Knee Joint general Flashcards
Which is the largest joint in the body?
the knee
What are the bones of the knee joint?
the femur, tibia and patella
not fibula
What are the articulating surfaces of the knee?
Patella and Femur
Lateral condyles of the femur and tibia
Medial condyles of the femur and tibia
what is another name for the articulating surfaces of the tibial condyles?
lateral and medial tibial plateaus
What are the two types of joint classifications in the knee?
Hinge (knee) and plane gliding (patella and femur)
What is the nerve supply to the knee?
Femoral
Obturator
common fibular
tibial
What passes through the capsular ligament to form bursae?
the synovial membrane
Which bursa is between the patella and the skin?
subcutaneous prepatellar
The subcutaneous infrapatellar bursa is between what two structures?
tibial tubercle and the skin
Which bursa is between the ligamentum patella and the tibial tubercle?
deep infrapatellar
the suprapatellar is between what structures?
the femur and common tendon of insertion for the quadriceps
What are the possible movements of the knee joint?
flexion
extension
some rotation possible when flexed
Why does the knee “lock” during full extension?
lateral rotation of the tibia
what feature of the knee makes an extremely solid base for weight bearing?
the “locking” of the knee (tightening ligaments)
How does one “unlock” the knee joint? How does this work?
contraction of the popliteal muscle
causes medial rotation of tibia, thus flexion
