The inclusion criteria are: Age 18–63 years; WAD grade 2–3 after a whiplash injury at least six months but not more than three years ago, QTF grade 2 includes neck complaints and musculoskeletal sign(s), grade 3 includes grade 2 plus neurological sign(s); Pain intensity > 20 mm on a 100-mm Visual Analogue Scale (VAS) [23 (link)] and/or > 20% on the Neck Disability Index (NDI, 0–100%) [24 (link)].
Exclusion criteria are: Known or suspected serious physical pathology, including myelopathy, spinal tumour, spinal infection or ongoing malignancy; Earlier fracture or luxation of the cervical column; Neck trauma with persistent symptoms from previous injury; Surgery on the cervical column; Neck pain that caused a > 1 month absence from work in the year prior to the WAD trauma; Signs of traumatic brain injury at the time of WAD (unconsciousness, retrograde or post-traumatic amnesia, disorientation or confusion); Generalised or more dominant pain elsewhere in the body; Diseases or other injuries that might prevent full participation in the study; Diagnosis of a severe psychiatric disorder; Known drug abuse; Insufficient knowledge of the Swedish language (inability to answer the questionnaires).
Exclusion criteria are: Known or suspected serious physical pathology, including myelopathy, spinal tumour, spinal infection or ongoing malignancy; Earlier fracture or luxation of the cervical column; Neck trauma with persistent symptoms from previous injury; Surgery on the cervical column; Neck pain that caused a > 1 month absence from work in the year prior to the WAD trauma; Signs of traumatic brain injury at the time of WAD (unconsciousness, retrograde or post-traumatic amnesia, disorientation or confusion); Generalised or more dominant pain elsewhere in the body; Diseases or other injuries that might prevent full participation in the study; Diagnosis of a severe psychiatric disorder; Known drug abuse; Insufficient knowledge of the Swedish language (inability to answer the questionnaires).