Evaluation of the Effect of the Sulcus Angle and Lateral to Medial Facet Ratio of the Patellar Groove on Patella Tracking in Aging Subjects with Stable Knee Joint

Figure 3

Illustration of the anatomical parameters measured. : the maximum transverse diameter (MTD) of the patella. : the lateral part from the projection point of the deepest point of the trochlear groove on the MTD. Bisect offset index = . : angle of patellar tilt. : sulcus angle. : length of the lateral facet. : length of the medial facet. Lateral to medial facet ratio = . : lateral trochlear inclination. : tibial tuberosity-trochlear groove distance.