Cervical Radiculopathy: The Wainner Clinical Cluster, Spurling Test, and Traction Protocols
In short
Wainner's 4-test cluster achieves a 99% specificity for cervical radiculopathy; manual distraction and nerve root gliding safely relieve radiating arm pain.
In this guide (4 sections)
Pathogenesis and Mechanical Irritation of Cervical Nerve Roots
Cervical Radiculopathy is a pathological neuro-compressive condition affecting the cervical nerve roots (most commonly C7 [60% of cases] and C6 [25% of cases]). Driven by posterolateral cervical disc herniation in younger adults or uncovertebral (Luschka) and facet joint osteophytic foraminal stenosis in older populations, the mechanical encroachment triggers severe intraneural edema, microvascular ischemia, and local neurogenic inflammation.
Patients present with sharp, lancinating, dermatomal arm pain accompanied by paresthesias, sensory loss, diminished deep tendon reflexes, and myotomal motor weakness (e.g., wrist drop in C7, biceps weakness in C5-C6). Accurate clinical diagnosis requires isolating radicular pathology from peripheral nerve entrapments (e.g., carpal tunnel syndrome) or shoulder rotator cuff tears.
Wainner's 4-Test Clinical Prediction Rule (CPR) Matrix
| Diagnostic Test in Cluster | Patient Examination Technique | Positive Test Criteria | Diagnostic Predictive Value | |
|---|---|---|---|---|
| 1. Spurling Test A (Compression) | Side-bend neck toward painful side; apply 7 kg vertical axial load | Sharp, shooting dermatomal pain radiating down ipsilateral arm | High specificity (~93%); low sensitivity | |
| 2. Cervical Distraction Test | Patient supine; examiner applies gentle 10-15 kg axial cranial traction | Significant relief or complete elimination of radiating arm pain | High specificity (~90%); confirms mechanical foraminal widening | |
| 3. Upper Limb Tension Test (ULTT-1 / Median) | Shoulder depressed, abducted 110 deg, wrist/finger extended, supinated | Reproduction of symptoms; contralateral neck side-bending worsens pain | Highest sensitivity (~97%); negative test rules OUT radiculopathy | |
| 4. Cervical Rotation < 60 degrees | Active rotation measured via goniometer toward symptomatic side | Restricted rotation < 60 degrees from neutral midline | Reflects ipsilateral facet guarding and foraminal narrowing | |
| Wainner Predictive Scoring | 3 of 4 tests positive -> Positive Likelihood Ratio = 6.1 (65% probability) | 4 of 4 tests positive -> Positive Likelihood Ratio = 30.3 (99% probability) | 4 of 4 positive confirms cervical radiculopathy with near certainty |
Standardized Clinical Physiotherapy and Traction Protocols
- Intermittent Mechanical Cervical Traction Parameters: Position the patient supine with neck flexed 20 to 25 degrees (to optimize foraminal opening); initiate traction at 10 to 12 lbs, titrating gradually up to 15 to 20 lbs; utilize an intermittent 30-second pull / 10-second rest cycle for 15 minutes.
- Cervical Retraction and Contralateral Lateral Gliding (McKenzie): Prescribe repeated seated cervical retractions ('double chin') followed by gentle lateral glides away from the painful arm; this directional preference maneuver unloads the posterolateral disc fragment, driving centralizing relief.
- Median and Radial Nerve Gliding (Flossing): Coach the patient in gentle neural sliders; extend the wrist while side-bending the neck toward the hand (slacking the proximal root while gliding the distal nerve); avoid aggressive tensioning during acute nerve inflammation.
Frequently Asked Questions
What is cervical radiculopathy (pinched nerve in the neck)?
Cervical radiculopathy happens when a bulging disc or arthritic bone spur in your neck presses against a spinal nerve root. This sends sharp, shooting electric shocks, burning pain, and numbness down your shoulder, arm, and fingers.
What is the Spurling test and why does it reproduce arm pain?
In the Spurling test, the doctor gently tilts your head toward your sore side and presses down lightly on top of your head. If this instantly sends shooting pain down your arm, it proves the narrow nerve hole in your neck is pinched.
How does neck traction help relieve a pinched nerve?
Gentle mechanical traction uses smooth pulling force to stretch your neck bones a few millimeters apart. This immediately widens the tiny holes where nerves exit, taking the crushing pressure off the inflamed nerve and giving instant pain relief.
Related condition guides
Related recovery guides & articles
BookPhysio.in Editorial Team
The BookPhysio.in editorial team writes and maintains this content, checking it against reliable clinical sources. Content follows our medical review policy: general information only, and no page claims a clinical review until a named registered physiotherapist has signed it off.
Read our medical review policy