Unit 5: Lower Extremity Joints Flashcards
(38 cards)
-coxa articulates with contralateral cola anteriorly
-cartilaginous (amphiarthrotic) joint
-allows for minimal movement
pubic symphysis
-ilium articulates with sacrum posteriorly
-nearly immoveable joints on there lateral aspect of the sacrum
sacroiliac joint
-acetabulum articulates with femoral head laterally
-ball and socket joint
-ligaments provide most support for joint
-acetabular labrum and musculature also provide stability
coxofemoral joint
anterior sacroiliac ligament
posterior sacroiliac ligament
sacrotuberous ligament
sacrospinous ligament
-also called ligamentum capitus or round ligament
-travels from fovea capitus to the acetabulum
-conduit for nutrient vessels to the head
ligamentum teres
-forms inferior aspect of labrum
-helps maintain position of the femoral head in the acetabulum
transverse acetabular ligament
-enhances joint stability by deepening the acetabulum and acts as a seal to maintain negative intra-articular pressure
labrum
-strongest ligament in the body, y-shaped
-helps stabilize joint in the upright position
-limits hyperextension
iliofemoral ligament
-ischium to edge of greater trochanter
-sets femur head into acetabulum
-limits medial rotation
ischiofemoral ligament
limits abduction
pubofemoral ligament
-articulation between patella and patellar surface of femur
-contact point between undersurface of patella and femoral condyle changes depending on angle of knee flexion
-malalignment can lead to osteoarthritis
patellofemoral joint
tibiofemoral joint
-attachments are lateral epicondyle of femur and head of fibula
-prevents adduction of lower leg
lateral collateral ligament
-attachments are medial epicondyle of femur and medial tibia
-prevents abduction of lower leg
medial collateral ligament
-attachments are anterior intercondylar area of tibia and the lateral condyle of the femur
-contains two bundles
-prevents anterior displacement of tibia
-prevents knee hyperextension
-primary restraint to dynamic values of knee
anterior cruciate ligament
-attachments are posterior intercondylar area of tibia and medial condyle of the femur
-contains two bundles
-prevents posterior displacement of tibia on femur
-limits varus, valgus, and external rotation
posterior cruciate ligament
-formed by the articulation between the tibia and fibula
-near the knee
proximal tibiofemoral joint
-formed by the articulation between the tibia and fibula
-near the ankle
-syndesmosis formed by interosseous/syndesmotic membrane
distal tibiofibular joint
interosseous membrane
-referred to as “ankle mortise”
-modified hinge joint
-articulation of tibia, fibula, and talus
talocrural joint
-3 plane joints
-articulation of talus and calcaneus
talocalcaneal/subtalar joint
