“…However, pain associated with subluxation or dislocation was reduced in 9 of the patients. Chiari osteotomy has been used to treat hip subluxation and dislocation resulting from neitromusculur disorders (Otte 1969, Chiari 1974, Purath 1979, Bohler 1983, Root 1987, Thompson et al 1987, Osterkamp et al 1988, Gamble et al 1990, Pope et al 1994, Dietz and Knutson 1995, Niethard et al 1995a, Root et al 1995, DDH (Chiari 1974, Salvati and Wilson 1974, De Waal Malefjt et al 1982, Moll 1982, Bohler 1983, Fernandez et al 1984, Bohler et al 1985, Hogh and MacNicol 1987, Matsuno et al 1992, Rigo et al 1994, Niethard et al 1995a, Legg-Perthes' diseuse (Chiari 1974, Lack et al 1987, Thompson et al 1987, Robinson et al 1988, Mike and Bellyei 1989 and posttraumutic dysplasia (Trousdale and Ganz 1994). Osteotomy potentially improves femoral head coverage.…”