"In addition, it is believed that erectile tissue requires oxygenation to
maintain its integrity, which can be significantly affected if the arteries
irrigating the cavernous bodies are damaged intraoperatively, such as the
accessory pudendal arteries."
accessory pudendal arteries, the researchers say further study is needed. "The
crux of the difficulty," they say, "is deciding which arteries should be
preserved and which may be sacrified."