Thigh Flashcards
What muscles are in the anterior thigh?
Articularis genus
Illiopsoas
Sartorius
Rectus femoris, vastus intermedius, lateralis and medialis
What muscles are anterior thigh flexors?
Articularis genus
Iliopsoas
Sartorius
What muscles are anterior thigh extensors?
Rectus femoris
Vastus intermedius
Vastus lateralis
Vastus medialis
Of all the anterior thigh muscles, which one is not supplied by the femoral nerve?
Psoas major (Iliopsoas)
What nerve is the psoas major supplied by?
Ventral rami of first lumbar nerve
Which muscles of the anterior thigh flexors are not supplied by the femoral artery?
Iliopsoas
What artery is the iliopsoas supplied by?
Illiacus - iliac branches of iliolumbar artery
Psoas major - lumbar braches of iliolumbar artery
What do all 4 quadriceps femoris muscles do?
Extend the leg at the knee joint
Rectus femoris also flexes the thigh at the hip joint
What is the action of the Sartorius?
Abducts
Laterally rotates the hip
Flexes thigh
Flexes knee
What is the action of the Illiacus?
Flexes thigh at hips
Stabilises the hip joint
What is the function of the Psoas major?
Flexes hip
What is the action of the Articularus genus?
Pulls suprapatellar bursa superiorly
Extension of knee
What are the attachments of the Sartorius?
ASIS to medial tibia
What are the attachments of the Articularis genus?
Distal femur to supra patellar bursa?
What are the attachments of the Illiacus?
Iliac crest to lesser trochanter of femur
What are the attachments of the Psoas major?
Lumbar vertebrae (T12 - L5) to lesser trochanter of femur
What are the attachments of the Rectus femoris?
AIIS to tibia
What are the attachments of the Vastus intermedius?
Body of femur to base of patella and tibial tuberosity (via patellar ligament)
What are the attachments of the Vastus lateralis?
Greater trochanter to base of patella and tibial tuberosity (via patellar ligament)
What are the attachments of the Vastus medialis?
Intertrochanteric line to base of patella and tibial tuberosity (via patellar ligament)
Where do all vastus muscles attach to inferiorly?
Base of patella and tibial tuberosity (via patellar ligament)
Name the muscles of the medial thigh
Adductor brevis Adductor longs Adductor magnus Gracillis Obturator externus Pectineus
What nerve are most of these muscles innervated by?
Obturator nerve
What nerve is the adductor magnus supplied by?
Obturator nerve
Sciatic nerve - hamstring
What nerve is the pectineus supplied by?
Obturator nerve
Femoral nerve
What is the action of medial thigh muscles?
Adduct thigh at the hip
What is the action of the adductor magnus?
Adducts thigh
Flexes thigh
Extends thigh - hamstring
What is the action of the gracilis?
Adducts thigh
Flexes and medially rotates the leg
What is the action of the obturator externus?
Adducts thigh
Laterally rotates thigh
Stabilises HOF in acetabulum
What is the action of the pectineus?
Adducts thigh
Flexes thigh
What are the attachments of the adductor brevis?
Inferior pubic ramus to linea aspera of femur
What are the attachments of the adductor longus?
Inferior pubic ramus to middle 1/3rd of linea aspera of femur
What are the attachments of the adductor magnus?
Inferior pubic ramus to gluteal tuberosity
Ischial tuberosity to adductor tubercle of femur - hamstring
What are the attachments of the gracilis?
Inferior pubic ramus to tibia
What are the attachments of the obturator externus?
Obturator foramen to trochanteric fossa of femur
What are the attachments of the pectineus?
Superior pubic rami to pectineal line of femur
What is the arterial supply to the medial muscles?
Profundal femoris
Medial circumflex
Femoral
Obturator (all except gracilis and longus)
Name the posterior thigh muscles
Biceps femoris
Semimebranous
Semitendinosus
What nerve innervates the posterior thigh muscles?
Sciatic nerve
What is the arterial supply to the posterior thigh muscles?
Profundal femoris
Medial circumflex
Femoral
What are the attachments of the semimembranosus?
Ischial tuberosity to posterior of medial condyle of tibia
What are the attachments of the semitendinosus?
Ischial tuberosity to superior part of medial surface of tibia
What are the attachments of the biceps femoris?
Ischial tuberosity to lateral side of head of fibula - long head
Linea aspera to tibia - short head
What is the action of the semi muscles?
Flexes leg
Extends thigh
What is the action of the biceps femoris?
Flexes leg
Laterally rotates leg
Extends thigh at hip
What do all the quadratus femoris muscles attach to inferiorly?
Base of patella and tibial tuberosity via patella ligament