The Flexion Rotation Test (FRT) is performed if C1-C2 dysfunction is suspected with associated cervicogenic headache.
Execution: The patient is in a supine position. The examiner passively maximally flexes the cervical spine followed by rotation to one side and then the other.
Outcome: Limited range of motion determined either by the patient reporting onset of pain or firm resistance encountered by the therapist. The cut off value of cervical rotation is 33 degrees, meaning if rotation is less than 33 degrees the test is considered positive.
Sensitivity ranges from 83%-90%
Specificity ranges from 88%-92%
(Hall et al. 2008)
See THESIS, section “Flexion Rotation Test” for further discussion.