Table 3.

Reported knee anatomic differences between men and women

Characteristic	Reported mean values		Reference
	Men	Women
Distal femoral measurement
Aspect ratio	0.77	0.69	4, 24
	Aspect ratios decreased as AP measurements increased in women, whereas aspect ratios remained more constant as AP measurements increased in men.
Anterior condylar height (mm)	5.7	4.6	18, 41
Patellar measurements
Q angle (°)	13.3	15.7	1, 19, 50
Trochlear groove rotation (°)	4.40	5.38	41
Patellar contact area (0° flexion) (mm2)	139	146	11
Patellar contact area (90° flexion) (mm2)	275	159
Femoral head diameter (cm)	4.9	4.3	7, 30, 38
Proximal femoral shape	The authors defined a triangle with the vertices being (1) the most medial aspect of the greater trochanter, (2) the most proximal point of the lesser trochanter, and (3) the most lateral articular margin of the femoral head. All distances between these points were shorter in women than in men.		42