor overactivity disappeared in 5 patients, improved in 1 patient and remained unchanged in 4 patients.
Conclusions:
Detrusor overactivity was found in lower lumbar spine lesions. This phenomenon seemed to be caused by the irritation of sacral roots, especially on walking.