15: Musculoneurovascular systems of anterior and posterior compartments thigh Flashcards
Gluteus maximus and tensor fasciae latae insert into
Iliotibial tract
Superficial thigh is covered by
Fascia lata
Thickened fascia lata on lateral thigh is called
iliotibial tract
Main innervation of anterior compartment
femoral nerve
Main innervation of posterior compartment
sciatic nerve
Main innervation of lateral compartment
obturator nerve
Muscles of anterior compartment
Pectineus
Psoas major
Iliacus
Sartorius
Rectus femoris
Vastus lateralis
Vastus medialis
Vastus intermedialis
Muscles of posterior compartment
Semitendinosus
semimembranosus
Biceps femoris
Origin of pectineus
superior pubic ramus
Insertion of pectineus
pectineal line of femur, inferior to lesser trochanter
Innervation of pectineus
Femoral nerve
sometimes branch from obturator
Action of pectineus
Adducts, flexes and externally rotates hip
Origin of psoas major
lateral part of T12-L5 vertebrae
Insertion of psoas major
Lesser trochanter of femur
Innervation of psoas major
Direct branches from L1-3 inferior rami
Actions of psoas major
flexes thigh at hip
lateral rotation at hip
stabilisation of leg when standing
maintenance of posture
Actions of iliacus
flexes thigh at hip
lateral rotation at hip
stabilisation of leg when standing
maintenance of posture
Origin of iliacus
Iliac fossa and crest
Ala of sacrum
Sacroiliac ligaments
Insertion of iliacus
lesser trochanter of femur
Innervation of iliacus
femoral nerve
Origin of sartorius
ASIS
Insertion of sartorius
medial to tibial tuberosity
Innervation of sartorius
femoral nerve
Actions of sartorius
flexes, abducts and externally rotates thigh
flexes leg
Where is the reflective head of rectus femoris
lateral