Hamstring Complex

Question 1

Bicep Femoris-Long Head Origin and Insertion

Answer 1

Origin- Ischial Tuberosity of the pelvis, part of the sacrotuberous ligament
Insertion- Head of the fibula

Question 2

Biceps Femoris-Long Head

Isolated and Integrated Functions

Answer 2

Isolated- concentrically accelerates knee flexion and hip extension, and tibial external rotation
Integrated- eccentrically decelerates knee extension, hipflexion, tibial internal rotation at mid stance of gait cycle, and isometrically stabilizes the lumbo-pelvic-hip complex and knee

Question 3

Biceps Femoris-Short Head Origin and Insertion

Answer 3

Origin-Lower one thirdof the posterior aspect of the femur

Insertion- head of the fibula

Question 4

Biceps Femoris-Short Head Isolated and Integrated Functions

Answer 4

Isolated-concentrically accelerates knee flexion and tibial external rotation
Integrated- Eccentrically decelerates knee extension, tibial internal rotation, and isometrically stabilizes the knee

Question 5

Semimembranosus

Origin and Insertion

Answer 5

Origin-Ischial tuberosity of the pelvis

Insertion- Posterior aspect of the medial tibial condyle of the tibia

Question 6

Semimembranosus

Isolated and Integrated Functions

Answer 6

Isolated-concentrically accelerates knee flexion, ,hip extension, and tibial internal rotation
Integrated- Eccentrically decelerates knee extension, hip flexion, tibial external rotation, isometrically stabilizes the lumbo-pelvic-hip complex

Question 7

Semitendinosus

Origin and Insertion

Answer 7

Origin-Ischial tuberosity of the pelvis and part of the sacrotuberous ligament
Insertion- proximal aspect of the medial tibial condyle of the tibia

Question 8

Isolated and Integrated Functions

Answer 8

Isolated-concentrically accelerates knee flexion, hip extension, and tibial internal rotation
Integrated- Eccentrically decelerates knee extension, hip flexion, tibial external rotation, isometrically stabilizes the lumbo-pelvic-hip complex and knee