Cervical special tests are most useful when chosen to confirm or refute a hypothesis from the subjective history - radicular arm symptoms point to the radiculopathy cluster, while trauma or rheumatoid history raises the priority of instability and screening tests. This guide groups the tests that change management, with how to perform each one and how to interpret a positive or negative result.
Wainner's cluster combines four findings - interpreting them together is far more useful than any single test. Three or four positive findings substantially raise the probability of cervical radiculopathy.
Prioritise screening when there is a history of trauma, rheumatoid arthritis, Down syndrome, or post-surgical change before applying end-range techniques.
Wainner's cluster (Wainner et al., 2003) is a four-item test-item cluster for cervical radiculopathy: a positive Spurling's test, positive cervical distraction, positive upper limb tension test A (median bias), and cervical rotation of less than 60° toward the symptomatic side. Three or four positive findings substantially raise the probability of cervical radiculopathy; a fully negative ULTT A makes it unlikely.
Both narrow the intervertebral foramen. Spurling's test adds axial compression to side-bending toward the painful side and is the more studied, highly specific test for radiculopathy. The cervical quadrant test combines extension, side-bending and rotation toward the same side without compression; it can provoke foraminal or facet joint pain, so local neck pain points toward the facet, while radiating dermatomal arm pain points toward the nerve root.
Choose tests from your history. Radiating arm symptoms call for the radiculopathy cluster (Spurling's, distraction, ULTT A, rotation range). Trauma or rheumatoid history makes upper cervical instability screening, such as Sharp-Purser, the priority before any end-range techniques.
Side-bend the neck toward the symptomatic side and apply gentle axial compression through the top of the head. Reproduction of radiating arm pain suggests nerve root involvement. It is specific but not sensitive, so a negative result does not rule radiculopathy out.
Gentle sustained upward traction that reduces radiating arm symptoms suggests a compressive radiculopathy that eases when the intervertebral foramen is opened. It is a useful confirmatory item within the radiculopathy cluster.
Prioritise instability screening, such as the Sharp-Purser test, when there is a history of trauma, rheumatoid arthritis, Down syndrome, or recent cervical surgery. A positive screen warrants onward referral and imaging rather than further provocative testing.