“…4 Inconsistencies may be attributable to the fact that mechanical neck pain is a heterogeneous pain condition, and it is commonly seen in clinical practice that not all patients with mechanical neck pain benefit from the same intervention. 10 Recently, there have been a number of studies identifying the prognostic variables to guide interventions for the management of low back pain, 11 tension-type headache, 12 ankle sprains, 13 cervicogenic headache, 14 and shoulder pain. 15 Two of these studies purported to identify predictors for identifying patients with neck pain who will benefit from either cervical 16,17 or thoracic 18 spine manipulation.…”