“…Treatment failure of unstable trochanteric fractures has been related to the type of internal fixation (Laros and Moore 1974, Jensen 1981, Anderson et al 1984, MGller et al 1984, Paaschburg Nielsen et al 1985, instability after fixation (Flores et al 1990), inadequate reduction, osteoporosis and poor placement of the screw in the femoral head (Laros and Moore 1974, Wolfgang et al 1982, Davis et al 1990). Currently, the compression hip screw (CHS), which allows impaction of the fracture, is commonest (Meislin et al 1990, Kyle et al 1994.…”