Joint
What type of joint is the knee?
Synovial hinge joint
Which ligament resists valgus stress?
Medial collateral ligament (MCL)
Name the muscle group responsible for knee extension.
Quadriceps
What is a common mechanism for ACL tears?
Dynamic valgus with internal rotation
What are the two primary articulations in the knee?
Tibiofemoral and patellofemoral joints
What does the anterior cruciate ligament (ACL) prevent?
Anterior displacement of the tibia
Which muscle group is the primary flexor of the knee?
Hamstrings
Which injury mechanism involves a posterior blow to the tibia?
PCL injury
What is the role of the menisci in the knee?
Shock absorption and stability
Which ligament resists posterior displacement of the tibia?
Posterior cruciate ligament (PCL)
What role do the hamstrings play in preventing ACL injuries?
Reducing anterior tibial shear
Why are medial meniscal tears more common than lateral?
The medial meniscus is more firmly attached and less mobile
What is the primary function of the patella?
Increases mechanical advantage of the quadriceps
Name the ligament that resists varus stress.
Lateral collateral ligament (LCL)
Name the medial hamstring muscle located deep to the semitendinosus.
Semimembranosus
What condition is caused by abnormal tracking of the patella?
Patellofemoral pain syndrome