|
Lumbar disc syndromes |
|||
|---|---|---|---|
| L3-L4 | L4-L5 | L5-S1 | |
| root usually compressed | L4 | L5 | S1 |
| reflex diminished | knee jerk | medial hamstring | Achilles (ankle jerk) |
| motor weakness | quadriceps femoris (knee extension) | EHL and tibialis anterior (foot droop) | gastrocnemius (plantarflexion) |
| decreased sensation | medial malleolus and medial foot | large toe web and dorsum of foot | lateral malleolus and lateral foot |
| pain distribution | anterior thigh | posterior LE | posterior LE, often to ankle |
| root usually compressed | L4 | L5 | S1 |
Reference
Handbook of Neurosurgery, Mark S. Greenberg, Nicolas Arredondo, Thieme, 2006.
