Lower Limb Radiculopathy
February 15th, 2021
Overview
Manifestations of Radiculopathy
- Lower motor neuron weakness affecting a myotomal distribution
- Sensory loss affecting a dermatomal distribution
Causes of Radiculopathy
- Intervertebral disc herniation
- Osteoarthritis (osteophytosis)
- Diabetes
- Haematoma - epidural / subdural
- Malignancy - spine, spinal cord
- Infection - epidural abscess, tuberculosis, Lyme disease, syphilis, herpes zoster
Lumbosacral Nerve Roots
-
Root Dermatome Myotome Reflex L1 Inguinal region L2 Anterior mid-thigh Hip flexion L3 Anterior knee Knee extension Patellar L4 Medial lower leg Hip extension & abduction
Ankle dorsiflexionPatellar L5 Lateral lower leg
Dorsum of the footDorsiflexion
Toe extension
Inversion & eversionAnkle S1 Lateral foot
Posterior lower legPlantar flexion Ankle S2 Posterior thigh Knee flexion
Toe flexion
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