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What is the origin and insertion of the Vastus Lateralis?
What is the origin and insertion of the Vastus Lateralis?
Origin: Anterior and inferior border of the greater trochanter, lateral region of the gluteal tuberosity, lateral lip of the linea aspera of the femur. Insertion: Base of patella and tibial tuberosity of the tibia.
Origin: Anterior and inferior border of the greater trochanter, lateral region of the gluteal tuberosity, lateral lip of the linea aspera of the femur.

Insertion: Base of patella and tibial tuberosity of the tibia.
What is the isolated function of the Vastus Lateralis?
Concentrically accelerates knee extension.
What is the integrated function of the Vastus Lateralis?
*Eccentrically decelerates knee flexion, adduction, and internal rotation.
*Isometrically stabilizes the knee.
What is the origin and insertion of the Vastus Medialis?
What is the origin and insertion of the Vastus Medialis?
Origin: Lower region of intertrochanteric line, medial lip of linea aspera, proximal medial supracondylar line of the femur. Insertion: Base of patella, tibial tuberosity of the tibia.
Origin: Lower region of intertrochanteric line, medial lip of linea aspera, proximal medial supracondylar line of the femur.

Insertion: Base of patella, tibial tuberosity of the tibia.
What is the isolated function of the Vastus Medialis?
Concentrically accelerates knee extension.
What is the integrated function of the Vastus Medialis?
*Eccentrically decelerates knee flexion, adduction, and internal rotation.
*Isometrically stabilizes the knee.
What is the origin and insertion of the Vastus Intermedius?
What is the origin and insertion of the Vastus Intermedius?
Origin: Anterior-lateral regions of the upper two-thirds of the femur. Insertion: Base of patella, tibial tuberosity of the tibia.
Origin: Anterior-lateral regions of the upper two-thirds of the femur.

Insertion: Base of patella, tibial tuberosity of the tibia.
What is the isolated function of the Vastus Intermedius?
Concentrically accelerates knee extension.
What is the integrated function of the Vastus Intermedius?
*Eccentrically decelerates knee flexion, adduction, and internal rotation.
*Isometrically stabilizes the knee.
What is the origin and insertion of the Rectus Femoris?
What is the origin and insertion of the Rectus Femoris?
Origin: Anterior-inferior iliac spine of the pelvis. Insertion: Base of the patella, tibial tuberosity of the tibia.
Origin: Anterior-inferior iliac spine of the pelvis.

Insertion: Base of the patella, tibial tuberosity of the tibia.
What is the isolated function of the Rectus Femoris?
Concentrically accelerates knee extension and hip flexion.
What is the integrated function of the Rectus Femoris?
*Eccentrically decelerates knee flexion, adduction, and internal rotation.
*Decelerates hip extension.
*Isometrically stabilizes the lumbo-pelvic-hip complex and knee.