Sciatica is one of the most uncomfortable conditions that brings patients through the door at Essential Health Clinic. The shooting, burning pain down one leg can make it hard to sit, stand, sleep, or walk. The encouraging news is that most sciatica responds well to conservative care, without surgery or long-term medication. Understanding what is causing yours is the first step to finding the right treatment.
What Is Sciatica?
Sciatica is not a diagnosis by itself. It is a symptom: pain that follows the path of the sciatic nerve. The sciatic nerve is the longest and widest nerve in the body. It originates from nerve roots in the lumbar spine (L4 through S3), runs through the buttock, down the back of the thigh, past the knee, and branches into the lower leg and foot.
When something compresses or irritates any part of this nerve, pain radiates along the path it follows. The pain can be sharp, burning, electric, or aching. It is usually felt on one side of the body. Numbness, tingling, and weakness in the affected leg are also common.
Sciatica is often confused with general back pain that radiates into the buttock, but true sciatica travels below the knee and is caused by nerve compression rather than muscle strain. Your practitioner will assess this distinction during your initial examination.
Common Causes of Sciatica
The treatment that works for your sciatica depends on what is causing it. The three most common causes are:
Lumbar disc herniation: When the outer wall of a spinal disc tears or weakens, the inner material can press against a nearby nerve root. This is the most common cause of true sciatica. Pain is often worse with sitting, bending forward, or coughing.
Piriformis syndrome: The sciatic nerve runs underneath (or in some people, through) the piriformis muscle in the buttock. When this muscle is tight or in spasm, it can compress the nerve. Pain is often worse with sitting, stair climbing, or activities that load the gluteal area. This is sometimes called "wallet sciatica" when a wallet in a back pocket puts pressure on the piriformis.
Lumbar stenosis: Narrowing of the spinal canal or the openings where nerve roots exit can compress the sciatic nerve roots. This cause is more common in adults over 50. Pain is often worse with walking and relieved by sitting or bending forward.
Other less common causes include a spondylolisthesis (vertebra slipping forward), or in rare cases, a tumour or infection. These require medical evaluation.
Chiropractic Care for Sciatica
Chiropractic is one of the primary conservative treatments for disc-related and joint-related sciatica. The goal is to reduce pressure on the affected nerve root by restoring movement to the lumbar spine and reducing the compression causing the nerve irritation.
Techniques vary by cause and severity. For disc herniation, the chiropractor will use lumbar mobilisation and distraction techniques that create space in the disc and encourage the displaced material to reduce. For joint-related compression, spinal adjustment restores normal movement to restricted segments. Flexion-distraction is a gentler technique often used for disc cases where standard adjustment is not appropriate.
Chiropractic for sciatica is typically delivered in a course of six to twelve visits depending on the severity and duration of symptoms. Patients who begin treatment within the first few weeks of symptom onset generally respond faster than those who have had ongoing sciatica for months.
Physiotherapy and Core Rehabilitation
Physiotherapy addresses sciatica through movement assessment, targeted exercise, and manual therapy. A physiotherapist identifies which movements aggravate versus relieve your sciatic pain, which provides important information about the mechanism and guides treatment.
Exercise rehabilitation is a central part of physiotherapy for sciatica. Specific exercises to stabilise the lumbar spine, strengthen the deep core muscles, and improve hip mobility reduce the load on the disc and nerve. This is particularly important for long-term recovery: even after the acute pain resolves, underlying weakness in the core and hips can allow the same problem to return.
Neural mobilisation is another physiotherapy technique used for sciatica. These are specific gentle movements designed to restore the sciatic nerve's ability to glide freely through surrounding tissues, which reduces sensitivity and improves function.
Massage Therapy for Piriformis-Related Sciatica
When the cause is piriformis syndrome, massage therapy is particularly well-suited to treatment. A Registered Massage Therapist can apply deep tissue techniques directly to the piriformis muscle, gluteal muscles, and surrounding hip structures to release the tension that is compressing the nerve.
Massage for sciatica also addresses secondary muscle guarding: the surrounding muscles that have tightened in response to pain and altered movement. Releasing this guarding improves circulation, reduces pain signalling, and allows the patient to perform rehabilitation exercises more effectively.
RMT treatment for sciatica works best in combination with chiropractic or physiotherapy rather than as a standalone approach, particularly when a spinal cause is also present.
Osteopathic Manual Treatment
Osteopathic manual practitioners take a broader view of how restrictions elsewhere in the body may be contributing to sciatic symptoms. Restrictions in the pelvis, sacrum, and hip joints that alter mechanics and increase load on the lumbar spine are a common finding in chronic sciatica patients.
Osteopathic treatment uses gentle mobilisation to address restrictions throughout the pelvis, lumbar spine, and hip region, improving overall mechanics and reducing the load on the affected nerve root. This approach is particularly useful for patients whose sciatica has been chronic, recurrent, or has not resolved fully with other care.
What Does Not Work for Sciatica
Complete bed rest is one of the most common patient responses to severe sciatica and one of the least effective. Brief periods of rest (one to two days) may be necessary when pain is severe and movement is very limited. Beyond that, bed rest consistently makes outcomes worse.
Without movement, the muscles supporting the lumbar spine weaken rapidly. The disc, already under stress, loses the support it needs. Neural pathways become more sensitised with prolonged inactivity. Most clinical guidelines for sciatica recommend returning to activity as soon as tolerable, with appropriate modifications.
Pain medication has a role in managing acute sciatica pain while other treatments take effect, but it does not address the compression causing the nerve irritation. Anti-inflammatory medication reduces inflammation around the nerve and can help with symptom management. It should be used as an adjunct to active treatment, not a substitute for it.
When to See a Physician
Conservative care resolves the majority of sciatica cases. However, certain presentations require prompt medical attention.
See a physician immediately or go to an emergency department if you experience: loss of bladder or bowel control, numbness in the groin or inner thighs (saddle anaesthesia), or significant sudden weakness in both legs. These are signs of cauda equina syndrome, which is a medical emergency that requires urgent imaging and possible surgery.
See a physician promptly if: your sciatica has not improved at all after six to eight weeks of consistent conservative treatment, your symptoms are worsening rather than improving, or you have significant leg weakness that is not recovering.
Imaging (MRI) may be recommended to identify the specific cause, particularly if surgical options need to be evaluated. Most patients do not need surgery, but knowing the anatomy of the problem guides treatment decisions.
Frequently Asked Questions
How long does sciatica typically last?
Acute sciatica from a disc herniation often improves within four to twelve weeks with appropriate conservative care. The nerve needs time to heal even after the compression is reduced, so some residual symptoms can persist beyond that window. Chronic sciatica (lasting more than three months) requires a more structured, longer-term rehabilitation approach.
Can I exercise with sciatica?
In most cases, yes, with the right exercises. Movements that increase sciatic pain (particularly forward bending and prolonged sitting) should be avoided initially. Walking is usually well tolerated and beneficial. Your physiotherapist or chiropractor will give you a specific exercise program that works with your presentation rather than against it.
Is heat or ice better for sciatica?
Both have a place. Ice is generally more appropriate in the first 48 to 72 hours after a flare-up or new onset of pain, to reduce inflammation. Heat is useful for the muscle guarding and stiffness that develops around the painful area. Many patients use ice first and transition to heat as acute inflammation settles.
Do I need a referral for chiropractic or physiotherapy in Ontario?
No. Both chiropractors and physiotherapists are primary contact practitioners in Ontario. You can book directly. Most extended health benefit plans cover these services without requiring a physician referral, though you should confirm with your specific insurer.
Can sciatica come back after it resolves?
Yes, particularly if the underlying factors that caused it (core weakness, disc vulnerability, postural habits) are not addressed during recovery. This is why rehabilitation exercise is an important part of treatment, not just passive care. Completing the full course of therapy and maintaining a home exercise programme significantly reduces the risk of recurrence.