Lumbar radiculopathy is pain, numbness or weakness caused by irritation or compression of a nerve root in the lower back. Symptoms usually travel from the back into the buttock, thigh, calf or foot along one nerve pathway. Physical therapy helps most cases without surgery. SportsMed Physical Therapy treats lumbar radiculopathy at clinics across New Jersey and Connecticut.
What Is Lumbar Radiculopathy?
Lumbar radiculopathy describes dysfunction of a spinal nerve root as it exits the lower spine. The lumbar roots L1 through L5, plus S1, carry signals to and from the legs. When one is compressed or irritated, symptoms follow that nerve’s map: a dermatome for sensation, a myotome for strength. L5 involvement often causes pain along the outer calf into the top of the foot with weak toe lifting; S1 affects the calf with a weak calf raise. Many people call it sciatica, though sciatica is the symptom and radiculopathy the mechanism. It affects an estimated 3 to 5 percent of adults, most often between ages 30 and 60.
Joint replacement, or arthroplasty, resurfaces a worn joint with implanted components. In a total knee replacement, the femur and tibia ends are capped and the kneecap is often resurfaced. In a total hip replacement, the femoral head becomes a stem and ball and the socket receives a new cup. Shoulder replacements may be anatomic or reverse. More than one million hip and knee replacements are performed in the United States each year, most in adults aged 55 to 80. The implant handles the joint surface, but the muscles, balance and movement habits around it still need retraining.
What Causes Lumbar Radiculopathy?
The most common cause is a herniated disc pressing on or inflaming a nerve root, which is why radiculopathy peaks in middle age. In older adults the cause shifts toward degenerative narrowing from bone spurs, thickened ligaments or enlarged facets. Everyday factors matter too: long hours driving between Newark and Jersey City, and repeated bending at work.
- Lumbar disc herniation, most often at L4-L5 or L5-S1
- Degenerative narrowing of the foramen or spinal canal
- Bone spurs and facet joint enlargement
- Spondylolisthesis, where one vertebra slips forward
- Repetitive bending, twisting or heavy lifting
- Prolonged sitting, driving and whole-body vibration
What Are the Symptoms of Lumbar Radiculopathy?
The defining feature is symptoms that travel below the knee in a defined band rather than across the whole leg. Pain is often electric, burning or shooting, and can exceed the back pain itself. Coughing and prolonged sitting intensify it.
- Sharp or burning pain from the low back into the buttock and leg
- Numbness or pins and needles in a specific strip of skin
- Weakness such as foot drop, toe weakness or a weak calf raise
- Pain aggravated by sitting, coughing or bending forward
Seek prompt medical attention if you develop numbness in the groin or inner thighs, loss of bladder or bowel control, or rapidly progressing leg weakness, since these require emergency evaluation.
How Is Lumbar Radiculopathy Diagnosed?
Diagnosis is largely clinical. Your therapist maps where symptoms travel, tests sensation, reflexes and strength for each nerve root, and uses the straight leg raise or slump test. Imaging is not required early, because MRI findings are common in people without symptoms. MRI becomes useful when weakness progresses or symptoms persist beyond six to eight weeks.
How Physical Therapy Treats Lumbar Radiculopathy
The aim is to take pressure off the nerve root, restore movement, and rebuild the strength that keeps symptoms from returning. At SportsMed, physical therapy for radiculopathy is individualized, because positions that help one patient can aggravate another.
Early treatment finds your directional preference, often repeated extension or an unloading position, and pairs it with manual therapy, traction where appropriate, and nerve glides that restore the nerve’s ability to slide. Education is central: how to sit, drive and sleep without provoking symptoms. As leg pain centralizes, therapists progress to hip and trunk strengthening, hinge retraining and walking. Later, loading advances toward job or sport demands. Some patients pair therapy with chiropractic care or acupuncture; those injured at work use workplace injury rehabilitation.
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How Long Does Recovery Take?
Many people improve significantly within six to twelve weeks of consistent care, and leg pain usually resolves before back pain. Numbness and strength take longer, sometimes months, because nerve tissue recovers slowly. Progress is faster with early treatment, regular walking and a consistent home program, and slower with severe or long-standing compression, diabetes, smoking and heavy manual work. Weakness that worsens despite therapy should be re-evaluated promptly.
Lumbar Radiculopathy Treatment Near You in New Jersey and Connecticut
SportsMed has clinics across New Jersey and Connecticut, with many serving the Essex and Hudson County corridor. Nerve-related leg pain is treated at physical therapy in Newark, NJ, physical therapy in Harrison, NJ, physical therapy in Union City, NJ and our Jersey City clinic near McGinley Square, with clinics also in Bayonne, North Bergen, West New York, Belleville, Bloomfield, Montclair, Maplewood and West Orange. Bergen County patients often visit physical therapy in Hackensack, NJ. We serve Bergen, Essex, Hudson, Middlesex, Monmouth, Morris, Ocean, Passaic and Union Counties, plus Fairfield and New Haven Counties. Browse every New Jersey clinic or Connecticut clinic, then book an appointment.
Frequently Asked Questions About Lumbar Radiculopathy
Q: Is lumbar radiculopathy the same thing as sciatica?
A: They overlap but are not identical. Sciatica describes pain traveling along the sciatic nerve. Lumbar radiculopathy names the cause, an irritated nerve root at a specific spinal level. Other conditions, including piriformis syndrome, create similar pain without nerve root involvement.
Q: Can lumbar radiculopathy get better without surgery?
A: In most cases, yes. Most patients improve with physical therapy, activity modification and time, and disc-related nerve compression often reduces on its own. Surgery is considered mainly for progressive weakness, emergency red flags, or severe pain persisting despite months of conservative care.
A: Most knee and hip replacement patients attend two to three sessions per week for six to twelve weeks, then taper as goals are met. The number depends on your strength, the joint replaced and your surgeon’s protocol. Home exercise matters as much as clinic time.
Q: Why does sitting make my leg pain worse?
A: Sitting increases pressure on lumbar discs and compresses the nerve root, especially with a rounded lower back. Many patients feel better standing or walking. Changing position every 20 to 30 minutes and using lumbar support often reduces symptoms. Short walking breaks help most.
Q: Should I stretch my hamstring if my leg hurts?
A: Be careful. Aggressive hamstring stretching pulls on an already irritated sciatic nerve and can worsen symptoms. Therapists typically use gentle nerve gliding techniques instead, which move the nerve without sustained tension, then reintroduce stretching once leg symptoms have settled. Ask before resuming aggressive stretching.
Q: Do I need a referral to start physical therapy in New Jersey or Connecticut?
A: Usually not. Both states allow direct access, so most patients can schedule an evaluation without a physician referral. Certain insurance plans, workers’ compensation cases and auto injury claims still require a referral, so our front desk verifies benefits before your first visit.
Q: What other conditions cause similar leg symptoms?
A: Several. A herniated disc is the most common source, while lumbar stenosis more often causes leg symptoms with walking that ease when you sit or lean forward. Hip arthritis and peripheral neuropathy can also mimic radiculopathy, so a thorough examination sorts these apart.
Nerve pain running down your leg is not something you must live with. A SportsMed therapist can identify which nerve root is involved, calm it with the right exercises, and build strength.
Book an appointmentor see all our locations.Reviewed by the SportsMed Physical Therapy clinical team. Last updated: August 2026.