['The purpose of this study was to determine whether radiographic femoral bicondylar width predicts intra-operative anterior cruciate ligament (ACL) insertion site sizes.', 'Seventy-three consecutive patients (39 males and 34 females; mean age 25.2\xa0years\xa0±\xa010.2) who underwent anatomic ACL reconstruction were retrospectively reviewed. Femoral condyle width was measured using a pre-operative anteroposterior (AP) radiograph of the operative knee. Lines were drawn through the anatomic axis of the femur, as well as perpendicularly through the condyles. Bicondylar width was measured as the maximum width across both the medial and lateral femoral condyles utilizing this perpendicular line. The ACL insertion site lengths (in the AP direction) of both the tibia and the femur were measured intra-operatively using a commercially available arthroscopic ruler.', 'The average bicondylar width was significantly smaller for females compared to males (p\xa0<\xa00.05). The average tibial and femoral insertion site sizes were significantly smaller for females compared to males (p\xa0<\xa00.05). Regression analysis predicted tibial (r '] Does radiographic femoral bicondylar width predict anterior cruciate ligament insertion site sizes?