Which structure is not considered a primary stabilizer of the stifle?

Which structure is not considered a primary stabilizer of the stifle?

• A. Patellar ligament
• B. Cranial cruciate ligament
• C. Medial collateral ligament
• D. Lateral collateral ligament

Answer: (A)

The stifle is stabilized mainly by ligaments that control movement between the femur and tibia: the cranial cruciate ligament prevents the tibia from sliding forward and helps limit rotation, while the medial and lateral collateral ligaments resist forces that push the joint medially or laterally. The patellar ligament is part of the extensor mechanism, anchoring the patella to the tibia and transmitting quadriceps force to extend the knee. It mainly stabilizes the patellofemoral area and supports extension, not the stifle joint itself against cranial translation or side-to-side stresses. So the patellar ligament is not a primary stabilizer of the stifle.

The stifle is stabilized mainly by ligaments that control movement between the femur and tibia: the cranial cruciate ligament prevents the tibia from sliding forward and helps limit rotation, while the medial and lateral collateral ligaments resist forces that push the joint medially or laterally. The patellar ligament is part of the extensor mechanism, anchoring the patella to the tibia and transmitting quadriceps force to extend the knee. It mainly stabilizes the patellofemoral area and supports extension, not the stifle joint itself against cranial translation or side-to-side stresses. So the patellar ligament is not a primary stabilizer of the stifle.