Anterior & Medial Thigh Flashcards
What is the name of the deficit in the fascia lata where the great saphenous vein drains into the femoral vein?
Saphenous hiatus
The great saphenous vein is located _____ in the thigh
Medially
The lesser saphenous vein is located _____ in the leg
Posteriorly
The saphenous nerve runs with the _____
Great saphenous vein
Branches of the _____ run with the lesser saphenous vein
Sural nerve
What forms the iliotibial tract/band?
Aponeurosis of gluteus Maximus & tensor fascia lata
What are the 2 specializations of the fascia lata (deep fascia)?
Iliotibial tract/band
Saphenous opening/hiatus
Describe the borders of the femoral triangle
- superior/base = inguinal ligament
- medial = adductor longus
- lateral = sartorius
- floor = pectineus (med) & iliopsoas (lat)
What are the contents of the femoral triangle?
femoral n, a, v, and lymph (NAVL)
What structures are within the femoral sheath that exits the femoral triangle?
Femoral a & v, lymph
Name the contents of the adductor canal
Femoral a
Femoral v
N to vastus medialis
Saphenous n
Where do structures in the adductor hiatus end up?
Femoral a & v travel posteriorly
Saphenous n stays anterior
N to vastus medialis ends in the muscle
Femoral a and v are continuations of the ____ and ____
External iliac a & v
Name the branches of the femoral artery
- profunda femoris a
- medial femoral circumflex a
- lateral femoral circumflex a
- descending genicular a
Name the muscles of the iliopsoas group
Psoas major
Psoas minor
Iliacus
Name the 4 quadriceps muscles
Rectus femoris
Vastus medialis
Vastus intermedius
Vastus lateralis
Origin & insertion of Psoas major
O: T12-L5 vertebrae & IVDs, TPs of L1-L5
I: with iliacus into lesser trochanter
Innervation of Psoas major
L1-L3 ventral primary rami
Action of Psoas major
Flex thigh at hip
Origin & insertion of Psoas minor
O: T12,L1 vertebrae & IVD
I: pectineal line, iliopectineal eminence
Innervation of Psoas minor
Branch of L1
Action of Psoas minor
Assist Psoas major
Origin & insertion of iliacus
O: iliac fossa (as tendon of Psoas major passes over iliacus, tendons fuse forming iliopsoas)
I: lesser trochanter
Innervation of iliacus
Femoral n
Action of iliacus
Flex thigh at hip
Origin & insertion of sartorius
O: anterior superior iliac spine
I: superior part of medial surface of tibia
Action of sartorius
- flex, abduct, laterally rotate thigh at the hip
- flex & medially rotate leg at the knee
What forms the pes anserinus complex?
Tendons of sartorius, gracilis, semitendinosus all have distal attachments alongside each other at the Superomedial tibia
What is the function of the pes anserinus complex?
Postural stabilization
What is the bony insertion of quadriceps femoris?
All form the quadriceps tendon that envelops the patella and inserts at the tibial tuberosity as the patellar tendon
Innervation of quadriceps femoris
Femoral nerve
Common action of quadriceps femoris
Extend the knee
Rectus femoris will initiate ____
Thigh flexion
Origin of rectus femoris
straight head: anterior inferior iliac spine
reflected head: rim of acetabulum
Origin of vastus medialis
O: medial lip of linea aspera & intertrochanteric line of femur
Where can the fleshy part of vastus medialis be palpated?
Superimedially to patella
What happens with weakness of the vastus medialis muscle?
Allows patella to track laterally during knee extension causing bony contact with lateral femoral condyle
Origin of vastus lateralis
Greater trochanter & lateral lip of linea aspera
Origin of vastus intermedius
Anterior & lateral surfaces of shaft of femur
Where is articularis genu located?
Deep to vastus intermedius, sometimes blended with it
Origin & insertion of articularis genu
O: distal femoral shaft
I: synovial joint capsule of knee
Innervation of articularis genu
Femoral nerve
Action of articularis genu
Retract synovial capsule to prevent pinching during extension
General action of medial femoral muscle group
Adduct the thigh (with 1 exception)
General innervation of medial femoral muscle group
Obturator nerve (2 exceptions)
Innervation of adductor magnus
Posterior division of obturator n
Tibial division of sciatic n
Adductor longus, adductor brevis and gracilis are innervated by the ____
Anterior division of obturator n
Origin & insertion of pectineus
O: pectineal line of pubic bone
I: pectineal line of femur
Action of pectineus
Hip adduction & flexion
Innervation of pectineus
Femoral nerve
Origin of adductor longus, adductor brevis, & gracilis
Ramus & body of pubis bone
Insertion of adductor longus
Middle 1/3 of linea aspera
Insertion of adductor brevis
Pectineal line of femur & proximal linea aspera
Insertion of gracilis
Superomedial surface of tibia
Action of adductor brevis & longus
Adduct the thigh
Action of gracilis
Adduct thigh & medially rotate the knee
Origin & insertion of adductor part of adductor magnus
O: ischiopubic ramus
I: gluteal tuberosity, linea aspera, medial supracondylar line
Innervation of adductor part of adductor magnus
Posterior branch of obturator nerve
Origin & insertion of hamstring part of adductor magnus
O: ischial tuberosity
I: adductor tubercle
Innervation of hamstring part of adductor Magnus
Tibial division of sciatic nerve
____ is the exit passage from the adductor canal
Adductor hiatus
Origin & insertion of obturator externus
O: exterior margin of obturator foramen & membrane
I: trochanteric fossa
Innervation of obturator externus
Posterior division of obturator nerve
Action of obturator externus
Lateral rotation of thigh
The anterior branch of the obturator nerve lies between ____ and ____
Adductor longus & brevis
The posterior branch of the obturator nerve lies superficial to ____ and deep to ____
Obturator externus
Adductor brevis
