Sciatic Nerve Pathway

Question 1

Where does the Sciatic nerve pathway originate (exit SC)?

2

Answer 1

VIA LUMBOSACRAL PLEXUS
from
SPINAL NERVES L4 - S3

Question 2

Name the complete list of where the Sciatic nerve travels?

6

Answer 2

1. ANTERIOR TO PIRIFORMIS
2. THROUGH GREATER SCIATIC FORAMEN
3. OVER QUADRATUS FEMORIS
   (ISCHIAL TUBEROSITY to GREATER TROCHANTER)
4. ENTERS POST. THIGH
5. PASSING DEEP TO LONG HEAD OF BICEPS FEMORIS
6. REACHING POPLITEAL FOSSA - BRANCHES INTO TIBIAL n. and COMMON PERONEAL n.)

Question 3

Name the first 3 steps of where the Sciatic nerve travels?

Answer 3

1. ANTERIOR TO PIRIFORMIS
2. THROUGH GREATER SCIATIC FORAMEN
3. OVER QUADRATUS FEMORIS
   (ISCHIAL TUBEROSITY to GREATER TROCHANTER)

Question 4

Name the final 3 steps of where the Sciatic nerve travels?

Answer 4

4. ENTERS POST. THIGH
5. PASSING DEEP TO LONG HEAD OF BICEPS FEMORIS
6. REACHING POPLITEAL FOSSA - BRANCHES INTO TIBIAL n. and COMMON PERONEAL n.)

Question 5

What does the Sciatic nerve innervate?

Answer 5

LATERAL ROTATOR GROUP, ADDUCTOR MAGNUS, MUCH OF LEG REALLY.
TIBIAL - POST CALF
COMM PER - ANT LEG

Question 6

What are 3 entrapment sites of the Sciatic N?

Answer 6

SPINE
\+
PIRIFORMIS
\+
HAMSTRINGS