HLSC 4011- ALL LE Lecture 7 Anterior and Medial Thigh

what are the functions of the lower extremity

support body weight, locomotion, maintain balance

where does the common iliac a branch from

aorta

what branches from the common iliac a

external and internal iliac a

at what landmark does the external iliac a turn into the femoral artery

inguinal ligament

what artery branches off the femoral artery

profunda femoris a

what branches off the profunda femoris a

lateral and medial circumflex femoral a

the lumbar plexus originates from where

ventral rami of L1-L4

the sacral plexus originates from where

ventral rami of L4-S4

what are the six branches of the lumbar plexus

ilioinguinal, iliohypogastric, genitofemoral, lateral femoral cutaneous, obturator, femoral

ilioinguinal n arises from where

L1

iliohypogastric n arises from where

L1

genitofemoral n arises from where

L1-L2

lateral femoral cutaneous n arises from where

L2-L3

obturator n arises from where

L2-L4

femoral n arises from where

L2-L4

describe the ilium and its relationship to the acetabulum

forms superior part of acetabulum

describe the ischium and its relationship to the acetabulum

forms posterolateral part of acetabulum

describe the pubis and its relationship to the acetabulum

forms anterior part of acetabulum

what are the three components of the acetabulum

acetabular fossa, acetabular notch, and lunate surface

what kind of joint is the hip joint

synovial, ball and socket

what two bony structures form the hip joint

head of femur and lunate surface of acetabulum

what is the function of the labrum in the hip joint

deepens socket

where is the transverse acetabular ligament and what is its function

inferior margin of acetabulum, runs over the acetabular notch to connect it

what are the capsular ligaments of the hip joint?

iliofemoral, pubofemoral, ischiofemoral

describe the iliofemoral ligament

is anterior and superior to joint, looks like a Y, connects AIIS to intertrochanteric line, tightens with hip EXT

what does the iliofemoral ligament prevent?

hyperextension

describe the pubofemoral ligament

is anterior and inferior to joint, connects iliopubic line to intertrochanteric line, tightens with hip ABD

what does the pubofemoral ligament prevent

hyperabduction

describe the ischiofemoral ligament

posterior, attaches ischium to greater trochanter, tightens with extension and medial rotation

what does the ischiofemoral ligament prevent

hyperextension and excessive medial rotation

what is the overall function of the capsular ligaments of the hip joint?

reinforce external surface of fibrous membrane and stabilize joint

what is the function of the ligamentum teres

holds head of femur into acetabulum

describe the fascia lata (NOT TENSOR FASCIA LATA)

deep fascia that forms a "stocking" covering over thigh muscles

how does the fascia lata continue past the thigh?

as deep fascia

the lateral thickening of the fascia lata is called what

iliotibial tract

where does the IT band insert

gerdy's tubercle

what is the function of the intermuscular septa

divides thigh muscles into A/M/P compartments

what is the functioning of the saphenous opening

allows great saphenous v to pass from superficial thru deep fascia to anastomose with femoral v

origin of psoas major

TP L1-L5

insertion of psoas major

lesser trochanter of femur

innervation of psoas major

ventral rami L2-L4

action of psoas major

hip flexion

origin of iliacus

iliac fossa, iliac crest, sacrum

insertion of iliacus

lesser trochanter of femur

innervation of iliacus

femoral n

action of iliacus

hip flexion

origin of psoas minor

bodies of T12-L1

insertion of psoas minor

pectineal line, ilium

innervation of psoas minor

ventral rami of L1

action of psoas minor

trunk flexion

origin of sartorius

ASIS

insertion of sartorius

prox medial surface of tibial shaft, capsule of knee joint (part of pes anserine)

innervation of sartorius

femoral n

action of sartorius

hip lateral rotation, abd and flexion, knee flexion and medial rotation

origin of rectus femoris

AIIS, acetabulum, capsule of hip joint

insertion of rectus femoris

base of patella

innervation of rectus femoris

femoral n

action of rectus femoris

knee extension, hip flexion

origin of vastus lateralis

lateral lip of linea aspera, greater trochanter, gluteal tuberosity

insertion of vastus lateralis

patella

innervation of vastus lateralis

femoral n

action of vastus lateralis

knee extension

origin of vastus medialis

intertrochanteric line, medial lip of linea aspera

insertion of vastus medialis

patella

innervation of vastus medialis

femoral n

action of vastus medialis

knee extension

origin of vastus intermedius

anterior and lateral shaft of upper shaft of femur

insertion of vastus intermedius

patella

innervation of vastus intermedius

femoral n

action of vastus intermedius

knee extension

origin of gracillis

inferior pubic ramus, ischial ramus

insertion of gracillis

medial surface of tibial shaft, pes anserine, deep fascia of leg

innervation of gracillis

obturator n

action of gracillis

hip adduction, knee flexion

origin of pectineus

pectineal line of pubis

insertion of pectineus

pectineal line of femur

innervation of pectineus

femoral n, obturator n

action of pectineus

hip adduction

origin of adductor longus

pubis where crest and symphysis meet

insertion of adductor longus

middle 1/3 of linea aspera

innervation of adductor longus

obturator n

action of adductor longus

hip adduction and flexion

origin of adductor brevis

body and inferior ramus of pubis

insertion of adductor brevis

line from lesser trochanter to proximal 1/3 of medial lip of linea aspera

innervation of adductor brevis

obturator n

action of adductor brevis

hip adduction, flexion

origin of adductor magnus

inferior pubic ramus, inferior ischial ramus, ischial tuberosity

insertion of adductor magnus

linea aspera and adductor tubercle of femur

innervation of adductor magnus (superior and middle fibers)

obturator

innervation of adductor magnus (inferior fibers/hamstring portion)

sciatic n (t)

action of adductor magnus

Hip adduction and extension

origin of obturator externus

pubic ramus, ischial ramus, margins of obturator foramen and obturator membrane

insertion of obturator externus

trochanteric fossa of femur

innervation of obturator externus

obturator n

action of obturator externus

lateral rotation of hip