Thigh Flashcards
superficial fascia
located in between skin and deep fascia
Deep fascia components
Fascia lata and iliotibial band (ITB)
Fascia lata
actual deep fascia in thigh
ITB
Thickening of fascia lata
Contents of fascia
cutaneous nerves, and superficial veins
Great saphenous vein
largest superficial vein in lower extremity (LE)
Great saphenous vein course
Ascends along medial aspect of LE to drain into deep femoral vein in anterior thigh
How are compartments in thigh created?
fascial invaginations (intermuscular septa) from deep aspect of fascia lata
Compartments in thigh
Anterior, posterior, and medial compartments
Muscles in anterior thigh
Psoas major, iliacus, quadriceps femoris, sartorius
Psoas major AIM
A: lumbar vertebra to lesser trochanter
I: upper lumbar spinal nerves (L1-L3)
M: hip flexor
Iliacus AIM
A: iliac fossa to lesser trochanter
I: Femoral n.
M: hip flexor
Muscles in quadriceps femoris
Rectus femoris and vastus medialis, lateralis, and intermedius
Rectus femoris A and M
A: anterior inferior iliac spine to tibial tuberosity (crosses hip joint, others don’t)
M: knee extension and hip flexion
Vastus medialis A
intertrochanteric line and linea aspera to tibial tuberosity
Vastus lateralis A
greater trochanter and linea aspera to tibial tuberosity
Vastus intermedius A
anterior femoral shaft to tibial tuberosity
Do all muscles in quadriceps femoris cross knee joint?
YES
Quadriceps femoris I and M
I: Femoral nerve
M: knee extension
Sartorius AIM
A: ASIS to proximal tibia (medial)
I: femoral nerve
M: hip flexion, abduction and external/lateral rotation (ER/LR) and knee flexion
Muscles in medial compartment of thigh
pectineus, adductor longus, adductor brevis, gracilis, and adductor magnus
pectineus AIM
A: pubic bone to pectineal line
I: femoral and obturator nerves
M: hip adduction
Adductor longus AIM
A: pubic bone to linea aspera
I: Obturator
M: hip adduction
Adductor brevis AIM
A: pubic bone to linea aspera
I: Obturator
M: hip adduction
Location of adductor brevis
deep to adductor longus and pectineus
Gracilis AIM
A: pubic bone passing posterior axis of knee joint to proximal tibia (medial)
I: obturator
M: hip adduction and knee flexion
Adductor magnus AIM
A: Pelvis to linea aspera and adductor tubercle
I: obturator and tibial nerves
M: hip adduction
Which is the largest adductor muscle?
Adductor magnus
Where do vessels pass through in thigh?
pass through adductor hiatus created by the attachment adductor magnus posteriorly
Muscles in posterior compartment of thigh
Semitendinosus, semimembranosus, biceps femoris (long head), biceps femoris (short head)
Semitendinosus AIM
A: ischial tuberosity to proximal tibia (medial and most superficial)
I: Tibial nerve
M: Hip extension, knee flexion
Semimembranosus AIM
A: Ischial tuberosity to proximal tibia (medial tibial condyle)
I: Tibial nerve
M: hip extension, knee flexion
Biceps femoris long head AIM
A: ischial tuberosity then crosses knee to fibular head
I: tibial nerve
M: hip extension, knee flexion
Biceps femoris short head AIM
A: linea aspera then crosses knee to fibular head
I: common fibular nerve
M: knee flexion
Which muscles in posterior compartment attach to hip?
Semitendinosus, semimembranosus, and biceps femoris long head
femoral nerve enters ____ and provides what kind of innervation where?
enters LE by passing deep to inguinal ligament, motor to anterior compartment of thigh
No motor innervation below the knee, only sensory branch
obturator nerve enters ____ and provides what kind of innervation where?
enters LE by passing through obturator canal, motor branches to medial thigh compartment
No motor innervation below the knee
sciatic nerve
passes through the glueal region
2 nerves wrapped into a bundle with CT
Does sciatic nerve innervate gluteal muscles?
No
Nerves within sciatic nerve
Tibial and common fibular nerves
Tibial nerve
innervates semimembranosus, semitendinosus, and biceps femoris long head
Common fibular nerve
innervates biceps femoris short head
Do tibial and common fibular nerves pass into leg?
YES
What is femoral artery and is it major or minor for thigh?
continuation of external iliac artery
Major source of blood supply to thigh
What is obturator and is it major of minor for thigh?
branch of internal iliac artery
Minor source of blood to thigh
