Knee OIA

1) Adductor Brevis

0: The ramus of the pubis. Only acts on the femur

I: Linea aspera of the femur

A: Adducts and laterally rotates the thigh

2) Adductor Longus

0: The ramus of the pubis. Only acts on the femur

I: Linea aspera of the femur

A: Adducts and laterally rotates the thigh

3) Adductor Magnus

0: The ramus of the pubis. Only acts on the femur

I: Linea aspera of the femur

A: Adducts and laterally rotates the thigh

4) Biceps Femoris

0: Long head - Ischial tuberosity

short head - lateral lip of the linea aspera

I: Lateral surface of the head of the fibula and the lateral condyle of the tibia

A: Flexes the leg, the long head extends the thigh

5) Gracilis

o: symphysis pubis and the pubic arch

I: Medial surface of the tibia just below the condyle

A: Adducts the thigh and flexes the leg

6) Rectus Femoris

0: Anterior inferior iliac spine and just above the acetabulum of the os coxae

I: Tibial tuberosity, via the patella and the patellar ligament

A: Extends the leg; the rectus femoris also flexes the thigh

7) Sartorius

0: Anterior superior iliac spine

I: Proximal medial surface of the tibia, below the tuberosity

A: Flexes the thigh and the leg and laterally rotates the thigh

8 Semimembranosus

0: Ischial tuberosity

I: Medial surface of the proximal end of the tibia

A: Flexes the leg and extends the thigh

9) semitendinosus

0: Ischial Tuberosity

I: Medial surface of the proximal end of the tibia

A: Flexes the leg and extends the thigh

10) Vastus Intermedius

0: Anterior surface of the shaft of the femur

I: Tibial tuberosity, via the patella and the patellar ligament

A: Extends the leg, also flexes the thigh

11) Vastus Lateralis

0: Greater trochanter and lateral lip of the linea aspera of the femur

I: Tibial tuberosity, via the patella and the patellar ligament

A: Extends the leg, also flexes the thigh

12) Vastus Medialis

o: Medial lip of the linea aspera of the femur

I: Tibial tuberosity, via the patella and the patellar ligament

A: Extends the leg, also flexes the thigh