upper leg

  1. Iliacus
    O -Posterior abdominal wall (iliac fossa)

    I -Lesser trochanter of femur

    In -Femoral nerve [L2, L3]

    F -Flexes the thigh at the hip joint
  2. Psoas Major
    O -Posterior abdominal wall (lumbar transverse processes, intervertebral discs, and adjacent bodies from TXII to LV and tendinous arches between these points)

    I -Lesser trochanter of femur

    In -Anterior rami [L1, L2, L3]

    F -Flexes the thigh at the hip joint
  3. Vastus Intermedius
    O -Femur-upper two-thirds of anterior and lateral surfaces

    I -Quadriceps femoris tendon and lateral margin of patella

    In -Femoral nerve [L2, L3, L4]

    F -Extends the leg at the knee joint
  4. Vastus Medialis
    O -Femur-medial part of intertrochanteric line, pectineal line, medial lip of the linea aspera, medial supracondylar line

    I -Quadriceps femoris tendon and medial border of patella

    In -Femoral nerve [L2, L3, L4]

    F -Extends the leg at the knee joint
  5. Vastus Lateralis
    O -Femur-lateral part of intertrochanteric line, margin of greater trochanter, lateral margin of gluteal tuberosity, lateral lip of the linea aspera

    I -Quadriceps femoris tendon

    In -Femoral nerve [L2, L3, L4]

    F -Extends the leg at the knee joint
  6. Sartorius
    O -Anterior superior iliac spine

    I -Medial surface of tibia just inferomedial to tibial tuberosity

    In -Femoral nerve [L2, L3]

    F -Flexes the thigh at the hip joint and flexes the leg at the knee joint
  7. Rectus Femoris
    O -Straight head originates from the anterior inferior iliac spine; reflected head originates from the ilium just superior to the acetabulum

    I -Quadriceps femoris tendon

    In -Femoral nerve [L2, L3, L4]

    F -Flexes the thigh at the hip joint and extends the leg at the knee joint
  8. Gracilis
    O -A line on the external surfaces of the body of the pubis, the inferior pubic ramus, and the ramus of the ischium

    I -Medial surface of proximal shaft of tibia

    In -Obturator nerve [L2, L3]

    F -Adducts thigh at hip joint and flexes leg at knee joint
  9. Adductor Brevis
    O -External surface of body of pubis and inferior pubic ramus

    I -Posterior surface of proximal femur and upper one-third of linea aspera

    In -Obturator nerve [L2, L3]

    F -Adducts thigh at hip joint
  10. Pectineus
    O -Pectineal line (pecten pubis) and adjacent bone of pelvis

    I -Oblique line extending from base of lesser trochanter to linea aspera on posterior surface of proximal femur

    In -Femoral nerve [L2, L3]

    F -Adducts and flexes thigh at hip joint
  11. Adductor Longus
    O -External surface of body of pubis (triangular depression inferior to pubic crest and lateral to pubic symphysis)

    I -Linea aspera on middle one-third of shaft of femur

    In -Obturator nerve (anterior division) [L2, L3, L4]

    F -Adducts and medially rotates thigh at hip joint
  12. Adductor Magnus
    • O -Adductor part-ischiopubic ramus;
    • -Hamstring part-ischial tuberosity

    • I -Posterior surface of proximal femur, linea aspera, medial supracondylar line;
    • -Adductor tubercle and supracondylar line

    • In -Obturator nerve [L2, L3, L4];
    • -Sciatic nerve (tibial division) [L2, L3, L4]

    F -Adducts and medially rotates thigh at hip joint
  13. Obturator Externus
    O -External surface of obturator membrane and adjacent bone

    I -Trochanteric fossa

    In -Obturator nerve (posterior division) [L3, L4]

    F -Laterally rotates thigh at hip joint
Author
jtsterner
ID
3455
Card Set
upper leg
Description
Origin, Insertion, Innervation & Function
Updated