|
Feature |
Superior Gluteal Nerve |
Inferior Gluteal Nerve |
|
Root value |
L4, L5, S1 |
L5, S1, S2 |
|
Origin |
Sacral plexus |
Sacral plexus |
|
Pathway |
Exits through greater sciatic foramen, above the piriformis muscle |
Exits through greater sciatic foramen, below the piriformis muscle |
|
Muscles supplied |
- Gluteus medius - Gluteus minimus - Tensor fasciae lata (TFL) |
- Gluteus maximus |
|
Function |
- Hip abduction - Medial rotation - Stabilization of pelvis during walking |
- Hip extension - Lateral rotation of thigh
|
|
Clinical correlation |
Injury leads to Trendelenburg sign (pelvic drop on the opposite side) |
Injury leads to difficulty in rising from a seated position and climbing stairs |