Gender differences in the distal femur dimensions and variation patterns in relation to TKA component sizing.

Matching femoral components with distal femurs in female patients can be difficult. The purpose of this study was to determine the validity of the following hypotheses: (1) Anteroposterior (AP) dimensions do not increase proportionately to medial-lateral (ML) dimensions in men and women. (2) The AP/ML ratio is different in men and women.