Thigh and knee I Flashcards
deep fascia divides thigh into 3 com:
anterior, posterior, medial compartment
general actions of + innervation: anterior com of thigh
- flex thigh at hip
- extend leg at knee
- femoral nerve (inn)
general actions of + innervation: medial com of thigh
adductors of thigh at hip joint
- obturator nerve (inn)
general actions of + innervation: posterior com of thigh
- extend thigh at hip joint
- flex leg at the knee
- sciatic nerve (inn)
list (7) anterior com muscles of thigh:
- sartorius
- illiacus
- psoas (makes iliopsoas)
quadriceps femoris:
- rectus femoris
- vastus lateralis
- vastus medialis
- vastus intermedius
list (5) medial com muscles of thigh:
- adductor magnus
- adductor longus
- adductor brevis
- pectineus
- gracilis
list (3) posterior com muscles of thigh:
- biceps femoris
- semitendinosus
- semimembranosus
tensor fasciae latae: location
superficial lateral
tensor fasciae latae: origin
lateral aspect of iliac crest
- btw ASIS and tuberculum
tensor fasciae latae: insertion
iliotibial tract
tensor fasciae latae: innervation
superior gluteal n
tensor fasciae latae: action
stabilises extended knee
psoas major: location
anterior com thigh, deep
psoas major: origin
bodies + transverse processes T12-L5 and intervertebral discs
psoas major: insertion
lesser trochanter
psoas major: innervation
L1, L2, L3
psoas major: action
flexes thigh at the hip
iliacus: location
ant com thigh,
lateral to psoas major, deep
iliacus: origin
iliac fossa
iliacus: insertion
lesser trochanter
iliacus: innervation
femoral n
iliacus: action
flexes thigh at hip, anterior pelvic tilt
sartorius: location
anterior com thigh, deep
sartorius: origin
anterior superior iliac spine
sartorius: insertion
medial surface of tibia
- (inferomedial to tibial tuberosity)
sartorius: innervation
femoral n
sartorius: action
flexes:
- thigh at hip
- leg at knee
- abducts
- laterally rotates thigh (at hip)
muscles which make up quadriceps femoris:
- rectus femoris
- vastus lateralis
- vastus medialis
- vastus intemedius
general locations of quadriceps muscles:
- v.medialis: most medial
- v.lateralis: most lateral
- v.intermedius: central deep to r.f.
- rectus femoris: central superficial to v.i.
rectus femoris: location
ant com thigh, superficial
rectus femoris: origin
straight head:
- AIIS
reflected head:
- superior to acetabulum
rectus femoris: insertion
tibial tuberosity (via quadriceps tendon and patellar lig)
rectus femoris: innervation
femoral n
rectus femoris: action
- flexed thigh at hip
- extends leg at knee
vastus lateralis: location
ant com thigh, lateral
vastus lateralis: origin
- greater trochanter
- gluteal tuberosity
- linea aspera (lateral lip)
vastus lateralis: insertion
tibial tuberosity (via quadriceps femoris tendon and patellar lig)
vastus lateralis: innervation
femoral n
vastus lateralis: action
extends leg at knee
vastus medialis: location
ant com thigh, medial
vastus medialis: origin
- intertrochanteric line
- linea aspera (medial lip)
vastus medialis: insertion
- tibial tuberosity (via quadriceps femoris tendon and patellar lig)
- medial border of patella
vastus medialis: innervation
femoral n
vastus medialis: action
extends leg at knee
vastus intermedialis: location
ant com thigh, deep to rectus femoris
vastus intermedialis: origin
upper anterior and lateral femur
vastus intermedialis: insertion
- tibial tuberosity (via quadriceps femoris tendon and patellar lig)
- lateral border of patella
vastus intermedialis: innervation
femoral n
vastus intermedialis: action
extends leg at knee
gracilis: location
medial com of thigh, deep
gracilis: origin
- body of pubis
- ischiopubic ramus
gracilis: insertion
medial proximal shaft of tibia
gracilis: innervation
obturator n
gracilis: action
- adducts thigh at hip
- flexes and assists in medial rotation of leg at knee
pectineus: location
medial com thigh, superior
pectineus: origin
superior ramus of pubis (pecten)
pectineus: insertion
pectineal line of femur
pectineus: innervation
obturator/ femoral n
pectineus: action
adducts and flexes thigh at hip
adductor longus: location
medial com thigh, inferior
adductor longus: origin
body of pubis
adductor longus: insertion
linea aspera (middle 1/3)
adductor longus: innervation
obturator n
adductor longus: action
adducts thigh at hip
adductor brevis: location
medial com thigh, deeper
adductor brevis: origin
- body of pubis
- inferior pubic ramus
adductor brevis: insertion
- posterior surface of proximal femur
- linea aspera (upper 1/3)
adductor brevis: innervation
obturator n
adductor brevis: action
- adducts thigh at hip
- weak flexor at hip
adductor magnus: location
medial com thigh, deep
adductor magnus: origin
adductor part:
- ischiopubic ramus
hamstring part:
- ischial tuberosity
adductor magnus: insertion
adductor part:
- post surface of proximal femur, linea aspera, medial supracondylar line
hamstring part:
- adductor tubercle
adductor magnus: innervation
adductor part:
- obturator n
hamstring part:
- sciatic (tibial division)
adductor magnus: action
adducts (adductor part)
extends thigh (hamstring part) at hip
semitendinosus: location
post com thigh, deep
semitendinosus: origin
ischial tuberosity
semitendinosus: insertion
medial surface of proximal tibia
semitendinosus: innervation
sciatic n (tibial division)
semitendinosus: action
- extends thigh at hip
- flexes and medially rotates leg at knee
semimembranosus: location
post com thigh, deep
semimembranosus: origin
ischial tuberosity
semimembranosus: insertion
medial tibial condyle
semimembranosus: innervation
sciatic n (tibial division)
semimembranosus: action
- extends thigh at hip
- flexes and medially rotates leg at knee
biceps femoris: location
post com thigh, deep
biceps femoris: origin
long head:
- ischial tuberosity
short head:
- linea aspera
- lateral supracondylar line
biceps femoris: insertion
lateral aspect of head of fibula
biceps femoris: innervation
sciatic n:
- tibial division (long)
- common fibular division (short)
biceps femoris: action
- flexes leg
- laterally rotates knee
- extends thigh at hip
