Is It Normal to Have Sciatica After Back Surgery?
Dr. Rob Letizia PT, DPTShare
Medically reviewed by Dr. Rob Letizia, PT, DPT · Doctor of Physical Therapy, 25+ years treating spine & orthopedic conditions · Last reviewed 2026-10-13
The surgery was supposed to fix the leg pain. Two weeks later, or two months later, the leg still burns, tingles or feels numb, and the thought arrives: did it work? It is one of the most common worries after a microdiscectomy or any other back surgery for sciatica, and it usually has a reassuring answer.
Surgery takes the pressure off the nerve. It does not instantly heal the nerve. How your leg symptoms change over the following weeks and months tells you far more than how they feel on any single day.
Is it normal to have sciatica after back surgery?
Some leg symptoms after back surgery are common, and they are usually part of recovery rather than a sign the operation failed. A nerve root that was compressed and inflamed for weeks or months does not switch off the moment the disc fragment or bone is removed. Leg pain tends to settle first. Tingling and numbness are slower, and some numbness can remain for a long time.
The research shows the pattern clearly. In a study that followed 314 people for a year after lumbar decompression surgery for conditions including disc herniation and stenosis, average leg pain fell from 6.05 out of 10 before surgery to 2.00 at three months and 1.02 at six months. Average leg numbness fell more slowly, from 3.49 to 1.29 at six months, and then hardly moved: 1.26 at twelve months (Zou et al., BMC Musculoskeletal Disorders, 2022).
The 3-Month Trend Rule
Judge leg symptoms after back surgery by their direction across weeks, not by how they feel on one day. Less than before surgery and easing is the expected pattern, even with bad days along the way. Flat for weeks is worth raising at your follow-up. Worse than before surgery, or a sudden return after the pain had eased, is a call to your surgeon now.
Three months is the natural checkpoint because that is where the measured change is largest: in Zou et al., average leg pain at three months was a third of its pre-surgery level. If yours has not moved at all by then, that is a conversation for your surgeon and your physical therapist, not something to wait out alone.
Leg Pain and Numbness After Back Surgery: The Recovery Table
| Time after surgery | Average leg pain (0-10) | Average leg numbness (0-10) | What it means |
|---|---|---|---|
| Before surgery | 6.05 | 3.49 | Where most people start |
| 3 months | 2.00 | 1.91 | Leg pain has fallen fastest; numbness has improved, but less |
| 6 months | 1.02 | 1.29 | Most of the numbness improvement that is coming has arrived |
| 12 months | 0.49 | 1.26 | Leg pain still easing; numbness essentially unchanged since 6 months |
Source: Zou et al., 2022, 314 patients after lumbar decompression surgery, scores on a 0-10 scale. These are averages; individual recoveries vary, and people who had more numbness before surgery were more likely to still have some afterwards.
Is it normal to still feel sciatica after a microdiscectomy?
Yes, for a while. A microdiscectomy removes the piece of disc pressing on the nerve root, which is why many people notice the sharpest leg pain ease quickly. The nerve root itself, though, has been squeezed and irritated, and it recovers on its own slower timetable. Lingering tingling, a patch of numbness on the shin or foot, or leg pain that comes and goes while trending down are all consistent with a nerve that is settling.
What is not expected is leg pain that is as bad as, or worse than, it was before the operation, or severe leg pain that comes back suddenly after it had eased. Those need your surgeon.
The 4-Question Post-Surgery Sciatica Check
Go through all four. They turn "is this normal?" into something you can answer, and something your surgeon or physical therapist can act on.
- Compared with before surgery, is it better, the same or worse? Better is the expected answer, even if it is not gone. The same or worse needs your surgeon.
- Over the last two to three weeks, is it easing, flat or building? Easing with ups and downs is recovery. Flat for weeks is worth raising. Building, or a sudden return after it had eased, needs a call.
- What kind of symptom is it: pain, tingling, numbness or weakness? Pain usually improves first; numbness is the slowest and can persist. Weakness that is new or getting worse is never something to wait on.
- Are there any red flags? Numbness in the groin or saddle area, a change in bladder or bowel control, weakness in both legs, a fever, or a red, swollen or leaking incision. Any one of these overrides the other three questions.
What's Normal and What's Not: Symptom by Symptom
| Symptom | Usually part of recovery | Call your surgeon |
|---|---|---|
| Leg pain | Less than before surgery and trending down over weeks, with some up-and-down days | Back to its pre-surgery level, or a sudden return of severe leg pain after it had eased |
| Tingling or pins and needles | Coming and going as the nerve settles | Spreading to a new area, or to both legs |
| Numbness | A patch that is slowly shrinking or fading; it is the slowest symptom to change | New numbness, or numbness in the groin, inner thighs or the area you sit on (go to an emergency department) |
| Weakness | The same as, or better than, before surgery | New or worsening weakness, such as the foot slapping or catching when you walk |
| Back or incision pain | Soreness around the incision that is easing | Redness, swelling, warmth or fluid from the wound, or a fever |
How long does nerve pain last after back surgery?
Leg pain usually improves fastest, with most of the change in the first few months. Numbness takes longer and is the symptom most likely to linger: in Zou et al., average numbness improved through the first six months and then barely changed, and 236 of 314 patients still reported at least some numbness at one year, most of it mild (Zou et al., 2022). A small numb patch that no longer bothers you is a common end point, not a failed surgery.
Can a disc herniate again after a microdiscectomy?
It can. In a prospective cohort followed for two years after lumbar discectomy, 6% needed another operation for a re-herniation at the same level, and across the studies the authors reviewed, two-year re-herniation ranged from 0% to 23% (Parker et al., Clinical Orthopaedics and Related Research, 2015).
The warning sign is the shape of the change: leg pain that had clearly settled and then returns sharply, often after a lift, a bend or a sneeze. That is different from the gradual, up-and-down easing of a nerve that is still recovering, and it should go to your surgeon rather than be waited out.
When should I call my surgeon about leg pain after back surgery?
Go to an emergency department today for:
- numbness in the groin, inner thighs or the area you sit on;
- a new change in bladder or bowel control;
- weakness in both legs, or leg weakness that is getting rapidly worse;
- chest pain or sudden shortness of breath.
Call your surgeon the same day for:
- leg pain that is back to its pre-surgery level, or a sudden return of severe leg pain after it had eased;
- new or worsening weakness in one leg, such as the foot catching or slapping when you walk;
- a fever, or redness, swelling, warmth or fluid from the incision;
- a headache that is much worse sitting or standing and eases lying down;
- a painful, swollen calf.
Raise it at your next follow-up:
- leg symptoms that have been flat, neither better nor worse, for several weeks;
- numbness that is still present at three months and bothers you.
Our back pain red flags guide explains these warning signs in more detail.
What helps the nerve settle after back surgery
Your surgeon sets the restrictions and decides when physical therapy starts; follow those first. Within them, rehab after back surgery is about helping the nerve and the tissues around it tolerate movement again: walking, gradually restoring how far you can bend and move, and rebuilding strength in the trunk and legs so the spine is not doing the work alone.
At Spectrum Therapeutics, Dr. Rob Letizia, PT, DPT, starts by measuring where your leg symptoms actually are, including strength, reflexes and sensation, so that "is this getting better?" has an answer in numbers rather than impressions. That baseline is also what lets him tell you, and your surgeon, if something stops following the expected pattern.
If your pain has gone on long after surgery and the standard approach has run out of answers, our guide to rehab when back surgery fails covers the complex cases. If you are still deciding whether to have surgery, start with do I need surgery for a herniated disc?
Started with an AI assistant? Bring the plan in.
ChatGPT, Gemini and Claude will all tell you that some sciatica after back surgery can be normal, and that is true. What none of them can do is test your strength, reflexes and sensation, compare them with how you were last week, and tell you whether your leg is following the expected pattern or drifting off it.
Bring the questions you have been asking and the exercises you have been given. We will tell you which parts fit your stage of recovery and what to raise with your surgeon.
Book a Plan Check · one visit, in person at our Wayne, NJ clinic. We test the plan you are already following, tell you which parts to keep, and correct what is provoking it · call or text (973) 689-7123. Reviewed by Dr. Rob Letizia, PT, DPT · 11 years leading Spectrum Therapeutics, 25 years in practice, 300+ five-star patient reviews.
Frequently asked questions: sciatica after back surgery
Is it normal to have sciatica after back surgery?
Some leg symptoms after back surgery are common and are usually part of recovery, not a sign that the operation failed. Surgery takes pressure off the nerve, but an irritated nerve takes time to settle. Leg pain usually improves fastest; tingling and numbness improve more slowly, and some numbness can remain long term. What matters is the direction over weeks: less than before surgery and easing is the expected pattern. Leg pain that is back to its pre-surgery level, new weakness, or numbness in the groin or saddle area needs your surgeon, and the saddle symptoms need an emergency department.
Is it normal to still feel sciatica after a microdiscectomy?
Yes, for a while. Removing the disc fragment takes pressure off the nerve root, but the nerve itself recovers more slowly than the mechanical problem is fixed. In a study of 314 people followed for a year after lumbar decompression surgery, average leg pain fell from about 6 out of 10 before surgery to 2 at three months and about 1 at six months (Zou et al., BMC Musculoskeletal Disorders, 2022). A return of severe leg pain after it had eased should be reported to your surgeon.
How long does nerve pain last after back surgery?
Leg pain usually improves fastest, with most of the change in the first few months. Numbness is slower. In Zou et al. (BMC Musculoskeletal Disorders, 2022), average numbness improved through the first six months and then barely changed between six and twelve months, and 236 of 314 patients still reported at least some numbness at one year, mostly mild.
Can a disc herniate again after a microdiscectomy?
Yes. In a prospective cohort followed for two years after lumbar discectomy, 6% needed another operation for a re-herniation at the same level, and across the studies the authors reviewed, two-year re-herniation ranged from 0% to 23% (Parker et al., Clinical Orthopaedics and Related Research, 2015). A sudden return of severe leg pain after it had settled is the classic warning sign and should be reported to your surgeon.
When should I call my surgeon about leg pain after back surgery?
Call the same day for leg pain that is back to its pre-surgery level or a sudden return of severe leg pain, new or worsening leg weakness, a fever, or redness, swelling or fluid from the incision. Go to an emergency department for numbness in the groin, inner thighs or the area you sit on, a change in bladder or bowel control, or weakness in both legs.
Do I need a referral for physical therapy after back surgery in New Jersey?
New Jersey allows direct access to physical therapy for most plans, though after surgery your surgeon will usually send a referral and tell you when to start. Any Medicare plan, including Medicare Advantage and Medigap plans, requires a doctor's script.
Physical therapy after back surgery in Wayne and Northern New Jersey
At Spectrum Therapeutics of NJ in Wayne, we see patients after microdiscectomy, laminectomy and other back surgery from across Passaic County and Northern New Jersey. Care is one-on-one with Dr. Rob Letizia, coordinated with your surgeon's restrictions, and measured visit to visit. Learn more about our post-surgical rehabilitation and sciatica treatment. New Jersey allows direct access to physical therapy; any Medicare plan requires a doctor's script.
Call us at 973-689-7123 to book an evaluation.
