Rotators of the knee

Question 1

Biceps femoris (lateral rotator)

Answer 1

Origin:
- Long head: Ischial tuberosity
- Short head: Linea Aspera
Insertion:
Head of fibula and lateral tibial condyle
Innervation:
Sciatic nerve L5-S2

Question 2

Semi tendinosus (medial rotator)

Answer 2

Origin:
Ischial tuberosity
Insertion:
Anterior-medial aspect of proximal tibial shaft, “pes anserinus”
Innervation:
Sciatic nerve L5-S2

Question 3

Semi membranosus (medial rotator)

Answer 3

Origin:
Ischial tuberosity
Insertion:
Posterior aspect of medial tibial condyle
Innervation:
Sciatic nerve L5-S2

Question 4

Sartorius (medial rotator)

Answer 4

Origin:
Anterior Superior Iliac Spine
Insertion:
Antero-medial aspect of proximal tibial shaft, “pes anserinus”
Innervation:
Femoral nerve L2,3

Question 5

Popliteus (medial rotator)

Answer 5

Origin:
Lateral aspect of Lateral femoral condyle
Insertion:
Proximal surface of posterior tibia
Innervation:
Tibial nerve L4,5, S1