vorderes Kreuzband des Kniegelenks
Anterior cruciate ligament (ACL) is one of the two cruciate ligaments that stabilize the knee joint.
Gross anatomy
The ACL arises from the anteromedial aspect of the intercondylar area on the tibial plateau and passes upwards and backwards to attach to the posteromedial aspect of the lateral femoral condyle.
Like the posterior cruciate ligament, the ACL is intracapsular but extrasynovial.
The ACL consists of two components :
- attaches to roof of intercondylar notch
- more vertically oriented, and slightly shorter
- attaches to wall of intercondylar notch
Blood supply
- arterial: middle genicular artery
Function
The ACL functions to prevent posterior translation of the femur on the tibia (or anterior displacement of the tibia) during flexion-extension of the knee. The AMB is responsible for the posterior translation of the femur at 30 degrees flexion, and the PLB resists hyperextension and prevents posterior translation of the femur in extension .
Radiographic appearance
MRI
Unlike other ligaments or tendons, the ACL normally has a heterogeneous appearance and the AMB and PLB are defined by surrounding high-intensity structures .
The ACL Blumensaat line angle is normally ≤15º. It is calculated by drawing a line parallel to the roof of the intercondylar notch of the femur (Blumensaat's line) and one parallel to the distal portion of the ACL. The angle is calculated at the intersection of these two lines. An angle of >15º indicates an abnormal course and probable ACL tear .
Related pathology
Siehe auch:
- mukoide Degeneration des vorderen Kreuzbandes
- Ganglion des vorderen Kreuzbandes
- knöcherner Ausriss vorderes Kreuzband
- Ruptur des vorderen Kreuzbandes
- posterior cruciate ligament (PCL)
- Teilruptur vorderes Kreuzband
- vordere Kreuzbandplastik
- Komplikationen nach vorderer Kreuzbandplastik
- Meniskusrisse bei Ruptur des vorderen Kreuzbandes
- Reruptur vorderes Kreuzband
und weiter:
Assoziationen und Differentialdiagnosen zu vorderes Kreuzband des Kniegelenks:
