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  • 1
    Electronic Resource
    Electronic Resource
    Springer
    Surgical and radiologic anatomy 21 (1999), S. 273-276 
    ISSN: 1279-8517
    Keywords: Pudendal nerve Erection Cavernous nerve Anatomy
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Classically, the peripheral neural pathways for erection are proerectile, issuing from the parasympathetic sacral fibres, and antierectile from the thoracolumbar sympathetic trunk. The cavernous nerves as terminal branches of the pelvic plexus convey the parasympathetic fibres to the penis. The pudendal nerve conveys sensory fibres from the penis and somatic fibres to the bulbospongiosus and ischiocavernosus striated mm. In animals, it has been demonstrated that the dorsal nerve of the penis contains sympathetic fibres. These findings suggest that communicating branches exist between the cavernous nerves and the dorsal nerve. Our aim in this study was to demonstrate the presence of such connections in man. We dissected 20 fresh male cadavers. The pelvic plexus and pudendal nerves were dissected to identify their terminal branches and connections. Histologic study was performed. Our results showed evidence of communicating nervous branches between the cavernous nerves and the dorsal nerve of the penis. Several variants existed concerning the number and type of connections. The presence of such communicating branches proves that the supralevator and infralevator neural pathways communicate and suggest the possibility of a kind of plasticity of the nervous supply of penile erection. Further studies are needed to identify the nature of these communicating branches.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Springer
    Surgical and radiologic anatomy 21 (1999), S. 20-22 
    ISSN: 1279-8517
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Springer
    Surgical and radiologic anatomy 19 (1997), S. 161-167 
    ISSN: 1279-8517
    Keywords: Penis ; Internal pudendal artery ; Impotence ; Prostatectomy
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract The arterial supply to the penis remains unclear. The frequency of occurrence and functional significance of accessory pudendal arteries remains controversial and it has been suggested that the presence of variations is correlated with atheromatous disease involving internal pudendal arteries. We dissected pelvic and penile arteries in 20 adult fresh male cadavers. The results are expressed according to age and the presence of atherosclerosis. Three patterns of penile arterial supply can be described: type I arising exclusively from internal pudendal arteries (3/20), type II arising from both accessory and internal pudendal arteries (14/20) and type III arising exclusively from accessory pudendal arteries (3/20). This study emphasizes the findings previously reported by early anatomists. No correlation between the presence of accessory pudendal arteries and the extent of atheroclerosis was observed. Accordingly we postulate that these variations are usually congenital. Terminal branches of accessory pudendal arteries mainly supply the corpora cavernosa. As they are located very close to the prostate, the risk of injury is high during radical prostatectomy. The possibility of impotence from such injury after radical prostatectomy needs therefore to be reconsidered.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
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  • 4
    Electronic Resource
    Electronic Resource
    Springer
    Surgical and radiologic anatomy 19 (1997), S. 161-167 
    ISSN: 1279-8517
    Keywords: Penis ; Internal pudendal artery ; Impotence ; Prostatectomy
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Résumé L'origine de la vascularisation artérielle du pénis reste aujourd'hui controversée, la fréquence et le rôle fonctionnel des artères pudenales accessoires étant très diversement appréciés selon les auteurs. La présence de ces artères serait, pour certain, liée à l'occlusion athéromateuse des artères pudendales internes. Nous avons disséqué les artères du pelvis et du pénis de 20 cadavres frais de sexe masculin. Les résultats sont exprimés en fonction de l'âge et de l'importance de la maladie athéromateuse. Nous avons distingué trois types de distributions: le type I dans lequel la vascularisation artérielle du pénis est issue exclusivement des artères pudendales internes (3/20), le type II dans lequel les artères pudendales internes et accessoires donnent des branches au pénis (14/20)et le type III dans lequel la vascularisation du pénis est issue des seules artères pudendales accessoires (3/20). Cette étude confirme et précise les données publiées au début du siècle. Aucune corrélation n'a pu être mise en évidence entre la présence de ces artères et l'importance de la maladie athéromateuse. Ainsi, nous avons pu affirmer que ces artères pudendales accessoires sont des variations congénitales de l'origine des artères du pénis ; elles se destinent préférentiellement aux corps caverneux. Leur trajet au contact de la prostate les rend particulièrement vulnérables au cours de la prostatectomie radicale ; leur lésion semble pouvoir être impliquée dans la survenue de troubles de l'érection par insuffisance artérielle après prostatectomie radicale.
    Notes: Summary The arterial supply to the penis remains unclear. The frequency of occurrence and functional significance of accessory pudendal arteries remains controversial and it has been suggested that the presence of variations is correlated with atheromatous disease involving internal pudendal arteries. We dissected pelvic and penile arteries in 20 adult fresh male cadavers. The results are expressed according to age and the presence of atherosclerosis. Three patterns of penile arterial supply can be described: type I arising exclusively from internal pudendal arteries (3/20), type II arising from both accessory and internal pudendal arteries (14/20) and type III arising exclusively from accessory pudendal arteries (3/20). This study emphasizes the findings previously reported by early anatomists. No correlation between the presence of accessory pudendal arteries and the extent of atheroclerosis was observed. Accordingly we postulate that these variations are usually congenital. Terminal branches of accessory pudendal arteries mainly supply the corpora cavernosa. As they are located very close to the prostate, the risk of injury is high during radical prostatectomy. The possibility of impotence from such injury after radical prostatectomy needs therefore to be reconsidered.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 5
    Electronic Resource
    Electronic Resource
    Springer
    Surgical and radiologic anatomy 21 (1999), S. 273-276 
    ISSN: 1279-8517
    Keywords: Pudendal nerve ; Erection ; Cavernous nerve ; Anatomy
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Résumé Classiquement, les voies nerveuses périphériques de l'érection sont pro-érectiles issues des fibres sacrées parasympathiques, et anti-érectiles provenant du tronc sympathique thoraco-lombaire. Les fibres parasympathiques sont acheminées jusqu'au pénis par les nerfs caverneux, branches terminales du plexus hypogastrique inférieur. Le nerf pudendal contient les fibres sensitives provenant du pénis et les fibres somatiques motrices innervant les muscles bulbo-spongieux et ischio-caverneux. Chez l'animal, des fibres sympathiques ont été mises en évidence dans le nerf dorsal du pénis. Ces données suggèrent la présence de communications entre le nerf dorsal du pénis et les nerfs caverneux. Le but de notre travail de dissection était de mettre en évidence ces communications chez l'homme. Nous avons disséqué 20 cadavres non fixés. Les plexus hypogastriques inférieurs et nerfs honteux (pudendaux) ont été disséqués et leurs branches terminales et connexions identifiées. Une étude histologique a été réalisée. Nos résultats montrent qu'il existe des rameaux communicants entre le nerf dorsal du pénis et le nerf caverneux. Il existe également de nombreuses variations de nombre et de type de communications. La présence de telles communications suggère que les voies supra- et infra-lévatoriennes de l'érection communiquent entre elles, ce qui est peut être à l'origine d'une certaine plasticité des voies de l'érection. Il nous reste à identifier la nature de ces communications.
    Notes: Summary Classically, the peripheral neural pathways for erection are proerectile, issuing from the parasympathetic sacral fibres, and antierectile from the thoracolumbar sympathetic trunk. The cavernous nerves as terminal branches of the pelvic plexus convey the parasympathetic fibres to the penis. The pudendal nerve conveys sensory fibres from the penis and somatic fibres to the bulbospongiosus and ischiocavernosus striated mm. In animals, it has been demonstrated that the dorsal nerve of the penis contains sympathetic fibres. These findings suggest that communicating branches exist between the cavernous nerves and the dorsal nerve. Our aim in this study was to demonstrate the presence of such connections in man. We dissected 20 fresh male cadavers. The pelvic plexus and pudendal nerves were dissected to identify their terminal branches and connections. Histologic study was performed. Our results showed evidence of communicating nervous branches between the cavernous nerves and the dorsal nerve of the penis. Several variants existed concerning the number and type of connections. The presence of such communicating branches proves that the supralevator and infralevator neural pathways communicate and suggest the possibility of a kind of plasticity of the nervous supply of penile erection. Further studies are needed to identify the nature of these communicating branches.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
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