“…Severe perineal injury involving the anal sphincter (3 rd degree) or anal epithelium (4 th degree), occurs in up to 6% of all vaginal births (Ampt et al, 2015, Ismail andPuyk, 2014) with approximately half resulting in medium to long term health implications such as bowel incontinence (Smith et al, 2013, Suto et al, 2015. Various strategies that can be used by clinicians to reduce the incidence of perineal trauma have been debated in the literature since the 19 th century (Goodell, 1871).…”