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knee anatomy
knee anatomy
43
Anatomy
Graduate
09/30/2012

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Cards

Term
what is the purpose of the thick fascial sheath in the legs
Definition
helps venous system push blood back up
Term
what muscles attach to IT band
Definition
TFL, Glute max, tibialis anterior
Term
is the short head of the biceps femoris a commonly pulled muscle in the hamstrings?
Definition
yes
Term
describe the IT band's attachments
Definition
IT band attaches to a tubercle inferior to the lateral aspect of the iliac crest. IT band is invested into the fascia. It is also the lateral muscular septum for the thigh, diving in and attaching to the femur
Term
why do some people say you can't stretch the IT band
Definition
it is attached to so many things
Term
describe the articularis genus muscle
Definition
cute little strips of fibers on the anterior/distal femur that attaches to the synovial membrane of the knee joint and holds the capsule proximally as the knee extends.
Term
what is the purpose/action of the articularis genus muscle
Definition
holds the capsule proximally as the knee extends
Term
what forms the quadriceps tendon
Definition
rectus femoris, vasti
Term
which muscle ends highest into the quadriceps tendon
Definition
rectus femoris
Term
what type of bone is the patella
Definition
sesamoid
Term
is there a separate muscle of the vastus medialis obliqus?
Definition
debatable
Term
how does the IT band cause pain down into the anterior tibialis muscle?
Definition
through tendons
Term
what ligaments go over the popliteal muscle
Definition
lateral collateral ligament, arcuate ligament
Term
what are the 3 muscles of the pes anserinus
Definition
gracilis, semitendinosus, sartorius
Term
what is the deep, medial hamstring muscle?
Definition
semimembranosus
Term
which muscle has slips attaching to the medial meniscus
Definition
semimembranosus
Term
is the semimembranosus or semitendinosus easier to fee?
Definition
semitendinosus
Term
what does the lateral/fibular collateral ligament feel like when taut
Definition
tubular/pencil
Term
what are the attachments of the semimebranosus
Definition
posterior tibia, posterior capsule, medial meniscus
Term
what are the actions of the semimembranosus
Definition
flex the knee, pull the medial meniscus back when flexing the knee
Term
what is the path of the medial collateral ligament
Definition
attaches to medial aspect of medial femoral condyle then comes down and crosses the knee.
Term
what are the 2 parts of the medial collateral ligament
Definition
superficial, deep
Term
what is the purpose of the pes anserinus
Definition
provides medial joint stability
Term
what is the path of the fibular nerve at the knee
Definition
comes out from behind, wraps around lateral aspect of fibular head
Term
why does the medial meniscus get injured more than lateral meniscus
Definition
medial meniscus is connected to tendons, which keep it from moving as much
Term
what are the loadbearing surfaces of the patella
Definition
medial/lateral walls of the femoral condyle
Term
is the lateral or femoral wall of the femoral condyle longer
Definition
lateral wall of the femoral condyle is higher than the medial wall
Term
does the patellar loadbearing joint space ever touch the tibia
Definition
no
Term
does the medial or lateral femoral condyle have a larger surface area of the tibiofemoral joint
Definition
medial
Term
how is the femoral head angled in respect to the femur
Definition
anterior
Term
why must the femoral head be anterior to the femur
Definition
to fit in the anterior facing acetabulum
Term
what is anteversion
Definition
angle of the femoral head anterior to the femr
Term
what is the path of the ACL
Definition
from superior-lateral-posterior femur to inferior-medial-anterior tibia
Term
what is the path of the posterior collateral ligament
Definition
goes from superior-anterior-medial femur to inferior-posterior-lateral tibia
Term
how to make crossed fingers like ACL PCL
Definition
cross middle finger over 1st finger and place on knee pointing toward ground. ACL is middle finger
Term
what are the 2 bundles of the ACL
Definition
anteromedial bundle, posterolateral bundle
Term
which ACL bundle is smaller
Definition
anteromedial
Term
with which knee motion is the anteromedial bundle of the ACL tighter
Definition
flexion
Term
with which knee motion is the posteromedial bundle of the ACL tighter
Definition
extension
Term
at what degree of knee flex/ext is the ACL most lax
Definition
30 degrees
Term
why are there 2 bundles of the ACL
Definition
in order to have various parts tight as it goes through ROM
Term
why is the posterolateral bundle of the ACL bigger/ thicker?
Definition
it bears more of the everyday load of activities
Term
what is anteromedial rotary instability?
Definition
medial aspect of the tibia is rotating anteriorly. Same as posterolateral insabilit
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