A method and apparatus for changing a configuration of a bone. The method includes the steps of: fixing a first part of a bone plate to the bone at a first location； securing a guide assembly in an operative position in relationship to the bone； engaging a bone part moving assembly with the bone at a second bone location spaced from the first bone location； cutting the bone to define first and second bone sections and so that the bone part moving assembly engages the second bone section and the first bone location is on the first bone section； relatively repositioning the first and second bone sections into a desired relationship and thereby causing a part of the bone part moving assembly to move guidingly, together with the second bone section, in a controlled path； and fixing the first and second bone sections in the desired relationship. The first and second bone sections can be controllably relatively moved lengthwise of the bone plate without requiring guided movement of any component that extends through the bone plate and into the bone.
