Etiology
Presentation
A type of Radiculopathy → Radicular pain
Most commonly affected:
-
L5-S1 → Affect S1
e.g. Affect S1, presentation of LMN signs :
- Muscle bulk: gastronomic atrophy
- Power: S1 Myotome : hip extension, knee flexion, ankle plantar flexion
- Sensory: S1 Dermatome: Sole and lateral aspect of the foot
-
L4-L5
-
L3-L4
-
Never affect L1


History:
- Pain is leg-dominant – around or below the gluteal fold and can extend to the:
- Leg pain is affected by back movement or position. Leg pain is always constant.
Physical Examination:
- Leg-dominant pain – the location on examination matches the location on history. Leg pain is affected by back movement or position.
- There must be an abnormal neurological finding:
- a positive irritative test
- and/or presence of focal neurological deficits
Exercise