1. A method comprising: accessing anatomical image data including data representing at least a portion of a target orthopedic implant recipient, the anatomical image data including sufficient detail to allow automated measurement of both internal and external geometry of a proximal end of a femur of the target orthopedic implant recipient; receiving indication of a plurality of landmark locations within the anatomical image data; constructing, based at least in part on the plurality of landmark locations, a femoral canal axial indication along a femoral canal within the anatomical image data; producing a plurality of lateral anatomic structural measurements along, and substantially perpendicular to, the femoral canal axial indication, wherein producing the plurality of lateral anatomic structural measurements includes performing at least an edge detection image processing algorithm in multiple locations within at least a portion of the image data using one or more processors to automatically calculate the plurality of lateral anatomic structural measurements; calculating, based at least in part on the plurality of lateral anatomic structural measurements, a medial flare index (MFI) and a lateral flare index (LFI); and selecting, based at least in part on the plurality of lateral anatomic structural measurements along the femoral canal axial indication, the MFI, and the LFI, a prosthesis from a range of existing prostheses to best fit the femur of the target orthopedic implant recipient.