muscles crossing the hip and knee joints: anterior

Question 1

Iliopsoas: Iliacus

Answer 1

O: iliac fossa and crest, ala of sacrum
I: lesser trochanter of femur via iliopsoas tendon
N: femoral nerve. roots: l2,l3
K: flex thigh or flexing trunk on thigh during bow

Question 2

Iliopsoas: psoas major

Answer 2

O: fleshy slips from transverse processes, bodies and discs of lumbar vertebrae and t12
I: lesser trochanter of femur via iliopsoas tendon
N: ventral rami. roots l1-l3
K: flex thigh or flexing trunk on thigh during bow, lateral flexion of vertebral column

Question 3

Sartorius

Answer 3

O: anterior superior iliac spine
I: winds around medial aspect of knee and inserts into medial aspect of proximal tibia
N: femoral nerve
K: flexes, abducts and laterally rotates thigh, flexes knee, produces the cross legged position

Question 4

Adductors: Adductor magnus

Answer 4

O: ischial and pubic rami and ischial tuberosity
I: linra aspera and adductor tubercle of femur
N: obturator nerve and sciatic nerve
K: adducts and medially rotates and flexes thigh, thigh extension