Exam 3: Lower limb contd lecture iii Flashcards
knee joint: extracapsular ligaments: fibular (lateral) collateral ligament: origin
from lateral epicondyle of femur
knee joint: extracapsular ligaments: fibular (lateral) collateral ligament: insertion
to head of fibula
knee joint: extracapsular ligaments: fibular (lateral) collateral ligament: it and the tibial collateral ligament are taut when when the knee is _
the knee is extended, aiding stability while standing
knee joint: extracapsular ligaments: fibular (lateral) collateral ligament: as flexion proceeds, it and the tibial collateral ligament become increasingly _
slack, permitting and limiting (serving as check ligaments for) knee rotation
knee joint: extracapsular ligaments: tibial (medial) collateral ligament: origin
from medial epicondyle
knee joint: extracapsular ligaments: tibial (medial) collateral ligament: insertion
to superior, medial tibia
knee joint: extracapsular ligaments: tibial (medial) collateral ligament: at its midpoint, its deep fibers are attached to the
medial meniscus
knee joint: extracapsular ligaments: oblique popliteal ligament: expansion of the tendon of _
semimembranosus
knee joint: extracapsular ligaments: oblique popliteal ligament: origin
from joint capsule near lateral femoral condyle
knee joint: extracapsular ligaments: oblique popliteal ligament: insertion
to just posterior to medial tibial condyle
knee joint: intra-articular ligaments (inside fibrous capsule of knee joint): anterior cruciate ligament: origin
from anterior intercondylar area of tibia
knee joint: intra-articular ligaments (inside fibrous capsule of knee joint): anterior cruciate ligament: insertion
to medial side of lateral femoral condyle
knee joint: intra-articular ligaments (inside fibrous capsule of knee joint): anterior cruciate ligament: prevents _ displacement of the femur on the tibia and _ of the joint
posterior displacement, hyperextension
knee joint: intra-articular ligaments (inside fibrous capsule of knee joint): posterior cruciate ligament: origin
from posterior intercondylar area of tibia
knee joint: intra-articular ligaments (inside fibrous capsule of knee joint): posterior cruciate ligament: insertion
to lateral side of medial femoral condyle
knee joint: intra-articular ligaments (inside fibrous capsule of knee joint): posterior cruciate ligament: prevents _ displacement of the femur on the tibia and helps prevent _ of the knee joint
anterior displacement, hyperflexion
the 2 cruciate ligaments are w/in the _ but outside of the _
w/in the joint capsule but outside of the synovial cavity
the 2 cruciate ligaments wind around each other during _, severely limiting this movement
medial tibial rotation (considerably more lateral rotation is allowed)
in every knee position, one cruciate ligament, or parts of one or both ligaments, is _
tense
knee joint: menisci: medial meniscus: its anterior end (horn) is attached to the _, anterior to the _ ligament
anterior intercondylar area of the tibia, anterior to the ACL
knee joint: menisci: medial meniscus: its posterior end is attached to the _, anterior to the _ ligament
posterior intercondylar area of the tibia, anterior to the PCL
knee joint: menisci: medial meniscus: it also attaches to the _ ligament
tibial collateral ligament
knee joint: menisci: lateral meniscus: its posterior part attaches to the
tendon of popliteus
knee joint: menisci: lateral meniscus: it is also attached, via the _, to the posterior cruciate ligament and the medial femoral condyle
posterior meniscofemoral ligament
the menisci are made of _ and fcn to absorb _ and to deepen the _
fibrocartilage
shock
deepen the articular surface of the tibia
knee joint: movements: the main movements? (2)
flexion (w/ the hamstrings being most important) and extension (quadriceps femoris most important)
knee joint: movements: when the knee is flexed, some _ is also possible
rotation (hamstrings and popliteus are most important)
knee joint: movements: if the knee is fully extended w/ the foot on the ground, the knee passively “locks” due to _ rotation of the _ on the tibia to produce a solid column (the lower limb) for weight bearing
medial rotation of the femoral condyles
knee joint: movements: the menisci are capable to _ slightly on the tibial superior surface as a femoral condyle moves slightly on its corresponding tibial condyle
“migrate”
ankle (talocrural) joint: classification
synovial; hinge
ankle (talocrural) joint: articulating surfaces: _ surface and _ malleolus of tibia w/ talus
inferior surface, medial malleolus
ankle (talocrural) joint: articulating surfaces: _ malleolus of fibula with talus
lateral
ankle joint: movements: main movements are
dorsiflexion and plantarflexion of foot
tibiofibular joints: (superior) tibiofibular joint: classification
synovial; plane
tibiofibular joints: (superior) tibiofibular joint: btwn _ head and _ condyle
fibular head and lateral tibial condyle
tibiofibular joints: (superior) tibiofibular joint: strengthened by the _
anterior ligament of the fibular head
tibiofibular joints: (superior) tibiofibular joint: allows only a slight _ movement
gliding movement
tibiofibular joints: tibiofibular syndesmosis: classificatoin
fibrous; syndesmosis
tibiofibular joints: a compound (2 parts) joint that is the fibrous union of
tibia and fibula
tibiofibular joints: a compound (2 parts) joint that is the fibrous union of tibia and fibula by means of: _ btwn tibial and fibular shafts
interosseous membrane
tibiofibular joints: a compound (2 parts) joint that is the fibrous union of tibia and fibula by means of: and 3 _ btwn the distal ends of the 2 bones
tibiofibular ligaments
tibiofibular joints: allows very slight movement t/f?
true
intertarsal joints (joints btwn 2/more tarsal bones): anatomical subtalar (talocalcaneal) joint: btwn what 2 foot bones
talus and calcaneus
intertarsal joints (joints btwn 2/more tarsal bones): anatomical subtalar (talocalcaneal) joint: classification
synovial; plane
intertarsal joints (joints btwn 2/more tarsal bones): anatomical subtalar (talocalcaneal) joint: movements (2)
inversion and eversion of foot
intertarsal joints (joints btwn 2/more tarsal bones): anatomical subtalar (talocalcaneal) joint: the compound _ additionally includes the talonavicular part of the talocalcaneonavicular joint
clinical subtalar joint
intertarsal joints: transverse tarsal joint: compound joint formed by 2 separate joints _ and _ of the talocalcaneonavicular joint
the calcaneocuboid joint (synovial; plane) and the talocalcaneal part (synovial; ball and socket)
intertarsal joints: transverse tarsal joint: allows forefoot/midfoot to _ relative to the hindfoot, which aids inversion and eversion
rotate
based on your knowledge of lower limb joints and of the fcns of lower limb muscles, at which joints do fibularis longus and fibularis brevis primarily act?
as everters, fibularis longus and fibularis brevis act at the subtalar and transverse tarsal joints
based on your knowledge of lower limb joints and of the fcns of lower limb muscles, at which joints do tibialis anterior and posterior primarily act?
as dorsiflexors and extensors act on the ankle joint
other foot joints: a joint btwn a metatarsal head and proximal phalanx base is a _ (classification_)
metatarsophalangeal joint (classification: synovial, condyloid)
other foot joints: a joint btwn one phalanx head and another phalanx base is an _ (classification)
interphalangeal joint (classification: synovial, hinge)
t/f: the oblique popliteal ligament strengthens and/or support posterior aspect of knee joint
true
cruciate means
cross/crucify “X”
meniscus means
crescent C-shaped (fibrocartilage)
crural refers to the
leg
ligament is bone to bone but also used to describe
connective tissue attaching any structure to another