Anterior and Medial thigh Session 31 Flashcards
what is the action of the anterior thigh muscles on the hip joint
flex thigh at hip joint
what is the action of the medial thigh muscles on the hip joint
adduct the thigh at the hip joint
what is the deep fascia of the thigh called and what is its structure (hint: not between compartments)
facia lata
surrounds the thigh like a sleeve
what is the iliotibial band, what does it attach to and what is this important for?
faschial continuation of tensor fascia lata
attaches to lateral aspect of proximal tibia
important to stabilise knee joint
where does the intermuscular septa extend from and to and what does it do
extends from linea aspera to fascia lata
separates thigh into its anterior, medial and posterior compartments
what is the action of the anterior thigh muscles on the knee joint
extend the leg at the knee joint
what is the innervation of the anterior compartment muscles and what r its spinal roots
femoral nerve L2-L4
what r the 7 muscles of the anterior compartment
sartorius
iliopsoas
pectineus
4 x quadriceps femoris
what r the 4 quadricep femoris muscles
rectus femoris
vastus lateralis
vastus medialis
vastus intermedius
what muscle forms the bulk of the anterior thigh
quadriceps femoris
what muscle is the prime extensor of the knee
quadriceps femoris
what is the insertion of the quadriceps femoris muscles and how do all the muscles insert
converge onto quadriceps tendon
this tendon runs over the patella to insert onto the tibial tuberosity via the patellar ligament
where is rectus femoris, its attachment and extra action
midline of anterior thigh
attached to ASIS
flexion of the hip (because it crosses the hip)
where is vastus lateralis and its attachment
lies lateral to rectus femoris
attached to linea aspera
what and where is the linea aspera
long ridge on posterior aspect of femoral shaft
where is vastus medialis and its attachment
medial to rectus femoris
attached to linea aspera
where is vastus intermedius and its attachment
deep to rectus femoris
attached to anterior aspect of femoral shaft
what is the location of sartorius and where does it run
lies in anterior thigh and runs medially
what is the attachment and insertion of sartorius
attaches proximally at ASIS
inserts onto medial aspect of proximal tibia
actions of sartorius and what is important about its actions
hint: open the gate
flexes and laterally rotates the hip joint
flex the knee
not a prime mover- only contributes to these movements
location of illiopsoas
proximal in anterior thigh
action of illiopsoas
prime flexor of hip joint
insertion and attachment of iliopsoas
psoas major and iliacus converge via a common tendon and insert onto the lesser trochanter of the femur
what forms a superficial triangle in the anterior thigh
tensor fascia latae and sartorius
where does pectineous lie
in proximal anterior thigh
medial to iliopsoas
what is the origin and insertion of pectineus
origin= superior pubic ramus
insertion inferior to lesser trochanter on femur
what innervates the medial thigh muscles and spinal roots of this
obturator nerve L2-L4
what r the 5 muscles of the medial compartment
adductor brevis adductor longus adductor magnus gracilis obturator externus
what is the general action of medial compartment of thigh muscles
adductors of hip
why r the MIDDLE compartment muscles important for normal gait
help draw the leg back towards to the midline during walking
what is the origin and insertion of the adductor brevis and longus
origin= pubic bone attachment= linea aspera
what is the location of adductor brevis in relation to adductor longus
adductor brevis lies deep to longus
where is the obturator nerve found
between adductor brevis and longus
what r the two parts of the adductor magnus called
adductor part and hamstring part
what is the origin and insertion and innervation of the adductor part of the adductor magnus
origin= inferior pubic ramus
insertion= linea aspera
obturator nerve
what is the adductor hiatus
gap betwen the distal attachments of the two parts of adductor magnus
what travels through the adductor hiatus
femoral artery and vein
attachment, insertion and actions of gracilis. is it a prime mover?- acronym is DUFF
pubic bone
medial aspect of tibia
weak adductor and flexor of hip, weak flexor of knee
not a prime mover
attachment, insertion and function of obturator externus
external surface of obturator membrane
inserts onto femur near greater trochanter
stabilises and laterally rotates hip joint
what is the femoral artery a continuation of
external iliac artery
what is the branch that comes of the femoral artery called and where does it go and what does it innervate
profunda femoris
travels deep into thigh
supplies thigh
how does femoral artery enter anterior thigh
travels deep to inguinal ligament
enters anterior thigh proximally
what is the path of the femoral artery after the profunda femoris branches off and what happens to it?
continues distally to traverse the adductor hiatus
enters the distal part of posterior thigh called the popliteal fossa
here it becomes the popliteal artery
what is the obturator artery a branch of
internal iliac artery
what is the path of the obturator artery
travels through obturator canal into medial compartment of thigh
anastomoses with branches from femoral artery
what is the path of the obturator vein
travels through obturator canal and joins internal iliac vein in the pelvis
what is the path of the femoral vein
travels under inguinal ligament and is continuous with external iliac vein
what is the position of the femoral vein in relation to the femoral artery
vein is medial to artery
what is the path of the femoral nerve
travels deep to inguinal ligament
enters proximal anterior thigh lateral to femoral artery
what is the innervation of the femoral nerve and its main branch’s innervation
femoral: anterior thigh muscles
saphenous nerve: sensory branch that innervates skin over the leg
what is the path of the obturator nerve
travels along the lateral wall of the pelvis and exits through the obturator canal
emerges onto superficial surface of adductor brevis
what is the innervation of obturator nerve
innervates the medial compartment muscles and skin over medial thigh
what r the 3 borders of the femoral triangle
lateral: medial border of sartorius
medial: lateral border of adductor longus
superior: inguinal ligament
what is the apex and floor of the femoral triangle
apex: where sartorius and adductor longus meet
floor: made up of iliopsoas laterally and pectineus medially
what r the 4 important contents of the femoral triangle
femoral artery
femoral vein
great saphenous vein (joins femoral vein)
femoral nerve