29. Anterior and Medial Thigh Flashcards
Functions of anterior compartment of thigh?
Flex hip
Extend knee
Functions of medial compartment of thigh?
Adduct hip
Functions of posterior compartment of thigh?
Extend hip
Flex knee
Be able to label the bony features of the femur
SLIDE 4
Name the 4 muscles which flex the hip
Iliacus
Psoas major
Pectineus
Sartorius
Name the muscles that extend the knee
Quadriceps
Name the 4 muscles that make up the quadricep group
Rectus femoris
Vastus medialis
Vastus lateralis
Vastus intermedius
Origin of iliacus? (4)
Iliac crest
Iliac fossa
Ala of sacrum
Anterior sacroiliac ligament
Insertion of iliacus?
Psoas tendon
Lesser trochanter
Innervation of ilicus?
Femoral L2, L3
Function of iliacus?
Flex hip
Origin of psoas major?
T12 - L5 IV discs
Lumbar transverse processes
Insertion of psoas major?
Lesser trochanter
Innervation of psoas major?
Anterior rami L1 - L3
Function of psoas major?
Flex hip
Origin of pectineus?
Superior ramus of pubis
Insertion of pectineus?
Pectineal line of femur
Innervation of pectineus?
Femoral nerve L2, L3
Action of pectineus?
Adduct and flex hip
Assist with medial rotation
Origin of sartorius?
ASIS
Insertion of sartorius?
Superior part of medial surface of tibia
Innervation of sartorious?
Femoral L2, L3
Action of sartorious?
Flex
Abduct
Laterally rotate hip
Flex knee
Origin of rectus femoris?
AIIS
Ilium above acetabulm
Origin of vastus lateralis?
Greater trochanter
Lateral linea aspera
Origin of vastus medialis?
Intertrochanteric line
Medial linea aspera
Origin of vastis intermedialis?
Anterior and lateral shaft of femur
Insertion of the quad muscles?
Quadriceps tendon then tibial tuberosity via patellar ligament
Action of quads?
Extend knee
Rectus femoris also flexes hip
Innervation of quads?
Femoral L2, L3
What is the terminal cutaneous branch of the femoral nerve?
Saphenous nerve (supplies anteromedial knee, leg and foot)
Which muscles adduct the hip? (4)
Gracilis
Adductor longus
Adductor brevis
Adductor magnus
Origin of gracilis?
Body and inferior ramus of pubis
Insertion of gracilis?
Superior medial surface of tibia
Innervation of gracilis?
Obturator nerve L2, L3
Action of gracilis?
Adducts hip
Flexes knee
Origin of adductor longus?
Body of pubis
Insertion of adductor longus?
Middle 1/3rd of linea aspera
Innervation of adductor longus?
Obturator L2, L3, L4
Action of adductor longus?
Adducts thigh
Origin of adductor brevis?
Body and inferior ramus of pubis
Insertion of adductor brevis?
Pectineal line
Proximal linea aspera
Innervation of adductor brevis?
Obturator L2, L3, L4
Action of adductor brevis?
Adducts thigh
May assist flexion
Origin of adductor magnus?
Ischiopubic ramis
Ischial tuberosity
Insertion of adductor magnus?
Linea aspera
Medial supracondylar line
Adductor tubercle
Innervation of adductor magnus?
Obturator (L2, L3, L4)
Hamstring part - tibial division of sciatic nerve L4
Action of adductor magnus?
Adducts thigh (adductor part)
Extends thigh (hamstring part)
Origin of obturator externus?
Margins of obturator foramen
Obturator membrane
Insertion of obturator externus?
Trochanteric fossa
Innervation of obturator externus?
Obturator nerve L3, L4
Action of obturator externus?
Laterally rotates thigh
NOT adduction
What are the branches of the obturator nerve?
Anterior and posterior
Relative to adductor brevis
Describe the adductor canal?
Runs from apex of femoral triangle to adductor hiatus
Underneath the distal half of sartorius
What are the boundaries of the adductor canal?
Sartorius
Vastus medialis
Adductor longus
Which nerves and vessels run through the adductor canal?
Femoral vessels
Saphenous nerve
Where does the femoral artery become the popliteal artery?
Adductor hiatus
What is the largest branch of the femoral artery?
Profunda femoris
Name some branches of the profunda femoris?
3-4 perforating branches through adductor magnus
Medial and lateral circumflex branches
Which muscle does profunda femoris run deep to?
Adductor longus
Which artery does the femoral artery branch from?
External iliac
Which artery does the obturator artery branch from?
Internal iliac
What arteries make up the cruciate anastomosis? (4)
Inferior gluteal
Medial circumflex femoral
Lateral circumflex femoral
1st perforating branch
What are the branches of the obturator artery? And what do they supply?
Anterior - muscles of medial compartment
Posterior - muscles attached to the ischial tuberosity