Abdulwahab SS, Sabbahi M, Neck retractions, cervical root decompression, and radicular pain., J Orthop Sports Phys Ther, Jan;30(1):4-9, 1999
In a group of patients with neck and radicular pain a posture of sustained flexion caused a significant increase in peripheral pain and root compression as measured by H reflex amplitude. Repeated retractions caused a significant decrease in peripheral pain and decrease of nerve root compression.
Holmes B, Brazauskas R, Cassidy L, Weigand R, Factors in Patient Responsiveness to Directional, J Patient Cent Res Rev., 4, 2, 60-8, 2017
This was a retrospective chart review of 104 patients with cervical pain exhibiting direction preference (Cervical Derangements). The patients were treated by a chiropractor utilizing MDT. The study reported on the patient–related factors that predicted the responsiveness to treatment. Patient compliance, age>55, acute/subacute presentations and the experience of immediate symptom improvement were associated with a more successful patient outcomes.
Lam O, Dumas JP, Simon C, Tousignant-Laflamme Y, McKenzie mechanical syndromes coincide with biopsychosocial influences, including central sensitization: a descriptive study of individuals with chronic neck pain, J Man Manip Ther, Online Feb, 2018
This observational study looked at MDT classification of chronic neck patients at baseline and how they co-occured with some specific psychosocial measures. The majority of Derangements scored highly on these measures. Only baseline measures were taken, and thus the study was unable to determine if, as has been reported in the lumbar spine, psychosocial measures diminish with MDT management.
Murphy DR, Beres JL, Is treatment in extension contraindicated in the presence of cervical spinal cord compression without myelopathy? A case report, Man Ther, 13.468-472, 2008
Case report of patient with neck pain and peripheral numbness who lastingly abolished symptoms with cervical extension exercises despite MRI evidence of disc protrusions.
Schenk R, Bhaidani T, Boswell M, Kelley J, Kruchowsky T, Inclusion of Mechanical Diagnosis and Therapy (MDT) in the Management of Cervical Radiculopathy: A Case Report, J Man & Manip Ther, 16(1) E2-E8, 2007
Case report of patients with cervical radiculopathy whose symptoms centralise with repeated retraction and rotation, and then are abolished with repeated retraction and extension. Numeric pain rating scale and Neck Disability Index are reduced to zero at discharge and 3 month follow-up.
Spanos G, Zounis M, Natsika M, May S., The application of Mechanical Diagnosis and Therapy and changes on MRI findings in a patient with cervical radiculopathy, Manual Therapy, 18(6):606-610, 2013
Case report of woman with signs and symptoms of cervical radiculopathy and MRI showing a large disc herniation at the relevant level who was successfully treated with retraction extension exercises until she was symptom free. Shortly after this a repeat MRI showed a 56% reduction in the size of the herniation.