Muscles of the Knee, Ankle, Foot (Femoral Nerve)

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Author:
fnmason
ID:
226980
Filename:
Muscles of the Knee, Ankle, Foot (Femoral Nerve)
Updated:
2013-07-13 19:18:12
Tags:
Rectus femoris Sartorius Vastus lateralis medialis intermedius
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Description:
Muscles Innervated by the Femoral Nerve
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  1. Sartorius Muscle

    Origin: Anterior superior iliac spine and the region just below it.

    Insertion: Proximal tibia, medial to tibial tuberosity (part of pes anserinus).

    Actions:  Flexes, abducts, and laterally rotates thigh at hip. Also flexes leg at knee.

    Nerve to muscle and spinal segment: Femoral nerve (L2-L3)
  2. Rectus Femoris Muscle

    Origin: Anterior inferior iliac spine and ilium above the acetabulum

    Insertion: Quadriceps tendon to base of patella and onto the tibial tuberosity via the patellar ligament.

    Actions: Flexes thigh at the hip. (Also extends leg at knee. Part of quadriceps group).

    Nerve to muscle and its spinal segment: Femoral nerve (L2-L4)
  3. Vastus Lateralis Muscle

    Origin: Greater trochanter. It also attaches to the lateral lip of linea aspera of femur.

    Insertion: Quadriceps tendon to base of  patella and onto tibial tuberosity via the patellar ligament.

    Actions: Extends leg at knee; (part of the quadriceps group).

    Nerve to Muscle and its spinal segment: Femoral nerve (L2-L4)
  4. Vastus Medialis Muscle

    Origin: Intertrochanter line. It also attaches to the medial lip of linea aspera of femur.

    Insertion: Quadriceps tendon to base of patella and onto tibial tuberosity via the patellar ligament.

    Actions: Extends leg at knee; (part of quadriceps group).

    Nerve to muscle and its spinal segment: Femoral nerve (L2-L4).
  5. Vastus Intermedius Muscle

    Origin: Anterior and lateral surfaces of shaft of femur.

    Insertion: Quadriceps tendon to base of patella and onto tibial tuberosity via the patellar ligament.

    Actions: Extends leg at knee; (part of quadriceps group).

    Nerve to muscle and its spinal segment: Femoral nerve (L2-L4).

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