Diagnostic Accuracy and Clinical Integration of Physical Examination for Cervical Radiculopathy

Evidence from Systematic Review

A systematic review reported that physical‑examination tests have limited diagnostic precision for cervical radiculopathy when compared with imaging or surgical reference standards, indicating modest overall accuracy. 1

Physical‑examination findings must never be used in isolation; they should be interpreted together with the patient’s history, dermatomal pain distribution, and specific motor‑or‑sensory deficits to reach a reliable diagnosis. 2
The first essential step in evaluation is to identify the dermatomal pattern of pain and any corresponding motor or sensory deficits. This clinical mapping guides subsequent testing and management. 2

Diagnosis should not rely solely on imaging, because magnetic resonance imaging frequently shows foraminal stenosis in asymptomatic individuals, leading to a high false‑positive rate. Clinical correlation is therefore mandatory. 2
MRI findings often do not correspond to the level identified by the clinical examination; clinicians must prioritize the clinical level over imaging when discrepancies arise. 2
When MRI demonstrates multilevel foraminal narrowing but the clinical exam isolates a single symptomatic level, the clinically identified level should be given precedence in treatment planning. 2

The strongest agreement among clinical examination, electromyography, and MRI is observed for C6‑level radiculopathy (approximately 70% concordance), followed by C7 (≈ 67%) and C5 (≈ 50%), underscoring the continued central role of the physical exam in level localization. 2