Anterior and Medial Thigh Flashcards
The deep fascia of the thigh is called what?
fascia lata
Laterally, in the thigh, there is a thickening of the fascia lata called the ____ tract, which extends from the iliac tubercle to the patella and proximal tibia
iliotibial
What is the main action of the anterior compartment?
extension of the leg at knee joint; flexion of thigh at hip joint
What is the innervation of the anterior compartment?
femoral nerve (L2-L4)
What is the blood supply of the anterior compartment?
femoral artery and perforating branches of the deep artery of the thigh
What is the main action, innervation, and blood supply of the medial compartment?
main action: adduction of the thigh
innervation: obturator nerve
blood supply: obturator artery
What is the main action, innervation, and blood supply of the posterior compartment?
main action: flexion of leg at knee joint; extension of thigh at hip joint
innervation: sciatic nerve
blood supply: deep artery of the thigh
This muscle is the largest muscle on the anterior thigh. Its four-headed whose heads arise from different origins on the hip and thigh, but insert in a common quadriceps tendon on the tibial tuberosity
quadriceps femoris
What is the action and innervation of quadriceps femoris?
main extensor of leg; innervated by femoral nerve (L2-4)
Which is the most superficial of the quadriceps muscles, and the only one to have an attachment to the ilium?
rectus femoris
What is the origin and action of rectus femurs?
origin: ASIS and a groove above acetabulum
action: flexion of thigh at hip, extension of leg at knee
Which is the largest and most lateral of the quadriceps muscles?
vastus lateralis
What is the origin of vastus lateralis?
greater trochanter and lateral lip of linea aspera of femur
What are the origins of vastus medialis and vastus intermedius?
vastus medialis: medial lip of the linea aspera, medial part of the intertrochanteric line
vastus intermedius: anterior surface of the shaft of the femur proximally
This is a long thin muscle that wraps obliquely around the anterior aspect of the thigh. It lies within its own fascial sheath within the anterior compartment.
sartorius
The sartorius is the longest muscle in the body. True or false?
true
The sartorius forms the inferior border of the ____ triangle
femoral
What is the origin, insertion, action, and innervation of sartorius?
origin: ASIS
insertion: superior medial tibia by the pes anserinus tendon
action: flexion, abduction, lateral rotation of thigh at hip; flexion of leg at knee (crossing legs)
innervation: femoral nerve (L2-L3)
This muscle is formed by the convergence of two muscles of the posterior abdominal wall, posts major and iliacus. They joint together to form a thick tendon that inserts in the anterior thigh
iliopsoas
What is Psoas major’s origin and innervation?
origin: transverse processes, intervertebral joints, and adjoining bodies of TXII to LV
innervation: direct vental rami of L2-L3
What is the origin and innervation of iliacus?
origin: iliac fossa
innervation: femoral nerve
What is the insertion and action of Iliopsoas?
insertion: lesser trochanter of femur
action: flexion of thigh at hip joint
The femoral nerve origin is from the ____ plexus on the on the posterior abdominal wall and enters the femoral triangle by pushing under the ____ ligament.
lumbar (L2-L4); inguinal
The inguinal ligament runs from the ___ tubercle to the ASIS
pubic
The femoral nerve supplies what two muscles before entering into femoral triangle?
iliacus and pectineus muscles
The femoral nerve divides into anterior and posterior branches to supply skin on the anterior of the thigh and knee via ___ ____ branches an skin on the medial side of the leg and foot via the ____ ___ nerve
anterior cutaneous; saphenous
This is the most medial muscle of the medial compartment of the thigh. It is long and slender
gracilis
What is the origin, insertion, action, and innervation of gracilis?
origin: body and inferior rams of pubis proximally
insertion: superior medial tibia by the peso anserinus tendon distally
action: adduction, flexion, and medial rotation of the thigh, flexion of the knee
innervation: obturator nerve (L2-L3)
What is the origin, insertion, action, and innervation of pectineus?
origin: pectineal line of the pubis
insertion: pectineal line of the femur
action: adducts, flexes, and medially rotates thigh
innervation: femoral nerve (L2-L3), may receive a branch from obturator nerve
What is the origin, insertion, action, and innervation of adductor longus?
origin: body of pubis inferior to pubic crest
insertion: middle third of the linea aspera of the femur distally
action: adducts thigh
innervation: anterior division of obturator nerve (L2-L4)