“…Centres that published long-term outcomes have either pooled cases within the Wassel classification or other systems, used different surgical techniques, reported results using various assessment systems with a short or long follow-up time. As mentioned, all these variables make the results difficult to compare (Cheng et al., 1984; de Almeida, 2017; Engelhardt et al., 2016; Gholson et al., 2019; Kayalar et al., 2014; Ku et al., 2022; Lee et al., 2022; Patel et al., 2014; Stutz et al., 2014; Wang et al., 2019; Yen et al., 2006) (Table 1).…”