ABSTRACT
We studied the voluntary contractile activity of the ischiocavernosus muscle (ICM) in 21 sexually potent and 97 erectile dysfunction (ED) subjects using a spring balance. A strap was placed around the coronal grove of the glans penis and tensioned with the spring balance. Subjects were asked and encouraged to contract the ICM against the spring balance. We evaluated the length of stroke, duration of contraction, and maximum contractile force. The length of stroke, duration of contraction, and maximum contractile force showed statistically significant differences between potent and ED subjects. Diagnosed psychogenic ED and arteriogenic ED showed higher contractile activity than cavernous ED and neurogenic ED. Our results corresponded to those of previous studies that have urged consideration of the role of the ICM during the process of erection in animal experiments and in human electrophysiological studies. The spring balance evaluation is a useful, inexpensive method for evaluating the ICM.
Subject(s)
Erectile Dysfunction/diagnosis , Erectile Dysfunction/physiopathology , Muscle Contraction , Muscles/physiopathology , Penile Erection , Penis/physiopathology , Urology/instrumentation , Adolescent , Adult , Aged , Aged, 80 and over , Equipment Design , Humans , Impotence, Vasculogenic/diagnosis , Male , Middle Aged , Psychophysiologic Disorders/diagnosis , Reference Values , Time FactorsABSTRACT
BACKGROUND: It is well known that the effectiveness of venous surgery declines during the follow-up period. The onset of recurrence after surgery varies greatly among patients. There are only a few studies which have evaluated the effectiveness of venous surgery with objective tests. METHODS: We treated 123 cases of cavernous erectile dysfunction with venous surgery, and evaluated the results objectively. We performed intracavernous injection tests using 20 micrograms of prostaglandin E1 every 3 months until the recurrence of cavernous erectile dysfunction. RESULTS: Mean follow up period was 32 months (0.2-134.0 months). According to the Kaplan-Meier analysis, the effectiveness of surgery at 1 year, 3 years, 5 years, and 10 years was 85%, 61%, 30%, and 26%, respectively. CONCLUSION: There was no statistically significant difference between the outcomes following deep dorsal vein surgery and crural ligation surgery. Operative complications were more frequent, however in deep dorsal vein surgery.
