Is it time to stop functional pre-manipulation testing of the cervical spine?

Area of Science:

• Neuroscience
• Vascular Surgery
• Musculoskeletal Medicine

Background:

• Cervical spine manipulation may affect vertebral artery blood flow, potentially causing narrowing.
• Pre-manipulation testing of the cervical spine is used by manual practitioners to assess vertebral artery injury risk.
• The validity of these provocative tests remains controversial despite widespread clinical use.

Purpose of the Study:

• To discuss the clinical utility of functional pre-manipulation testing for vertebral artery pathologies.
• To provide recommendations for practitioners regarding vertebral artery dissection, spasm, or stenosis.
• To evaluate the effectiveness of provocative testing in assessing manipulation-induced vertebral artery injury.

Main Methods:

• Review and discussion of existing literature and clinical practices concerning functional pre-manipulation testing.
• Analysis of the diagnostic value of provocative tests in specific clinical scenarios.
• Formulation of evidence-based recommendations for patient assessment and management.

Main Results:

• Vertebral artery dissection (VAD) may present solely as pain, without brainstem ischemic signs.
• Provocative testing is unlikely to yield useful diagnostic information for stenotic vertebral artery pathologies or VAD.
• Functional testing offers minimal value in predicting manipulation-induced vertebral artery injury in asymptomatic patients.

Conclusions:

• Thorough patient history and physical examination are essential for identifying potential vertebral artery dissection.
• Provocative pre-manipulation tests should be avoided if VAD is suspected; patients require appropriate referral.
• Functional testing has limited utility in assessing vertebral artery integrity before spinal manipulative therapy.