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.)
The fascial tunnel running from the apex of the femoral triangle to the adductor hiatus (in tendon of adductor magnus)
adductor canal
Boundaries of adductor canal
- posterior: adductor longus & magnus
- medial (roof): sartorius
- anterolateral: vastus medialis
