Anterior and Medial Thigh Muscles Flashcards
Pectineus insertion
Pectineal line of femur, just inferior to lesser trochanter
Pectineus origin
Superior ramus of pubis
Pectineus innervation
Femoral nerve (L2, L3) May receive branch from obturator nerve
Pectineus action
Adducts and flexes hip joint
Assists with medial rotation of hip joint
Sartorius origin
Anterior superior iliac spine and superior part of notch inferior to it
Sartorius insertion
Superior part of medial surface of tibia
Sartorius innervation
Femoral nerve (L2, L3)
Sartorius action
Flexes, abducts and laterally rotates hip joint, flexes knee joint
Psoas major origin
Sides of t12-l4 vertebrae and discs between them, transverse processes of all lumbar vertebrae
Psoas major insertion
Lesser trochanter of femur
Psoas major innervation
Anterior rami of lumbar nerves
L1, L2, L3
Psoas major action
Acting conjointly in flexing hip joint and in stabilizing the joint, psoas major is also a postural muscles that helps control deviation if the trunk and is active during standing
Iliacus origin
Iliac crest, iliac fossa, ala of sacrum and anterior sacroiliac ligaments
Iliacus insertion
Tendon of psoas major, lesser trochanter and femur distal to it
Iliacus innervation
Femoral nerve
L2, L3
Iliacus action
Acts with psoas major to flex and stabilize hip joint
Rectus femoris origin
Anterior inferior iliac spine and ilium superior to acetabulum
Rectus femoris insertion
Via common tendinous (quadriceps tendon) and independent attachments to base of patella, indirectly via patellar ligament to tibial tuberosity,vast us medial is and lateral is also attach to tibia and patella via aponeuroses (medial and lateral patellar retinacula)
Rectus femoris innervation
Femoral nerve
L2, l3, l4
Rectus femoris action
Extends knee joint
Also stabilizes hip joint and helps ilio psoas flex hip joint