The CFRT is a reliable clinical tool for evaluating C1-C2 segment mobility, especially in patients with cervicogenic headaches or suspected upper cervical dysfunction. In this short video, observe how full cervical flexion followed by passive rotation isolates movement to the atlanto-axial joint, helping clinicians identify mobility restrictions with confidence. 📽️ Learn more about the technique and interpretation on Physiopedia, and explore the full video in the Physiopedia Plus library: 🔗 Ac

EXTENSION-ROTATION TEST FOR CERVICAL ARTERY DISEASE The vertebral artery supplies blood flow to the hindbrain and courses through the transverse foramina of the cervical levels from C6 to C1 and is tethered at foramina C2, C1 and the atlanto-occipital membrane. Abnomal stress (amongst others through cervical rotation) on this artery may lead to a reduction of blood flow to the hindbrain, which we call vertebrobasilar insufficiency or VBI– a condition that can develop into cerebral or brain stem