16. Knee, Ankle, Tibiofibular Joints Flashcards
(22 cards)
What kind of joint is knee joint?
- Synovial hinge joint
2. Weight bearing joint
Largest sesamoid bone in body?
Patella
What is a sesamoid bone?
Bone inside tendon
Which muscle does patella form in?
Quadriceps
Movement of femur to lock knee joint?
Medial rotation
Movement of femur to unlock knee joint?
Lateral rotation
What muscle is involved in unlocking knee joint?
Popliteus muscle
Medial collateral ligament associated with preventing what action?
Abduction
Lateral collateral ligament associated with preventing what action?
Adduction
Valgus stress test is used to test what action?
Abduction
Varus stress test is used to test what action?
Adduction
Where are the cruciate ligaments found?
Inside intercondylar fossa
Functional role of ACL?
Prevents anterior displacement
Functional role of PCL?
Prevents posterior displacement
When is the ACL taut?
Knee extension
When is the PCL taut?
Knee flexion
What is the test for checking sprain of ACL?
Anterior Drawer Sign
What is the test for checking sprain of PCL?
Posterior Drawer Sign
What type of joint is Superior Tibiofibular Joint? Function?
Synovial plane joint
Moves upward during dorsiflexion
What type of joint is Inferior Tibiofibular Joint? Function?
Fibrous joint
Permits small movements of dorsiflexion + forms mortice of ankle joint
What are the articular surfaces of ankle joint covered by?
Hyaline cartilages
Which is the ankle stronger in: dorsiflexion or plantar flexion?
Dorsiflexion
