Intrinsic ligaments of the knee Flashcards
Which ligaments form an “x” in the center of the knee joint?
cruciate ligaments
what ligaments are the main bonds between the femur and tibia?
cruciate ligaments
How are the anterior and posterior cruciate ligaments named?
according to tibial attachments
Which cruciate ligament is weaker?
anterior cruciate
The anterior cruciate prevents what movement?
anterior displacement of the tibia (rope)
To what does the anterior cruciate attach?
lateral condyle of femur
anterior intercondylar area of the tibia
To what does the posterior cruciate attach?
medial condyle of the femur
posterior intercondylar area of the tibia
What type of movement is prevented by the posterior cruciate?
posterior displacement of the tibia (rope)
What structures are well vascularized through 18 months of age and continue to lose blood supply with aging? What aspect become avascular?
Menisci (semilunar cartilages)
central portions are avascular - do not heal well
How is nutrition supplied to the avascular portions of the menisci?
blood vessels in the peripheral portion of the menisci
diffusion from synovial fluid (central menisci)
What are the 3 main functions of the menisci?
deepen articulating surface
shock absorbtion
mechanoreceptors to increase sense of joint
Which meniscus is C shaped?
Medial meniscus
Which meniscus is circular?
Lateral meniscus
Which meniscus is adhered to the tibial collateral ligament?
medial meniscus
Which meniscus is smaller?
lateral meniscus