A man was left in agony after fracturing his penis during sex . The 42-year-old had to undergo emergency surgery after snapping a fibrous membrane inside the organ . His erect phallus had inadvertently collided with his partner ’ s perineum , the area in front of the anus . The man heard a snap , felt his penis become immediately flaccid , and noticed a rush of blood from the tip . He was rushed to the A & E department of a Boston hospital as he was suffering severe pain , according to a case report in the New England Journal of Medicine . A 42-year-old man rushed to hospital after fracturing his penis during sex . After accidentally hitting his erect penis on his partner 's perineum , he heard a loud snap , saw a spurt of blood and felt searing pain ( file picture ) Doctors found he had torn his tunica albuginea , the watertight and fibrous outer sheath of one of the penis ' inner chambers , the corpus cavernosa . The corpus cavernosa runs along the length of the penis and is filled with spongy tissue , into which blood flows to create an erection . The tunica albuginea helps to trap the blood in the corpus cavernosa , maintaining an erection . Picture shows a cross section of a penis . The tunica albuginea is the white membrane of the large red chamber , called the corpus cavernosa , in the centre . The tunica albuginea is the watertight outer sheath of one of the penis ' inner chambers , the corpus cavernosa . The corpus cavernosa runs along the length of the penis and is filled with spongy tissue , into which blood flows to create an erection . The tunica albuginea helps to trap the blood in the corpus cavernosa , maintaining an erection . It is a whitish and fibrous membrane . The snap had led to a tear in the corpus cavernosa ’ s sheath , which meant blood leaked out , creating swelling . It was forced out of his body through the urethra , the tube by which a man passes urine , which is why he saw blood coming out of the end of his penis . When he arrived at hospital , he was taken straight to the operating room for emergency repair . Doctors said the consequences of such a fracture include erectile dysfunction , as scar tissue known as fibrous plaques can form in the penis , meaning . They warned it is also possible to suffer a curve or bend in the penis , and damage to the nerves in the genitals . Fortunately , the man , who was seen three and six months after surgery , regained his ability to obtain an erection - without any noticeable curvature or plaque forming in his penis . The news comes after MailOnline reported on the story of Edward Stalling , who endured a painful erection for several weeks . He has suffered a rare side effect to a sleeping tablet given to him in hospital . Mr Stalling was hospitalised for 10 days as doctors treated his prolonged erection . He developed fibrosis – where the arteries and muscles in the penis becoming hardened with fibrous tissue – as a result of the continued erection . He claims this has left him impotent and with difficulty urinating - and is suing the hospital for not making the side effects of the sleeping tablets clear to him .
Man , from Boston , had accidentally hit his penis on his partner 's perineum . He heard a snap , immediately lost his erection and saw blood spurting out . He felt searing pain and went to A & E where he was sent for an operation . Had torn his tunica albuginea , the outer sheath of his penis ' inner chamber . Was checked one and 6 months later and had recovered from the ordeal .