Knee O

1
Knee Os Is As
2
Psoas

• O- by fleshy slips from transverse proccesses,
  bodies and discs of lumbar vertebra and T12
• I- lesser trochanter of femur
• A- Prime mover of hip flexion, flexes thigh on
  trunk when pelvis is fixed, lateral rotates
  thigh, flexes knee

3
Sartorius

• O- anterior superior iliac spine
• I- Winds around medial aspect of knee and inserts
  into the medial aspect of the proximal tibia
• A- flexes and laterally rotates thigh, flexes knee

4
Rectus Femoris

• O- Anterior inferior iliac spine and superior
  spine of the acetabulum
• I- Patella and tibial tuberoisity
• A- extends knee and flexes thigh and the hip

5
Vastus Lateralis

• O- greater trochanter, intertrochanteric line,
  linia aspera
• I- patealla and tibial tuberosity
• A- extends knee

6
Vastus Medialis

• O- linia aspera, intertrochanteric line
• I- patella and tibial tuberosity
• A- extends knee, inferior fibers stabilize patella

7
Vastus Intermedius

• O- anterior and lateral surface of proximal femur
• I- patella and tibial tuberosity
• A- extends knee

8
Tensor Fascia Latae

• O- Anterior aspect of iliac crest and anterior
  superior iliac spine
• I- iliotibial tract
• A- flexes and abducts thigh, rotates thigh
  medially

9
Gluteus Maxiumus

• O- dorsal ilium, sacrum and coccyx
• I- Gluetal tuberosity of femur, iliotibial tract
• A- major extensor of thigh

10
Biceps Femoris

• O- ishial tuberosity, linea aspera and distal
  femur
• I- Passes downward and inserts into the head of
  the fibula and lateral condyle of tibia
• A- extends thigh and flexes knee, laterally
  rotates leg

11
Semitendinosis

• O- ishial tuberosity
• I- medial aspect of upper tibial shaft
• A- extends thigh and flexes knee, medially
  rotates leg

12
Semimembranosis

• O- ishial tuberosity
• I- medial condyle of tibia
• A- extends thigh and flexes knee, medially
  rotates leg