Table 5.

Proposed subgroup overlap

Flexion oriented provocation	Rotation/Side-bending/Side-gliding oriented provocation	Extension oriented provocation
MDT-Derangement (posterior) or Dysfunction (flexion) or Postural	MDT-Derangement (lateral shift) or Dysfunction (lateral shift)	MDT-Derangement (anterior) or Dysfunction (extension) or Spondylolisthesis
PBC-Disc syndrome or Postural or Dysfunction (flexion)	PBC-Disc syndrome (lateral shift) or Nerve root compression or Dysfunction (lateral shift)	PBC-Disc syndrome or Nerve root compression or Spinal stenosis or Zygopophyseal joint or Dysfunction (extension)
TBC-Specific exercise (extension) or Stabilisation or Manipulation or Traction	TBC-Specific exercise (side-glide) or Manipulation or Stabilisation	TBC-Specific exercise (flexion) or Stabilisation or Manipulation
MSI-Flexion	MSI- Rotation, Rotation with Flexion or Extension	MSI-Extension
OCS-Control-Flexion or Movement-Flexion	OCS-Control-Lateral shift or Multidirectional or Movement-Flexion or Extension with Rotation/Side bending	OCS-Control-Active or Passive Extension or Movement-Extension