1. An osteotomy guide for indicating the femoral neck resection on a femur having a shaft, a neck extending from the shaft, and a head arising from the neck at the proximal end of the femur, the femoral shaft extending along an anatomic axis from its proximal end to its distal end, a greater trochanter defining the superior-lateral aspect of the femur, the neck and greater trochanter defining a trochanteric fossa between them, the osteotomy guide comprising: a first indexing feature alignable with a first anatomic landmark; a second indexing feature connected to the first indexing feature and alignable with a second anatomic landmark; an extension extending from the first indexing feature; and a resection guide connected to the extension and spaced from the first indexing feature for indicating the resection relative to the indexing features.