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Muscles_of_the_anterior_thigh

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					Anterior Thigh
Muscles Pectineus Proximal attachment Superior ramus of pubis Distal attachment Pectineal line of the femur Lesser trochanter of the femur Innervation Femoral nerve (L2 and L3) may receive a branch from obturator nerve Anterior rami of lumbar nerves (L1,L2, and L3) but mainly L1 and L2 Main Action Adducts and flexes the thigh. Assists with medial rotation of the thigh Acting in conjunction with the iliacus to flex thigh at hip joint and in stabilizing this joint. Acting in conjunction with the Major to flex thigh at hip joint and in stabilizing this joint. Abducts, medial rotate and flexes thigh Flexes, abducts, and laterally rotates thigh at hip joint. Flexes leg at knee joint Extend the leg at the knee joint

Iliopsoas Major

Iliopsoas iliacus

Sides of T12-L5 vertebrae and discs between them; transvers process of all lumbar vertebrae Iliac crest, iliac fossa ala of sacrum, and anterior sacroiliac ligaments Anterior superior iliac spine and anterior part of the iliac crest Anterior superior iliac spine and superior part of iliac notch inferior to it. Anterior inferior iliac spine and ilium superior to acetabulum Greater trochanter and lateral lip of linea aspera of femur

Tendon of psoas major, lesser trochanter, and femur distal to it

Femoral nerve (L2 and L3) mainly L2

Tensor of Fascia lata

Sartorius

Iliotibial tract that Superior gluteal (L4 and attaches to lateral condyle L5) of tibia Superior part of medial Femoral nerve L2 and L3 surface of the tibia

Quadriceps femoris Rectus fermoris

Base of the patella and by patellar ligament to tibial tuberosity Base of the patella and by patellar ligament to tibial tuberosity

Femoral nerve (L2, L3, and L4) mainly L3 and L4 Femoral nerve (L2, L3, and L4) mainly L3 and L4

Quadriceps femoris Vastus lateralis

Extend the leg at the knee joint

Quadriceps femoris Vastus medialis

Intertrochanteric line and medial lip of linea aspera of femur Anterior and lateral surfaces of shaft of the femur

Base of the patella and by patellar ligament to tibial tuberosity Base of the patella and by patellar ligament to tibial tuberosity

Femoral nerve (L2, L3, and L4) mainly L3 and L4 Femoral nerve (L2, L3, and L4) mainly L3 and L4

Extend the leg at the knee joint

Quadriceps femoris Vastus intermedius

Extend the leg at the knee joint

Anterior Thigh


				
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posted:1/12/2010
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