Screws were placed in the regions superolateral : monoaxial @ % , polyaxial @ % ( p = @ ) ; superomedial : monoaxial @ % , polyaxial @ % ( p = @ ) ; inferolateral : monoaxial @ % , polyaxial @ % ( p = @ ) ; inferomedial : monoaxial @ % , polyaxial @ % ( p = @ ) , superoposterior : monoaxial @ % , polyaxial @ % ( p = @ ) ; superoanterior : monoaxial @ % , polyaxial @ % ( p = @ ) ; inferoposterior : monoaxial @ % , polyaxial @ % ( p = @ ) and inferoanterior : monoaxial @ % , polyaxial : @ % ( p = @ ) .