If you have ever felt a sharp, burning pain that starts deep in your lower back or buttock and shoots down the back of your leg, you have likely experienced what most people call "sciatica." It is one of the most common reasons patients walk into my office, and one of the most commonly misunderstood conditions I treat. The word gets used to describe everything from a dull ache in the hip to a debilitating pain that makes it impossible to stand up straight, and that kind of imprecision can lead patients down the wrong treatment path for months.

In this article, I want to give you a clear, practical understanding of what sciatica actually is, what causes it, how we diagnose it, and — most importantly — what your treatment options look like from conservative care all the way through surgery.

What Is Sciatica, Exactly?

Sciatica is not a diagnosis in itself. It is a symptom — specifically, pain that follows the path of the sciatic nerve, the largest and longest nerve in your body. The sciatic nerve forms from several nerve roots that exit the lower lumbar spine (primarily at the L4, L5, and S1 levels), merge together in the pelvis, and then travel as a single large nerve down the back of each leg, all the way to the foot.

Think of the sciatic nerve like a major highway. Several on-ramps (the individual nerve roots) feed into it from the spine, and it carries traffic all the way down the leg. When something pinches or irritates one of those on-ramps — or the highway itself — you feel pain, numbness, or tingling anywhere along the route. That is why a problem in your lower back can produce pain in your calf or numbness in your toes.

The medical term for this pattern is lumbar radiculopathy — "radiculopathy" meaning a problem at the nerve root. When patients tell me they have sciatica, what I hear is: "Something is compressing or irritating a nerve root in my lower spine, and I feel it down my leg."

What Causes Sciatica?

Several conditions can compress or irritate the sciatic nerve roots. The most common causes I see in my practice include:

Herniated Disc

This is the most frequent cause of sciatica, particularly in patients between 30 and 50 years old. The discs between your vertebrae act as shock absorbers — they have a tough outer ring (the annulus) and a soft, gel-like center (the nucleus). When the outer ring tears, the inner material can push outward and press directly on a nearby nerve root. The result is often sudden, intense leg pain that can be far worse than any back pain you feel.

Spinal Stenosis

As the spine ages, the spinal canal and the openings where nerves exit (called foramina) can gradually narrow due to thickening of the ligaments, bone spur formation, and disc degeneration. This is more common in patients over 60 and tends to produce symptoms that come on more gradually than a disc herniation. Many patients with stenosis-related sciatica notice that their leg pain is worse when standing or walking and improves when they sit down or lean forward — a pattern we call neurogenic claudication.

Degenerative Disc Disease

As discs lose height and hydration over time, they can bulge outward and contribute to nerve compression. This is usually a slower, more chronic process than an acute herniation.

Spondylolisthesis

When one vertebra slips forward relative to the one below it, the shift can narrow the space available for the nerve roots. This is a common cause of sciatica in older adults and can also occur in younger patients who have a stress fracture in the vertebra (a condition called spondylolysis).

Piriformis Syndrome

In a smaller number of cases, the sciatic nerve can be compressed by the piriformis muscle deep in the buttock. This is not a spinal problem at all, but it mimics sciatica closely enough that it needs to be considered during the workup. Distinguishing piriformis syndrome from true lumbar radiculopathy is one of the reasons a thorough physical exam matters so much.

What Does Sciatica Feel Like?

The classic presentation is pain that starts in the lower back or buttock and radiates down the back or side of the leg. But sciatica does not always follow the textbook, and the specific symptoms depend on which nerve root is being compressed.

Common symptoms include:

One important distinction: sciatica typically affects one leg. If you are experiencing pain, numbness, or weakness in both legs — or if you have sudden difficulty controlling your bladder or bowels — that is a medical emergency. Those symptoms may indicate a condition called cauda equina syndrome, and you should go to the emergency room immediately.

How Is Sciatica Diagnosed?

The diagnosis starts with a detailed history and physical examination. I want to know exactly where the pain is, when it started, what makes it better or worse, and whether there is any associated numbness or weakness. The physical exam includes specific nerve tension tests — the most well-known being the straight leg raise, where I lift your extended leg while you are lying flat. If this reproduces your shooting leg pain, it is a strong indicator that a nerve root is being compressed.

I also test the strength of specific muscle groups, your reflexes, and your sensation to pinpoint which nerve root is most likely involved. An L5 nerve root compression, for example, often causes weakness when you try to lift your foot upward (called a foot drop), while an S1 compression may weaken your ability to push off on your toes and diminish your ankle reflex.

Imaging usually starts with an MRI of the lumbar spine, which gives us a detailed picture of the discs, nerves, and spinal canal. X-rays are useful for assessing alignment and looking for spondylolisthesis, but they do not show soft tissue structures like discs and nerves. In some cases — particularly when MRI is not possible or the diagnosis is unclear — I may order a CT scan or electrodiagnostic studies (EMG/nerve conduction studies) to further characterize the nerve involvement.

Treatment Options: Starting with Conservative Care

Here is the good news: the majority of sciatica cases resolve with non-surgical treatment. Studies consistently show that approximately 80 to 90 percent of patients with sciatica from a disc herniation will improve within six to twelve weeks with conservative management. That is an important number, and it is the reason I do not rush patients to the operating room unless there is a clear reason to do so.

Activity Modification and Physical Therapy

The days of prescribing strict bed rest for sciatica are long over. Extended bed rest actually makes things worse by deconditioning the muscles that support your spine. Instead, I recommend staying as active as your pain allows and starting a structured physical therapy program focused on core stabilization, nerve gliding exercises, and lumbar flexibility. A good therapist will also work on correcting posture and body mechanics that may be contributing to your symptoms.

Medications

Anti-inflammatory medications (NSAIDs like ibuprofen or naproxen) are typically the first line of pharmacologic treatment. For more severe pain, a short course of oral corticosteroids can help reduce inflammation around the nerve root. I use muscle relaxants selectively, and I am cautious with opioid medications — they have a role in managing acute flare-ups, but the risks of prolonged use are well established and I discuss those openly with my patients.

For patients with significant nerve-related pain (burning, tingling, electrical sensations), medications like gabapentin or pregabalin can be helpful because they target the specific pathways involved in nerve pain.

Epidural Steroid Injections

When oral medications and physical therapy are not providing adequate relief, epidural steroid injections (ESIs) are the next step. These injections deliver a potent anti-inflammatory medication directly to the area around the compressed nerve root. The goal is to reduce the inflammation that is driving your symptoms and create a window of reduced pain that allows you to participate more effectively in physical therapy.

Injections are not a permanent fix — they do not change the underlying structural problem — but they can be very effective at managing symptoms, particularly in the acute phase of a disc herniation when the body is working to resorb the herniated material on its own.

When Surgery Becomes the Right Choice

Surgery for sciatica is not the default. It is a tool I recommend when conservative care has had a fair trial and has not provided meaningful relief, or when certain clinical findings make waiting inappropriate.

I recommend considering surgery when:

I tell my patients that the decision to have surgery should never feel rushed unless there is a true emergency. The goal is to give conservative treatment a real chance to work, while being honest about when it has not worked and a different approach is needed.

What Does Surgery Involve?

The most common surgical procedure for sciatica caused by a disc herniation is a microdiscectomy — a minimally invasive operation where I remove the portion of the herniated disc that is compressing the nerve root. This is done through a small incision (typically about an inch), using an operating microscope or magnification loupes for precision. The surgery usually takes 45 minutes to an hour, and most patients go home the same day.

Microdiscectomy has one of the highest success rates of any spine procedure. Roughly 85 to 95 percent of patients experience significant relief of their leg pain after surgery. The back pain component may take longer to resolve, but the primary goal — getting pressure off the nerve and eliminating the radiating leg symptoms — is achieved reliably.

For sciatica caused by spinal stenosis or spondylolisthesis, the surgery may involve a laminectomy (removing bone and thickened ligament to open up the spinal canal) and, in some cases, a spinal fusion to stabilize the spine if there is associated instability. These are more involved procedures than a simple discectomy, but they are well-established operations with strong outcomes when performed for the right indications.

What Results Can I Expect?

Recovery depends on the specific procedure and the severity of your condition before surgery. For a microdiscectomy, most patients notice immediate improvement in their leg pain — often on the day of surgery. I typically have patients walking within a few hours of the procedure, and most return to desk work within one to two weeks. Full recovery, including return to physical activities and exercise, usually takes four to six weeks.

For laminectomy or fusion procedures, the recovery timeline is longer. Fusion patients typically spend four to six months in recovery before reaching their new baseline, though many notice meaningful improvement in leg symptoms within the first few weeks.

It is important to set realistic expectations. Surgery is very good at relieving leg pain caused by nerve compression. It is less predictable for isolated back pain that does not have a clear structural cause. Part of my job during the evaluation process is to determine whether your specific pain pattern is something surgery can reliably address.

The Bottom Line

Sciatica is common, it can be profoundly disruptive, and it is almost always treatable. The majority of patients improve with conservative care — physical therapy, medications, and injections. For the subset of patients who do not improve, or who have progressive neurological deficits, surgery offers reliable relief with a strong track record of success.

If you are dealing with leg pain that has not responded to treatment, or if you are unsure whether your symptoms warrant evaluation by a spine specialist, I would encourage you to schedule a consultation. Understanding the specific cause of your sciatica is the first step toward getting you better, and that starts with a thorough evaluation.

You can reach our office at (484) 509-0840 or visit our contact page to schedule an appointment at Keystone Spine & Pain Management in Wyomissing, PA.