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SpineSpinal / Mechanical PainStrong evidence

Non-Specific Low Back Pain

Low back pain for which no specific serious structural cause is identified; management focuses on function, education and progressive activity.

PNA Clinical Visual Atlas

See this condition in 3D

Open the related anatomy and pathology visuals.

Open Visual Atlas

Structures Involved

  • Lumbar and lumbosacral tissues may contribute; routine clinical examination cannot reliably identify one pain-generating structure.

Mechanism / Why It Happens

  • Multifactorial interaction of loading, physical capacity, sleep, stress, health and contextual factors
  • May occur with lifting, prolonged positions or without a clear trigger

Classification / Grades

  • Acute, subacute or persistent by duration
  • With or without referred leg pain; distinguish radicular features and red flags

Symptoms

  • Lumbar ache or stiffness
  • Pain with lifting, bending or prolonged positions
  • Possible buttock/thigh referral without clear neurological deficit

Clinical Signs

  • Variable lumbar movement limitation
  • Functional guarding or reduced activity tolerance
  • Neurological screen typically normal in uncomplicated cases

Red Flags & Referral Clues

  • New urinary retention/incontinence, saddle sensory loss or bilateral progressive weakness
  • Fever, immunosuppression, cancer history or unexplained weight loss
  • Significant trauma, fracture risk or prolonged steroid use
  • Abdominal/vascular symptoms or systemic illness

Diagnostic Examination

How to perform the tests — step by step

Each test includes patient setup, therapist position, hand placement, exact performance, positive finding and clinical interpretation.

Neurological Screen of Lower Limbs

Check myotomes, dermatomes and reflexes where leg symptoms or neurological concern are present.

Patient position

Supine or seated; compare both sides and document each component.

Therapist position

Position yourself to observe and stabilise the relevant segment without forcing the movement.

Hand placement

Use comfortable, controlled contact appropriate to the test; avoid painful compression or excessive force.

How to perform

  1. 1Explain the test and obtain consent.
  2. 2Screen contraindications and compare sides when appropriate.
  3. 3Perform the movement slowly and apply only the required resistance or stress.
  4. 4Record familiar symptom reproduction, range, strength and side-to-side difference.

Positive sign

Reproducible myotomal weakness, dermatomal sensory change or reflex asymmetry.

Interpretation

A deficit requires correlation with history and consideration of nerve-root or other neurological pathology.

Clinical note: A special test modifies clinical probability; it does not confirm a diagnosis in isolation.

Differential Diagnosis

  • Lumbar radiculopathy
  • Cauda equina syndrome
  • Hip pathology
  • Vertebral fracture
  • Inflammatory or visceral causes

Investigations / Imaging

  • Do not routinely image uncomplicated low back pain.
  • Urgent assessment and MRI pathway for suspected cauda equina or serious neurological compromise; investigate other red flags appropriately.

Complete Rehabilitation Plan

From protection to full function

Phase 1 — Protection, Education & Symptom-Guided Loading

Address safety, settle excessive irritability and maintain useful movement.

What to do

  • Explain the common non-specific nature and favourable prognosis for many episodes
  • Encourage continued daily activity and avoid bed rest
  • Use comfortable movement and short walking bouts
  • Agree functional goals and address fear/avoidance

Exercise dosage

  • Walking: 5–15 minutes, 1–3 times/day as tolerated
  • Comfortable lumbar/hip movement: 5–10 reps, several times/day

Progress when

  • Daily function is stable or improving.
  • No new red flags or progressive neurological deficit.
  • Exercise response returns to baseline by the following day.

Phase 2 — Mobility, Strength & Capacity

Restore the specific strength, mobility and control required by the condition.

What to do

  • Progress trunk, hip and lower-limb strength according to deficits and goals
  • Use graded lifting, bending and aerobic conditioning
  • Individualise exercise rather than prescribe one supposedly corrective movement

Exercise dosage

  • Trunk/hip strengthening: 2–4 sets of 6–15 reps, 2–3 days/week
  • Aerobic activity: build toward regular weekly activity

Progress when

  • Target movement and resistance are tolerated with good quality.
  • Functional capacity is improving without sustained symptom flare.
  • Progression is based on objective performance and patient goals.

Phase 3 — Functional Restoration & Return to Activity

Rebuild real-world, occupational or sporting capacity.

What to do

  • Restore heavier lifting, work, caregiving or sport demands
  • Build capacity and confidence through progressive exposure
  • Create a sustainable activity and recurrence-management plan

Exercise dosage

  • Task-specific lifting: 2–4 sets, gradually increasing load and range
  • Progress weekly volume based on function and 24-hour response

Progress when

  • Condition-specific return criteria are met.
  • Full task exposure is completed progressively.
  • No clinically meaningful deterioration during the following 24 hours.

Manual Therapy — Role & Application

  • Spinal or hip manual therapy may be offered as an adjunct for short-term relief in selected patients.
  • Pair manual therapy with exercise and self-management; do not claim to reposition vertebrae or correct a presumed lesion.

Modalities — Use / Avoid

  • Heat may be used for temporary symptom relief if helpful.
  • Avoid routine traction, passive electrotherapy or prolonged rest as core treatment.

Return / Discharge Criteria

  • Daily activities and work tasks resumed or modified safely
  • Progressive lifting and walking tolerance
  • Independent self-management and confidence

Common Clinical Mistakes

  • Routine imaging without red flags
  • Overemphasis on posture, alignment or a single painful tissue
  • Bed rest and fear-based advice
  • Ignoring psychosocial barriers or neurological changes

Clinical Pearls

  • Use a biopsychosocial formulation without implying symptoms are imaginary.
  • Re-screen if new bladder, saddle, systemic or progressive neurological symptoms develop.

Continue learning

Connect assessment with management

Use the related PNA learning pathways to explore examination techniques and structured rehabilitation. A test result should always be interpreted alongside the history, full examination and clinical presentation.

Evidence sources

Use these sources as a starting point for clinical learning. A reference being listed here does not, by itself, establish that every recommendation on this page is strongly supported. Check the original publication, study design, population and limitations before applying findings to an individual patient.

Educational resource only. Tests and treatment plans must be adapted to the individual patient, irritability, comorbidities, surgical restrictions and local scope-of-practice requirements.