The operation has been refined in the years since it's introduction (5), with roughly two thirds of patients enjoying acceptable function. However, the complications associated with creating an RPC; notably pelvic sepsis, fistulae, poor mechanical function and inflammation, mean that the cumulative rate of pouch failure is roughly 5% at five years, and up to 15% at 15 years (Ryoo et al. 2014; Remzi et al. 2015; Sherman et al. 2014; R. et al. 2012; Papadopoulos et al. 2010).