Can a Pinched Nerve in My Back Cause Neuropathy in My Feet?

Yes. A pinched nerve root in the lumbar spine, particularly at the L5 or S1 level, can cause burning, numbness, or tingling in the foot that closely resembles peripheral neuropathy. This is especially likely to go unrecognized when a second compression point exists further down the leg, a pattern called double crush, which can make a spinal problem look and feel like a purely distal nerve issue.

Being told your foot symptoms are idiopathic, meaning the cause is unknown, is understandably unsatisfying, and it is worth knowing that the search does not always include the spine.

The Mechanism

Nerve roots exit the spine in the low back and travel down the leg, eventually becoming the peripheral nerves that reach the foot. When a disc, bone spur, or restricted joint compresses one of these roots, most often L5 or S1, it produces radiculopathy, which can cause burning, numbness, or weakness anywhere along the nerve’s path, including far down in the foot, sometimes with little or no pain felt in the back itself.

This becomes harder to recognize when a second site of compression exists further along the same nerve. Double crush syndrome, first described by Upton and McComas in 1973, explains that compression at one point impairs the slow transport of nutrients along a nerve, called axoplasmic flow, leaving every other point along that same nerve more vulnerable to a second compression. A published case report documented exactly this in the lower limb: a patient with L5 nerve root compression in the spine along with separate compression of the common fibular nerve near the knee, where the combination produced more severe and more confusing symptoms than either problem would have caused alone. Another case report described a similar pattern of combined L5 radiculopathy and peroneal nerve entrapment that initially responded only partially to spinal surgery alone, since the second compression point at the knee had not been identified.

This overlapping presentation explains a specific and frustrating pattern: foot symptoms that improve somewhat after treating the spine, but never fully resolve, because a second compression point lower in the leg was never assessed or treated.

When It’s Something More Serious

Weakness that makes it difficult to lift the front of your foot when walking, a foot that slaps or drags, loss of bladder or bowel control, or numbness in the groin or inner thighs are all signs that need prompt medical evaluation, since they can indicate significant nerve root compression requiring urgent attention.

How This Gets Addressed

Because symptoms felt in the foot can originate at the spine, further down the leg, or both at once, the evaluation has to trace the entire path.

Chiropractic care assesses and treats restriction in the lumbar spine where the nerve root exits, along with any additional compression points down the leg, such as near the knee or ankle.

Dry needling and massage therapy release muscular tension that can be compressing the nerve at those secondary sites.

Physical therapy restores nerve mobility along the full length of the nerve and builds the strength and movement patterns that reduce pressure at each point.

Naturopathic medicine evaluates systemic factors, including blood sugar and nutrient status, that increase a nerve’s vulnerability to compression at every site along its path.

You can learn more about our full approach to neuropathy here.

Most patients see renewed and more complete improvement once every compression point along the nerve is identified and addressed together, often moving past a plateau that treating only the spine, or only the foot, had left in place, although a nerve compressed for a long period can take longer to fully recover sensation.

Written By:

Dr. Jason Winkelmann

Naturopathic doctor, Chiropractor, Chronic Pain Specialist, and Educator

Frequently Asked Questions

How can I tell if my foot neuropathy is coming from my back?

Symptoms that follow the path of a single nerve, change with back position or certain movements, or come with low back or buttock discomfort point toward a spinal contribution. A hands-on exam that tests the lumbar spine alongside the leg and foot is more reliable than guessing from symptoms alone, especially since a second compression point further down the leg can mask or complicate the picture.

Why did treating my back only partially help my foot symptoms?

This is a recognized pattern in double crush syndrome: compression at one site, here the spine, is addressed, but a second compression point further along the same nerve, often near the knee or ankle, continues driving symptoms on its own. Both points typically need to be identified and treated for complete relief.

Can foot neuropathy from a pinched nerve be mistaken for diabetic neuropathy?

Yes, especially when someone also has diabetes or prediabetes, since both can produce similar burning and numbness in the feet. A careful exam that tests whether symptoms follow a single nerve’s path, rather than a broader symmetric pattern, along with imaging when appropriate, helps distinguish a spinal nerve root cause from a purely systemic one, and the two can also coexist.