NAG and SNAG Techniques: Definition, Steps, Benefits, and Evidence (Mulligan Concept)
NAG and SNAG Techniques: Definition, Steps, Benefits, and Evidence (Mulligan Concept) The Mulligan Concept , developed by Brian Mulligan, is one of the most widely used manual therapy approaches for treating musculoskeletal pain and restricted movement. Two of its key techniques— NAG (Natural Apophyseal Glide) and SNAG (Sustained Natural Apophyseal Glide) —are especially effective for spinal dysfunctions, joint stiffness, and movement-related pain. What Are NAG and SNAG Techniques? NAG (Natural Apophyseal Glide) NAG is a manual oscillatory mobilization applied to the facet joints (apophyseal joints) of the spine—mainly the cervical and upper thoracic levels. How it works The therapist applies a forward-upward (anterior + cranial) glide to the articular pillar. The glide is rhythmic, pain-free, and passive . It targets joint stiffness, facet hypomobility, and pain. Best for: Cervical stiffness Painful cervical ROM Cervical spondylosis Postural neck pai...