Joints of Lower Limb Flashcards
what is the movement of the hip joint
- flexion
- extension
- adbuction
- adduction
- medial rotation
- lateral rotatio
- circumduction
what kind of joint is the ball and socket
multiaxial ball and socket synovial joint
what increse the depth of the acetabulum
the acetabular labrum
what is the acetabular labrum
fibrocartilage lip
what part of the acetabulum is weak
the inferior area notch
what is a ligament in the hip joint
transverse acetabular ligament which is a continuation of the labrum
what does the hip capsule do
forms s sleeve that encloses the hip joint and most of the neck of the femur
what is zona orbicularis
annular ligament of the hip
– circular fibuer on the distal capsule encircling femoral neck
what does the zona orbicularis do
helps to stabilize the hip like a buttonhole
what are the three ligaments of the capsule of the hip
iliofemoral
pubofemoral
ischiofemoral
where can the iliofemoral be found
anteriorly
AIIS to intertrochanteric line
what is the iliofemorals shape
Y shaped
what does the iliofemorals do
prevents hyperextension of the hip joint during standin
where can the pubofemoral be found
infereior and anterior
- superior pubic ramus to medial surface of femoral neck
what does the pubofemoral do
prevents over abduction
where can the ischiofemoral be found
posteriorly
body of ischium to posterior femoral neck
what does the ischiofemoral do
limits extension
what do all of the hip ligaments have in common
all have a spiral course aroudn the neck of the femur that blend in witht he distal parts of the capsul
on the right side what do the hip lig do
spiral clockwise
on the left side what do the hip lig do
spiral counter clockwise
what happens to the lig of the hip when the femur is extended
on each side they become more tightly wrapped aroudn the neck of the femur
what supplies the hip joint with blood
branches of the medial an lateral circumflex femoral artery
** the retinacular is the main supplier of this
what supplies the head of the femur with blood
obturator artery
what are the nerves of the hip joint
femoral n
obturator n
n to quadratus femoris
superior gluteal n
what type of joint is the knee
hinge type snynovial joint
what is the knees 3 articulations
intermediate
lateral and medial - between femoral & tibial condyle
what stabilizees the knee
ligaments and muscles aroudn the knee
what is the primarily movement of the knee
flexion and extension
and some rotation
what does the knee do when leg is fully extended
the knee locks due to the medial rotation of the femur on the tivia
what does the knee joint capsule have
external fibrous layer
- internal synovial membrane
how is the knee enclosed by the capsule
only partially enclosed
what are the side of the capsule like
- anterior- think to allow formation of the suprapatellar bursa
- posterior - the capsule is deficient
- superiorly- the capsule attaches proximal to the condyles of the femur
- inferior- attachment is at the articular margins of the tibial condyles
what is the posterior opening of the knee for
the popliteus tendon
what stengthens the capsule
the 5 extracapsular ligaments
what are the extracapsualr ligaments
- patellar
- fibular collateral
- tibial collateral
- tibial collateral
- obiques popliteal
- arcuate popliteal
what is the patellar ligament
- continuation of the tendon of the quad
- continuous with fibrosis capsule of knee
- patella is in he tendon
- easily felt with leg extended
when are the collateral ligaments taut
when knee is fully extended
what is the fibular collateral ligament
- lateral ligament
where can the FCL of the knee found
lateral epicondyle of femur to lateral surface of the head of he fibula
what does the FCL of the knee do
checks hyperextension
what is the tibial collateral ligament of the knee
medail ligament and is weaker than the fibular one