“…Erosions were predominantly subchondral rather than marginal in distribution in 28 cases (Arcini, 1992; Bennike, 1985; Blondiaux et al, 1997; Campillo, 1990; Ciranni et al, 2002; Clavel et al, 1999; Craps & Gowland, 2015; Fontecchio et al, 2007; Hacking et al, 1994; Hagihara et al, 2015; Inoue et al, 1999; Kacki, 2013; Kilgore, 1989; Klepinger, 1979; Mant, 2014; May, 1897; Mays et al, 2017; Mckinnon et al, 2013; Rogers et al, 1981), four of which had sclerotic erosional margins (Inoue et al, 1999; Kilgore, 1989; Mckinnon et al, 2013; Rogers et al, 1981) and four of which had surface calcific deposits (Ciranni et al, 2002; Kilgore, 1989; Mckinnon et al, 2013). Fusion of appendicular joints was present in 25 individuals (Arcini, 1992; Blondiaux et al, 1997; Campillo, 1990; Ciranni et al, 2002; Clavel et al, 1999; Hacking et al, 1994; Hagihara et al, 2015; Inoue et al, 1999; Isidro et al, 2015; Kilgore, 1989; Kim et al, 2011; Leden et al, 1988; Macke & Macke‐Ribet, 1994; May, 1897; Ruffer, 1918; Šikanjić & Vlak, 2010; Steinbock, 1976; Tesi et al, 2019; Thould & Thould, 1983). Osteophytes were prominent in six individuals (Arcini, 1992; Kilgore, 1989; Klepinger, 1979); reactive new bone formation around erosions (not including those with sclerotic margins on X‐ray) in two (Mant, 2014; Thould & Thould, 1983); periosteal reaction in four (Blondiaux et al, 1997; Hagihara et al, 2015; Leden et al, 1988); and enthesial reaction in two (Isidro et al,…”