“…In some studies functional success is defined as 'satisfaction with sex', which also includes 'non-genital sex' (Callens et al, 2014), or by using the Female Sexual Functional Index (FSFI), which measures desire, arousal, lubrication, orgasm, satisfaction, and comfort (Kuhn et al, 2013;Morcel et al, 2013). Other studies focus on anatomical success, often defined in terms of the achievement of a vaginal length of 7 cm or more (for an overview, see Callens et al, 2014). In general, Lih-Mei Liao et al (2006) asserted, definitions are notably vague; retrospective studies of vaginal dilation have reported a success rate up to 80%, yet rarely do they explore factors such as compliance and outcome.…”