“…Various studies have documented high prevalences of osteochondrotic lesions in the horse (e.g. Hoppe, 1984a,b; Harfst, 1986; Alvarado et al., 1989; Grøndahl, 1991, 1992; Heinz, 1993; Merz, 1993; Kirchner, 1996; Leonhardt, 1996; Kahler, 2001; Pieramati et al., 2003; Sandgren et al., 1993a,b; Schougaard et al., 1990; Thomsen, 1995). However, many reports refer either to radiographic surveys in limited numbers of very young horses (2 years old or younger), i.e.…”