Muscles of the Hip and Knee Flashcards
Quadriceps femoris
- Vastus Muscles
2. rectus Femoris
Vastus Muscles
3 muscles that originate on the femur
- Vastus medialis
- Vastus Lateralis
- Vastus Intermedialis
Rectus Femoris
origin in the ilium
actions: extension of knee and flexion of hip joint
stretch: heel to seat with pelvis on floor
Hamstrings
3 posterior thigh muscles which cross both hip and knee
- Semimenbranous
- Semitendinous
- Biceps femoris
Action: extend the hip and flex the knee
Semimembranous
origin at ishial tuberosity
attaches to inner back aspect of the tibial condyle
Semitendinous
origin at ishial tuberosity
inserts via a long thin tendon to the super medial tibial shaft
Biceps femoris
2 heads
long head - origin at ishial tuberosity
short head - origin at the posterior femoral shaft
insert at the head of fibula
Gluteus medias
broad origin on the external iliac fossa
insert on the lateral aspects of the greater trochanter
action: hip abduction and assists with flexion and extension of hip
Gluteus minimus
small muscle origin in front of flutes medias
inserts on front aspect of greater trochanter
action: hip abduction and assists with flexion and extension of hip
Gluteus maximus
largest muscle in body
origin from posteriolateral sacrum, posterior ilium and sacrotuberous ligament, which connects lower sacrum with ischial tuberosity
action: hip extension, lateral rotation
Tensor Fascia Latae
located pants front pocket
superficial portion of gluteus maximus
insert onto iliotibial tract from opposite directions
IT-Band
woven into the femoral fascia
inserted in a protuberance laterally and below the knee
Sartoris
longest muscle in body
origin from anterior superior iliac spine and runs down medially on the thigh over the quadriceps
insert on the superomedial shaft of the tibia
action: flexion of hip, lateral rotation, abduction of the hip
Adductors
Pectineus Adductor brevis Adductor longus Adductor magnus Gracillis
Pectineus
origin at lateral pubis and lessor trochanter to run down the femur
attaches at linea aspera
Adductor brevis
origin at medial pubis
attaches to middle part of line aspera
Adductor longus
more medially on the pubis and runs anterior to the adductor brevis muscle
insert lower down on the line aspera
Gracillis
long thin outer adductor
origin on the inferomedial pubis
insert onto the tibial shaft below medial condyle
Adductor magnus
largest and strongest of adductors
origin form the ishio pubic rams and runs infereo medially
ending in a very broad insertion on the line aspera
