It might have emancipated women from the drudgery of the 'Missionary Position', but it seems that men are paying a painful price for revolution in the bedroom.

"Woman on top" is the most dangerous sex position, according to a new scientific study.

Risky sex: 'Woman on top' responsible for half of all penile fractures in the bedroom. Credit:Getty Images

Scientists have found that the position, dubbed "cowgirl", is responsible for half of all penile fractures in the bedroom.

The research also revealed that the "doggy-style" position, with women on all fours, is behind 29 per cent of afflictions.