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Hips and Legs
Anatomy of the Hips, Knee, and and Ankle
20
Anatomy
Undergraduate 2
02/17/2010

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Term
Origin and Insertion of the Iliopsoas
Definition
Origin - Sides of the bodies of the last thoracic, all lumbar vertebrae, intervertebral fibrocartilages, and base of sacrum. Also, the lower borders of the transverse processes of L1 through 5. And the inner surface of the ilium.
Insertion - Lesser Trochanter of femur and shaft just below
Term
Primary action of the Iliopsoas
Definition
Flexion and External Rotation
Term
Origin and Insertion of the Sartorius
Definition
Origin: Anterior superior iliac spine and notch just below spine of ilium.
Insertion: Anterior medial condyle of tibia.
Term
Primary Action of the Sartorius
Definition
Hip Flexion, External Rotation, and Knee Flexion.
Term
Origin and Insertion of the Rectus Femoris
Definition
Origin: Anterior inferior iliac spine and the groove (posterior) above the acetabulum.
Insertion: Superior aspect of the patella and petallar tendon to the tibial tuberosity.
Term
Primary Action of the Rectus Femoris
Definition
Hip Flexion and Knee Extension.
Term
Origin and Insertion of the Pectineus
Definition
Origin: Space 1 inch wide on front of pubis above crest.
Insertion: Rough line leading from lesser trochanter to linea aspera
Term
Primary Action of the Pectineus
Definition
Adduction, Flexion, Internal rotation.
Term
Origin and Insertion of the Gluteus Maximus
Definition
Origin: Posterior one-fourth of the crest of ilium, posterior surface of the sacrum and coccyx near the ilium, and fascia of the lumbar area.
Insertion: Oblique ridge on lateral surface of the greater trochanter and iliotibial band of facia latae
Term
Primary Action of the Gluteus Maximus
Definition
Extension and External Rotation
Term
Origin and Insertion of the Semitendinosus
Definition
Origin: ischial tuberosity.
Insertion: Upper anterior medial surface of the tibia
Term
Primary Action of the Semitendinosus
Definition
Hip extension and internal rotation, Knee flexion and internal rotation.
Term
Origin and Insertion of the Semimembranosus
Definition
Origin: Ischial tuberosity.
Insertion: Posteromedial surface of the medial tibial condyle.
Term
Primary Action of the Semimembranosus
Definition
Hip Extension and Internal Rotation, Knee flexion and internal rotation.
Term
Origin and Insertion of the Biceps Femoris
Definition
Origin: Ischial Tuberosity, lower half of linea aspera, lateral condyloid ridge.
Insertion: Lateral condyle of tibia, head of the fibula.
Term
Primary Action of the Biceps Femoris
Definition
Hip External Rotation and extension, Knee Flexion and External Rotation.
Term
Origin and Insertion of the External Rotator Muscles
Definition
Origin: Sacrum, Posterior portions of ischium, and Obturator Foramen.
Insertion: Greater trochanter and posterior aspect of greater trochanter.
Term
Primary Action of the External Rotator Muscles
Definition
External Rotation.
Term
Origin and Insertion of the Tensor Fasciae Latae
Definition
Origin: Anterior iliac crest and surface of the ilium just below crest.
Insertion: One-fourth of the way down the thigh into the iliotibial tract, which in turn inserts onto Gerdy's tubercle of the anterolateral tibial condyle
Term
Primary action of the Tensor Fasciae Latae
Definition
Hip Flexion, and abduction.
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