Dr. Michael Magdy, Physiotherapist8 min read
What causes sciatic nerve pain and how physiotherapy helps.
Sciatica describes pain that follows the course of the sciatic nerve from the buttock down the back of the thigh, sometimes reaching the calf and foot. It is a symptom rather than a diagnosis, and the clinical task is to identify where along that pathway the nerve is being irritated. This article is for adults with leg-dominant pain, tingling or numbness who want to understand the condition and the realistic timeline for recovery.
A defining feature is that the leg symptoms usually matter more than the back symptoms. Patients frequently report that the back feels tolerable while the leg dictates how they sit, sleep and walk.
Common causes of sciatic pain
The most frequent source is irritation of a lumbar nerve root, typically at the fourth or fifth lumbar level, from disc material that has displaced posteriorly. Chemical irritation from the disc contributes as much as physical pressure, which is why symptoms can be severe even when imaging shows a modest protrusion.
Other causes include narrowing of the lateral canal in degenerative spinal stenosis, which classically produces leg symptoms on standing and walking that ease on sitting or leaning forward; compression of the nerve beneath a tight deep gluteal muscle; and irritation of the sacroiliac region referring pain into the posterior thigh. Prolonged driving, heavy repeated lifting and long periods of sitting on a wallet or hard surface all act as aggravating factors.
Warning signs that warrant seeing a specialist
Arrange an urgent medical review for numbness in the saddle area, difficulty starting or controlling urination, loss of bowel control, or symptoms appearing in both legs simultaneously. These may indicate cauda equina syndrome, which is a surgical emergency.
Also seek prompt assessment for progressive weakness such as a foot that catches on steps, pain following major trauma, fever with spinal pain, or a history of cancer. Severe pain that is completely unrelieved by any position deserves early review as well.
What physiotherapy specifically does for sciatica
Examination establishes the level of the affected nerve root through reflex, sensation and strength testing, identifies a directional preference — the movement direction that centralises symptoms towards the spine and away from the foot — and screens for the red flags described above.
Treatment then uses that directional preference as the core of the home programme, since movements that draw symptoms out of the leg reliably correlate with a better outcome. Neural mobilisation is introduced carefully to restore the nerve's ability to glide without provoking a flare, mechanical traction may be used where root compression dominates, and hip and trunk strengthening is added as irritability settles. Sitting tolerance, walking distance and the furthest point the pain reaches down the leg are tracked at each visit as objective progress markers.
Practical steps you can apply
Follow the centralisation rule
If a movement moves symptoms up towards the back, continue it. If symptoms travel further down the leg, stop that movement for now, even if it feels like a good stretch.
Change position frequently
Limit continuous sitting to around twenty minutes in the acute phase. Standing up and walking briefly reduces nerve root pressure more effectively than adjusting the chair.
Adjust your sleeping arrangement
Side-lying with a pillow between the knees, or lying on the back with a pillow beneath the knees, decreases tension on the nerve overnight.
Introduce gentle nerve gliding
From sitting, slowly straighten the affected knee and lower it again, ten repetitions, stopping well before strong pain. The aim is movement, not stretch.
Walk daily within tolerance
Short, regular walks maintain nerve mobility and circulation. Distance should be increased only when the previous distance does not worsen the leg the following morning.
Frequently asked questions
Will I need surgery?
The large majority of cases resolve without an operation. Surgery is considered for progressive neurological deficit, cauda equina signs, or severe pain that persists beyond several months of well-conducted conservative care.
How long does sciatica usually last?
Many patients improve substantially within six to twelve weeks. Recovery follows the leg symptoms retreating upwards, and residual back discomfort after the leg settles is a normal part of the sequence.
Is stretching the hamstring helpful?
Aggressive hamstring stretching often increases tension on an already sensitised nerve and can worsen symptoms. Controlled nerve gliding is preferred until irritability has reduced.
Conclusion
Sciatica has a favourable natural course when the aggravating movements are identified and the nerve is progressively desensitised rather than repeatedly stretched. For a structured plan based on your specific examination findings, book an appointment at Range Physiotherapy Clinic in Hurghada.
The information above is general educational guidance and does not replace a clinical assessment. Individual findings, medical history and imaging results change the plan considerably, so please have your own symptoms examined before acting on any recommendation.