Intercondylar Roof Line

The cacl is consistently located between 43 2 and 45 0 of the anteroposterior length of the tibia.

Intercondylar roof line. The angle measured between a line drawn along the femur diaphysis and the femoral tunnel angle must be approximately 39. A line is drawn along the posterior cortex of the femur. Morphologic variations of blumensaat line iriuchishima s classification. It can been used for.

If you need to insert a screw in the area distal to the blumensaat s intercondylar roof line make sure to direct the screw anteriorly in order to avoid the intercondylar notch. In addition the area of the lateral knee recess should be avoided. A second line is drawn along the roof of the intercondylar notch of the femur blumensaat line the point of intersection of these two lines should be at the inferior portion of the femoral component of the graft. The tibial footprint of the acl is located in a position on the tibia that is consistent and does not vary according to intercondylar roof angle.

Indicating relative position of patella normally intersects the lower pole of the patella. Evaluating for acl injury normal acl blumensaat angle is 15. We found that in the normal knee the roof line intersects the tibial plateau roof plateau intersection ratio at 31 5 sd 5 of its width and at 33 9 5 4 in the acl deficient knee p 001. Blumensaat line also known as the intercondylar line is the line drawn along the roof of the intercondylar notch of the femur on sagittal view of the knee.