• Shuffle
    Toggle On
    Toggle Off
  • Alphabetize
    Toggle On
    Toggle Off
  • Front First
    Toggle On
    Toggle Off
  • Both Sides
    Toggle On
    Toggle Off
  • Read
    Toggle On
    Toggle Off
Reading...
Front

Card Range To Study

through

image

Play button

image

Play button

image

Progress

1/40

Click to flip

Use LEFT and RIGHT arrow keys to navigate between flashcards;

Use UP and DOWN arrow keys to flip the card;

H to show hint;

A reads text to speech;

40 Cards in this Set

  • Front
  • Back
Supporting ligaments of the sacroiliac joint
dorsal sacroiliac
ventral sacroiliac
sacrotuberous
Conclusions about motion at the sacroiliac joint
capable of small motion
rotation and translation occur together
lots of factors affect motion - age, gender, ligaments, etc.
the socket of the acetabulum is oriented
lateral, inferior, anterior
ligaments of the hip joint
iliofemoral, ischiofemoral, pubofemoral
iliofemoral ligament resists -
lateral rotation, adduction
pubofemoral ligament resists -
abduction
ischiofemoral ligament resists -
internal rotation, abduction
Coxa valga
angle between femoral neck and shaft greater than 130 degrees: less bending on femoral neck, decreased articulating surface, joint stress increased, decreased abductor MA
Coxa vara
angle between femoral neck and shaft less than 130 degrees: more bending on femoral neck, greater articulating surface, joint stress decreased, increased abductor MA
actions of psoas major
primary hip flexor
some lateral rotation
increases lumbar lordosis
actions of gluteus maximus
primary hip extensor
greatest lateral rotator
abduction, adduction
abductors of hip and their main role
gluteus medius and minimus
stabilize pelvis during single limb stance
actions of adductor magnus
largest hip adductor
extend hip
some portions help with rotation
stabilize pelvis during weight shift
actions of the lateral rotators of the hip
laterally rotate hip
dynamic stabilizers of hip
actions are altered by hip position
medial rotators of the hip
there are no primary medial rotators!
tibiofemoral motion during flexion
• Femur rotates posteriorly
• Laterally rotates
• Abducts
• Translates anteriorly
tibiofemoral motion during extension
• Femur rotates anteriorly
• Medially rotates
• Adducts
• Translates posteriorly
medial collateral ligament of the knee
Larger than lateral and has deep and superficial layers
Withstands valgus stress
More substantial because valgus stress is more common
lateral collateral ligament of the knee
Cord-like, and does not attach to meniscus
Withstands varus stress
characteristics of cruciate ligaments
intracapsular and extrasynovial
mainly limit anterior/posterior translation, but also rotation
anterior cruciate ligament
limits anterior glide of tibia on femur
tightest in knee extension
posterior cruciate ligament
limits posterior glide of tibia on femur
tightest in knee flexion
limits varus and valgus as well
normal alignment of the knee joint
frontal plane - small amount of valgus
sagittal plane - 180 degrees
extensors of the knee
rectus femoris
vastus intermedius
vastus lateralis
vastus medialis
actions of the rectus femoris
knee extension
hip flexion
some hip lateral rotation and abduction
actions of the three vasti
intermedius - knee extension, pulls patella proximally
lateralis - knee extension
medialis - knee extension, patellar stabilization
actions of hamstrings
knee flexion and rotation
hip extension
contribute to knee joint stability
medial rotators of the knee
sartorius and gracilis
actions of sartorius and gracilis
S - hip flexion, abduction, lateral rotation; knee flexion
G - knee flexion, medial rotation; hip adduction
pes anserinus
gracilis, sartorius, and semitendanosus
the medial rotators and dynamic stabilizers of the knee
actions of the tensor fascia latte
hip flexion, abduction, and medial rotation
knee extension and lateral rotation
stabilizes pelvis over stance limb
lateral collateral ligaments of the ankle
anterior talofibular
posterior talofibular
calcaneal fibular
closed chain pronation of the foot
knee flexes
tibia and talus rotate medially
calcaneous everts
foot is loose bag of bones
closed chain supination of foot
knee extends
tibia and talus rotate laterally
calcaneous inverts
foot is stronger, allowing for firm strike and lift off
actions of anterior tibialis
largest dorsiflexor
achilles tendon
strongest in body
largest MA of all muscles
stores energy and increases plantarflexion efficiency
actions of gastrocnemius
plantarflexes ankle
secondary inverter of ankle
flexes knee
actions of soleus
plantarflexes ankle
secondary inverter of ankle
actions of posterior tibialis
primary inverter of ankle because of large MA and large PCSA
secondary plantarflexor
supports medial arch
actions of the peroneus longus and brevis
primary everters of foot
secondary plantar flexor