Removing excess fat around the pubic area can make a partly buried penis appear more prominent. "A lot of men who have this treatment don't truly appreciate this loss of angle," says Professor Wylie. "It can make sex quite uncomfortable. You've got to do a lot more manoeuvring with your partner. The advantage of a 2cm gain in flaccid length is far outweighed by the loss of angle of erection." Professor Wylie says the use of biodegradable frames has had better results than fat injection.