Activity 6: The Knee Joint
What is the largest and most complex joint in the body?
The knee joint consists of which 3 bones?
The knee joint allows what 3 movement types?
3. Some rotation
What are 2 important joints that make up the knee?
1. Tibiofemoral joint
2. Femoropatellar joint
The tibiofemoral joint is what type of joint?
The tibiofemoral joint occurs between what features of the femur and the tibia?
Occurs between the femoral condyles and the menisci of the tibia
The tibiofemoral joint is functionally what structural type of synovial joint?
The menisci of the tibia secures which specific joint of the knee?
Which type of movement (limited) occurs when the knee is partly flexed?
During extension of the knee, the menisci and ligaments counteract which two types of movements?
The femoropatellar joint is positioned how, directionally?
How is the knee unique in regard to an articular capsule?
It is only partly enclosed by an articular capsule.
Anteriorly, where the articular capsule is absent, what are the 3 broad ligaments?
1. Patellar ligament
2. Medial patellar retinacula
3. Lateral patellar retinacula
What 4 extracapsular ligaments are important in reinforcing the knee?
1. Fibular collateral ligament or lateral collateral ligament (LCL)
2. Tibial collateral ligament or medial collateral ligament (MCL)
3. Oblique popliteal ligament
4. Arcuate popliteal ligament
The knees have a built-in device that does what to the knee?
Locks the knee
Which type of muscles "unlocks" the built-in device that locks the knee?"
What are the 2 intracapsular ligaments that cross in the notch between the femoral condyles?
1. Anterior cruciate ligament (ACL)
2. Posterior cruciate ligament (PCL)
The anterior and posterior cruciate ligaments help to prevent which type of displacement and which 2 flexion disorders to the joint?
Helps to prevent anterior-posterior displacement and overflexion and hyperextension of the joint.