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Official Journal of the Italian Society of Orthopaedics and Traumatology

Table 1 Definition of the radiographic measurements using the anteroposterior and lateral view

From: Increase in cartilage degeneration in all knee compartments after failed ACL reconstruction at 4 years of follow-up

Tibial slope

Angle between the tibial plateau and the mechanical axis in the lateral view

Femoral roof angle

Angle between the Blumensaat’s line and the posterior cortical bone of the femur

Intraarticular aperture site of the tibial tunnel in the AP view

Aperture site in % = 100% × A/A + B

A = distance from the medial border of the tibial plateau to the center of the tunnel

B = distance from the lateral border of the tibial plateau to the center of the tunnel

Intraarticular aperture site of the tibial tunnel in the lateral view

Aperture site in % = 100% × A/A + B

A = distance from the anterior border of the tibial plateau to the center of the tunnel

B = distance from the posterior border of the tibial plateau to the center of the tunnel

Angle of the tibial tunnel in the AP view

Angle between the tibial plateau and the tibial tunnel

Angle of the tibial tunnel in the lateral view

Angle between the tibial plateau and the tibial tunnel

Intraarticular aperture of the femoral tunnel in the lateral view

Aperture site at the Blumsaat’s line in % = 100% × A/A + B

A = distance from the posterior femoral cortical bone to the center of the tunnel

B = distance from the anterior femoral condyle to the center of the tunnel

Femoral angle in the AP view

Angle between a line drawn perpendicular to the tibial plateau and the femoral tunnel

Graft angulation in the AP view

Angle between the graft orientation and the tibial plateau