“…Another problem is to maintain the correction achieved during the bone-healing period, and several techniques using different fixations have been described (Ivarsson and Larsson 1989, Koshino et al 1989, Miniaci et al 1989, Yasuda et al 1992, Zuegel et al 1996. In some cases, a gradual loss of correction occurs during the first few years, and could be explained by several factors, i.e., a progression of the gonarthrosis, insufficient bone healing, unbalanced moment forces acting on the knee (Prodromos et al 1985, Wang et al 1990.…”