Extensors of the Hip

Question 1

Semitendinosus (hamstrings)

Answer 1

O: Ischial tuberosity of the innominate (hip) bone
I: Medial surface of medial condyle of tibia
N: Sciatic nerve L5, S1, S2
A: extension of the hip and flexion of the knee

Question 1

Gluteus Maximus

Answer 1

O: Gluteal surface of the ilium, iliac crest of the innominate (hip) bone, coccyx, sacrum and sacrotuberous ligament
I: Gluteal tuberosity of the femur (1/4), (3/4) from the iliotibial tract
N: inferior gluteal nerve L5, S1, S2.
A: Extension of the hip, extension of the knee - through the iliotibial tract

Question 2

Semimembranosus (Hamstrings)

Answer 2

Ischial tuberosity of the innominate (hip) bone
I: Posteromedial surface of medial condyle of tibia
N: Sciatic nerve L5, S1, S2
A: Extension of the hip and flexion of the knee

Question 3

Biceps Femoris (Hamstrings)

Answer 3

O: ischial tuberosity of the innominate (hip) bone
I: Head of Fibula
N: Sciatic nerve L5, S1, S2
A: Extension of the hip and flexion of the knee