Hip Extensors

Question 1

What is the origin, insertion and action for Gluteus Maximus

Answer 1

Origin - outer surface of posterior ilium, sacrum, and coccyx
Insertions - illiotibial band, gluteal tuberosity of femur
Action - extension of trunk and thigh, and lateral rotation of the thigh

Question 2

What is the origin, insertion and action for Bicep femoris (hamstring)

Answer 2

Origin - long head is ischial tuberosity and short head is the linea aspera and supra condylar ridge
Insertions - head of fibula, lateral tibial condyle
Action - flexes and laterally rotates the knee, long head extends the hip

Question 3

What is the origin, insertion and action for Semitendinosus

Answer 3

Origin - ischial tuberosity
Insertion - medial surface of proximal tibia
Action - extends the hip, flexes and medially rotates the knee

Question 4

What is the origin, insertion and action for Semimembranosus

Answer 4

Origin - ischial tuberosity
Insertion - posterior aspect of medial tibial condyle
Action - extends the hip, flexes and medially rotates the knee

Question 5

Name the muscles for hip extension

Answer 5

Gluteus Maximus 
Adductor Magnus (external part)
Biceps femoris 
Semimembranosus
Semitendonosus

Question 6

What limits the muscles for hip extension

Answer 6

All ligaments and close packed position