Thigh Flashcards
Thigh is the region between the hip and knee containing the __ and___.
femur
patella
Sesamoid bone within the quadricep tendon.
patella
Thigh is covered by dense connective tissue called ________.
fascia lata
Thigh is divided into three compartments _________, _________, and _________. These are divided by intermuscular septa that arise from the fascia lata.
anterior
medial
posterior
The anterior compartment is separated from the posterior compartment by the ____ _____ ______.
lateral intermuscular system
The anterior compartment is separated from the medial compartment by the ___ ____ ____.
medial intermuscular system
Quadriceps Femoris: 4 muscles
- rectus femoris
- vastus lateralis
- vastus medialis
- vastus intermedius
rectus femoris: origin - insertion - innervation - function -
origin - AIIS
insertion - patella via quadricep tendon, continuing to tibial tuberosity via patellar ligament
innervation - femoral n.
function - 1. extend leg at knee 2. flexes thigh
vastus lateralis: origin - insertion - innervation - function -
origin - greater trochanter
insertion - patella via quadricep tendon, continuing to tibial tuberosity via patellar ligament
innervation - femoral n.
function - extends leg at knee
vastus medialis: origin - insertion - innervation - function -
origin -intertrochanteric line, medial lip of linea aspera
insertion - patella via quadricep tendon, continuing to tibial tuberosity via patellar ligament, patella and tibia via medial patellar retinacululm
innervation - femoral n.
function - extends leg at knee
vastus intermedius: origin - insertion - innervation - function -
origin - anterior & lateral shaft of femur
insertion - patella via quadricep tendon, continuing to tibial tuberosity via patellar ligament
innervation - femoral n.
function - extends leg at knee
sartorius: origin - insertion - innervation - function -
origin - ASIS
insertion - anteromedial surface of proximal tibia, contributes to pes anserinus tendon
innervation - femoral n.
function - 1. flexes thigh
- externally rotates thigh
- ABducts thigh
- flexes knee
- weakly internally rotates knee
pectineus: origin - insertion - innervation - function -
origin - superior ramus of pubis (pectineal line of pubis)
insertion - pectineal line of femur, interior to lesser trochanter of femur
innervation - femoral n.
function - 1. ADducts thigh
- flexes thigh
- internally rotates thigh
tensor fascia lata: *often considered a gluteal m.. origin - insertion - innervation - function -
origin - ASIS, anterior part of iliac crest
insertion - patella via quadricep tendon, continuing to tibial tuberosity via patellar ligament
innervation - superior gluteal nerve n.
function - 1. ABducts thigh
- internally rotates thigh
- flexes thigh
iliopsoas:
3 compartments
- psoas major
- iliacus
- psoas minor
psoas major: origin - insertion - innervation - function -
origin - sides & transverse processes of T12 & L vertebrae & associated intervertebral discs
insertion - lesser trochanter of femur
innervation - anterior rami of lumbar n.
function - acts with iliacus, flexes unfixed thigh, may initiate trunk flexion (sit ups), acts as postural stabilizer, helps maintain lumbar lordosis
iliacus: origin - insertion - innervation - function -
origin - iliac fossa
insertion - lesser trochanter of femur
innervation - femoral n.
function - acts with psoas major, flexes unfixed thigh, may initiate trunk flexion (sit ups), acts as postural stabilizer
ADdcuctor longus: origin - insertion - innervation - function -
origin - body of pubis
insertion - linea aspera (middle 1/3)
innervation - obturator n.
function - ADducts thigh
ADductor brevis: origin - insertion - innervation - function -
origin - body and inferior ramus of pubis
insertion - pectineal line of femur and proximal part of linea apera
innervation - obturator n.
function - ADducts thigh
ADductor magnus: HAMSTRING PART origin - insertion - innervation - function -
HAMSTRING PART origin - ischial tuberosity insertion - adductor tubercle innervation - tibial part of sciatic n. function - weakly extends thigh
Gracilis: origin - insertion - innervation - function -
origin - body & inferior ramus of pubis insertion - medial surface of proximal tibia btwn insertions of sartorius & semitendinous; contributes to pes anserinus tendon innervation - obturator nerve function - 1. ADducts thigh 2. flexes knee 3. weakly internally rotates leg at knee
Obturator Externus: deep to pectineus origin - insertion - innervation - function -
origin - external surface of obturator foramen & membrane
insertion - passes posterior to neck of femur & attaches to the trochanteric fossa
innervation - obturator n.
function - 1. external rotation of thigh
2. steadies head of femur in acetabulum
ADductor magnus: ADDUCTOR PART origin - insertion - innervation - function -
ADductor magnus:
ADDUCTOR PART
origin - inferior ramus of pubis, ramus of ischium
insertion - gluteal tuberosity, linea aspera, medial supracondylar line
innervation - obturator nerve
function - 1. ADducts thigh
2. weakly flexes thigh
Blood supply to medial compartment
- femoral a.
- perforating branches of deep femoral a.
- obturator a. (branch of internal iliac a.)
