Start with a symptom
Foot Drop: Difficulty Lifting the Front of the Foot
Foot drop is the name for difficulty lifting the front of the foot. Like sciatica it describes a symptom rather than a diagnosis, and several conditions in this library list it. Each guide below explains what the condition is and sets out its own warning signs — read that section on the guide itself.
7 guides on this page, including 1 condition that mimic spine pain.
This article is general education, not medical advice. It cannot account for your history, imaging, or examination. Talk to a qualified clinician about your own care.
Spine conditions covered here
- Lower BackNeeds prompt medical assessment
Lumbar Motor Deficit
Also called: foot drop, leg weakness from a pinched nerve
New or worsening leg or foot weakness, such as foot drop, caused by a compressed lumbar nerve root, and a signal that timely evaluation matters.
Read the full guide - Lower Back
Lumbar Disc Herniation
Also called: slipped disc, sciatica, herniated disc in the lower back, ruptured disc
When part of a disc in the lower back displaces and presses on a nerve root, causing sciatica: pain, numbness, or weakness down the leg.
Read the full guide - Lower Back
Lumbar Radiculopathy
Also called: pinched nerve in the lower back, sciatica, trapped nerve in the lower back, nerve pain down the leg
A pinched or inflamed nerve root in the lower back that sends sharp, burning, or electric pain, numbness, tingling, or weakness down the leg.
Read the full guide - Lower Back
Lumbar Foraminal Stenosis
Also called: narrowed nerve exit in the lower back, pinched nerve where it leaves the spine
A narrowing of the bony exit channel through which a lumbar nerve root leaves the spine, causing sharp, radiating leg pain, numbness, and sometimes weakness.
Read the full guide - Lower Back
Lumbar Lateral Recess Stenosis
A focal narrowing of the subarticular zone of the lumbar spine that compresses a traversing nerve root, producing leg pain, numbness, and sometimes weakness along a specific dermatomal pattern.
Read the full guide - Lower BackCan be a medical emergency
Cauda Equina Syndrome
Also called: cauda equina compression, nerve compression at the bottom of the spine
A spinal emergency caused by compression of the lumbar and sacral nerve roots, producing leg weakness, saddle numbness, and loss of bladder or bowel control that can become permanent without immediate treatment.
Read the full guide
Conditions that mimic spine pain
These are problems elsewhere in the body. They are covered in this library because they are commonly mistaken for a spinal cause, and telling them apart changes who you should be seeing.
Common questions
- Is foot drop always an emergency?
- Not always, but any new or worsening leg weakness deserves prompt medical attention. Weakness that is mild and stable can often be evaluated urgently rather than emergently, but weakness that is actively progressing should be assessed the same day.
- Do most disc herniations need surgery?
- No. The natural history is favorable. Most people improve within six to twelve weeks without surgery as the herniated fragment shrinks and the inflammation settles. First-line care is non-operative.
- Will lumbar radiculopathy (sciatica) go away on its own?
- Often, yes. The natural history is generally favorable, and most disc-related radiculopathies improve substantially over six to twelve weeks with conservative care such as activity modification, anti-inflammatory medication, and physical therapy.
- Will lumbar foraminal stenosis improve without surgery?
- Many patients do improve or stabilize over time with conservative care. Physical therapy, activity modification, anti-inflammatory medications, and transforaminal epidural steroid injections help the majority of patients avoid surgery. The natural history is variable, however, and a small proportion of people experience persistent or progressive symptoms that eventually require a surgical decision.
- Is lateral recess stenosis the same as spinal stenosis?
- They are related but distinct. Spinal stenosis is a broader term that includes central canal narrowing, while lateral recess stenosis refers specifically to narrowing of the subarticular gutter where the traversing nerve root passes before it enters the foramen. The two often coexist, and lateral recess stenosis is responsible for the dermatomal leg pain that distinguishes this condition from pure central narrowing.
- What makes cauda equina syndrome a surgical emergency?
- Unlike a typical pinched nerve, cauda equina syndrome can cause progressive and potentially irreversible loss of bladder, bowel, and leg function. Earlier decompression, most commonly recommended within roughly 48 hours of symptom onset, is associated with better recovery. Delay risks permanent incontinence, sensory loss, and weakness.
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