What sciatica actually is
"Sciatica" is the umbrella term for pain that radiates from the lower back or buttock down the leg, following the path of the sciatic nerve. It's not a diagnosis on its own. The diagnosis is whatever's actually irritating the nerve — and getting that diagnosis right is the difference between meaningful relief and chasing your tail with generic stretches.
The pain typically runs down the back of the thigh, often past the knee, sometimes all the way to the foot. It can be sharp, burning, electric, deep ache, or some combination. There may be associated numbness, tingling or weakness. It's usually one-sided. Sitting often makes it worse. So can bending forward or coughing.
What's actually causing your sciatica? The four common culprits
1. Lumbar disc herniation
The most common cause we see at the Liverpool clinic. A disc between two vertebrae bulges or herniates, and the displaced material presses on or chemically irritates the nerve root as it exits the spine. The pain is real, the nerve is genuinely irritated — but the good news is that most disc herniations resolve substantially over 6-12 weeks with the right loading approach. Surgery is rarely needed.
2. Lateral recess or foraminal stenosis
Narrowing of the bony channels the nerve travels through. More common in patients over 50. Pain is typically worse with extension (standing, walking downhill) and eased by sitting or leaning forward. Different mechanical pattern, different treatment focus.
3. Piriformis syndrome
The piriformis is a deep buttock muscle that sits right on top of the sciatic nerve. When it's tight, hyper-toned or in spasm, it can compress the nerve and produce identical-feeling pain. This isn't a true "sciatica" — it's nerve irritation outside the spine — but it presents the same way and is commonly missed. We assess specifically for this on every sciatica intake.
4. Sacroiliac joint involvement
The SI joint can refer pain in a sciatica-like pattern in some patients. Specific tests differentiate this from true nerve root involvement.
How we assess sciatica at our Liverpool clinic
The first appointment is 30 or 60 minutes — and it includes both assessment and first-session treatment, not just diagnosis. It covers the full pattern of your symptoms, when they started, what makes them worse and better, and any associated changes (numbness, weakness, bladder/bowel — we screen for red flags every time). Physical assessment includes movement testing, specific neurodynamic tests (slump, straight leg raise, slump-knee-bend) to identify which nerve and at what level it's irritated, neurological screening (sensation, reflexes, strength), and tests that differentiate disc vs. piriformis vs. SI involvement.
You leave the first session with a plain-English diagnosis, a clear plan, hands-on treatment already started, and a realistic timeline. We don't talk in vague terms — we tell you what's going on and what we're going to do about it.
Treatment that actually works for sciatica
Loading the nerve, not protecting it
The instinct with nerve pain is to protect — rest, avoid movement, brace yourself. Modern physio understanding is the opposite for most cases: irritated nerves like specific, graduated movement. We teach you exactly what loading the nerve responds to, and how to progress it.
Directional preference exercises
Many disc-related sciatica patterns respond to a specific direction of repeated movement (often, but not always, extension). We assess for this on day one. When present, it's a powerful tool — patients often see their leg symptoms reduce noticeably in the first session.
Hip and glute retraining
Weak or poorly coordinated glutes change how your back loads — and how the piriformis sits on the sciatic nerve. Almost every long-running sciatica patient we see needs glute work as part of their rehab. Not generic "glute bridges" — specific patterns that address what your hip is actually missing.
Hands-on treatment as a tool
Joint mobilisation, soft tissue work and dry needling for the deep glute and piriformis can offer significant short-term relief and unlock the range needed for the exercises to be effective. We use it where it adds value.
Education and load management
Understanding what's safe (most things), what's risky (very little, properly graded), and what the recovery curve looks like makes the difference between patients who get better and patients who stay stuck.
The classic mistake with sciatica is to rest for two weeks, feel slightly better, then go back to exactly what you were doing before. That's how recurrence happens. Real recovery is about changing what your back and hip can tolerate.
When sciatica needs imaging or specialist referral
For most patients, MRI in the first 6 weeks doesn't change management. We do refer for imaging immediately if there's progressive weakness, significant unrelenting pain not responding to conservative care, signs of cauda equina syndrome (saddle numbness, bladder/bowel changes), or a clinical picture suggesting something other than typical mechanical sciatica. We work with local GPs, sports doctors and spinal specialists in South-West Sydney — referral pathways are smooth when they're needed.
Realistic timelines
Acute disc-related sciatica often improves substantially in 4-8 weeks with structured care. Recurrent or chronic presentations typically take 8-16 weeks to feel robust. Piriformis-driven nerve irritation can resolve faster — sometimes 2-4 weeks. We give you our honest read after the first session.
Booking your sciatica assessment in Liverpool
Same-week appointments available. You don't need a GP referral. The clinic is at Shop 4C/389-393 Hume Hwy, Liverpool NSW 2170, with free parking. Liverpool Station is a 25-minute walk, or a short bus from the station. We see patients from Liverpool, Casula, Moorebank, Chipping Norton, Cabramatta, Lurnea, Warwick Farm and across South-West Sydney.