Thigh muscles attachments Flashcards
What are 3 compartments that make up the thigh muscles?
- anterior
- medial
- posterior
What are the muscles in the anterior compartment of the thigh? (7)
- psoas major
- iliacus
- vastus medialis
- vastus intermedius
- vastus lateralis
- rectus femoris
- sartorius
What is the origin of psoas major?
- posterior abdominal wall - lumbar transverse processes
- adjacent bodies from TXII to LV
- tendinous arches between TXII to LV
What is the insertion of psoas major?
lesser trochanter of the femur
What is the innervation of psoas major?
anterior rami (L1, L2, L3)
What is the function of psoas major?
Flexes thigh at the hip joint
What is the origin of iliacus?
posterior abdominal wall - iliac fossa
What is the insertion of iliacus?
lesser trochanter of femur
What is the innervation of iliacus?
femoral nerve
What is the function of iliacus?
flexes the thigh at hip joint
What is the origin of vastus medialis? (4)
femur
- medial part of the intertrochanteric line
- pectineal line
- medial lip of linea aspera
- medial supracondylar line
What is the insertion of vastus medialis? (2)
- quadriceps femoris tendon
2. medial border of patella
What is the innervation of vastus medialis?
femoral nerve
What is the function of vastus medialis?
extends the leg at the knee joint
What is the origin of vastus intermedius?
femur
- upper 2/3rds of anterior and lateral surfaces
What are the insertions for vastus intermedius? (3)
- quadriceps femoris tendon
- lateral margin of patella
- lateral condyle of tibia
What is the innervation of vastus intermedius?
femoral nerve
What is the function of vastus intermedius?
extends the leg at the knee joint
What is the origin of vastus lateralis? (4)
femur
- lateral part of intertrochanteric line
- margin of greater trochanter
- lateral margin of gluteal tuberosity
- lateral lip of the linea aspera
What are the insertion of vastus lateralis? (2)
- quadriceps femoris tendon
2. lateral margin of patella
What is the innervation to vastus lateralis?
femoral nerve
What is the function of vastus lateralis?
extends the leg at knee joint
What is the origin of rectus femoris?
- straight head originates from the AIIS
2. reflected head originates from the ilium just superior to the acetabulum
What is the insertion for rectus femoris?
quadriceps femoris tendon
What is the innervation for rectus femoris?
femoral nerve
What is the function of rectus femoris? (2)
- flexes the thigh at hip joint
2. extends the leg at the knee joint
What is the origin for sartorius?
ASIS