Anterior and Medial Thigh Flashcards
cutaneous nerves of anterior and medial thigh (7)
- lateral cutaneous branch of subcostal nerve
- femoral branches of gentiofemoral n.
- iliolinguinal n.
- lateral femoral cutaneous n.
- anterior cutaneous branches of femoral n.
- cutaneous branch of obturator n.
- saphenous n.
muscles of the anterior thigh
iliopsoas
sartorius
quadriceps femoris
tensor fascia late Ilocated in anterior thigh but innervated by gluteal region)
iliopsoas muscle
function
innervation of three parts
chief flexor of thigh, stabilizes pelvis
iliacus: femoral nerve
psoas major: L1-L3 ventral rami
psoas minor: L1-L2 ventral rami
iliopectineal bursa is the common site for which injury
groin pulls
sartorius m.
most superficial, longest muscle
innervation: femoral nerve
function: flex, abduct, laterally rotate thigh, flex leg
common insertion for three muscles innervated by three separate nerves
pes anserinus
pes anserinus is composed of which three muscles
sartorius tendon
gracilis tendon
semitendinosus
bursa of pes anserinus
anserine bursa, common point of inflammation and injury from overuse
this is common in athletes
quadriceps foramis
innervation: femoral nerve (L2-L4)
function: vast extends leg, rectus extend leg and flexes thigh
Four muscles of quadriceps foramis
vastus lateralis
rectus femoris
vastus medialis
Vastus intermedialis
as the quadriceps femoris continues inferiorly, it becomes
ligamentum patella
adductors of the thigh can be found on which part
medially
muscles of the medial thigh (6)
pectineus adductor brevis gracilis adductor hiatus adductor longus adductor magnus
pectineus muscle
attachments: to pecten line of pubis and pectineal line of femur
innervation: femoral nerve
functions: adduct and flex thigh
adductor longus
attachments: body of pubis and lines aspera
innervation: obturator nerve
function: adducts and flexes thigh
gracilis
long strap like (only adductor to cross knee)
attachment: pubis and body of inferior ramus, superior medial surface
innervation: obturator nerve
functions: adduct thigh, flex and medially rotate leg
adductor brevis
lies deep to pectinous and adductor longus
attachments: pubis body and inferior ramus, linea aspera
innervation: obturator nerve
functions: adducts and flexes thigh
groin pull
effects adductors of the thigh (medial)
caused by strain, stretching, and tearing of proximal attachments of thigh adductors and flexor muscles
adductor magnus
largest adductor
two parts:
- adductor portion
- hamstring portion
hamstring portion of adductor magnus
tibial division of sciatic nerve
adducts and extends thigh
adductor portion of adductor magnus
obturator nerve
adducts and flexes thigh
femoral triangle is bordered by
sartorius m
adductor longus m
inguinal ligament
floor border of femoral triangle, roof
pectins and iliopsoas muscle
roof: fascia lata
contents of femoral triangle (NAVEL)
femoral n. (+branches) femoral artery (+ branches) femoral vein (+tributaries) femoral canal (empty space with lymph nodes)
femoral sheath allows the vessels
to glide smoothly deep to inguinal ligament during hip joint movement
surrounds the vessels and canal
three compartments of femoral sheath
divided by two vertical septa
- lateral (femoral artery)
- intermediate (femoral vein)
- medial or femoral canal
NO FEMORAL NERVE
femoral canal
contains lymph vessels, connective tissue, and fat
allows femoral vein to expand during increased venous return
extends distally to saphenous opening
proximal opening of the femoral canal is AKA
femoral ring
small opening covers by parietal peritoneum
femoral hernia
occurs where the small intestine protrudes into femoral canal through femoral ring
two groups of lymph nodes in thigh
proximal and distal grow (horizontal and vertical)
passes deep to inguinal ligament and ran into external iliac lymph nodes
deep inguinal lymph nodes
1-3 nodes along medial side of femoral vein
inside femoral canal of femoral sheath
drain external iliac lymph nodes
femoral nerve
largest branch of lumbar plexus
enters thigh lateral to inguinal ligament, femoral vessels
what is supplied by femoral nerve
anterior thigh muscles, hip and knee joints
iliac
sartorius
quadriceps femoris
pectinous
meralgia parenthetic
compression of lateral femoral cutaneous nerve as it passes under inguinal ligament and causes pain along lateral thigh
caused by anterior hip dislocation
saphenous nerve
cutaneous branch
supplies skin of anterior and medial knee and leg, medial foot
femoral artery
chief arterial supply of lower limb
gives rise to descending genicular artery (articular and saphenous branches)
