Anteromedial ridging of the femoral intercondylar notch: an anatomic study of 170 archival skeletal specimens

Purpose (1) To identify the relationship between anteromedial notch ridging, a recently identified non-contact anterior cruciate ligament injury risk factor, and patient demographics in a general population. (2) To characterize the symmetry of the femoral notch between knees. Methods The femoral notches of 170 non-arthritic archival skeletal specimens devoid of soft-tissue attachments ( n = 79 females, 90 males, 34.3 ± 15.7 years) were measured for notch width, ridge thickness, and outlet stenosis due to ridging. Measurements were compared by race and sex by ANOVA, and Pearson correlations were calculated for all continuous measures. Results Percent stenosis was associated with increasing age ( p