“…For example, Budgell et al used a computer-driven manipulator attached to the C2 spinous process of a rat and incorporated a friction-clutch mechanism to prevent unwanted displacement of the C2 vertebra. 31 Reed et al attached a pair of rigid, adjustable, toothed forceps to the lateral surfaces of the L5 spinous process via an incision and then delivered computer-assisted manipulative thrusts. 32 Although these methods are certainly impressive in their engineering design and can apply the appropriate manipulative forces very accurately, these techniques are invasive and rely on motors and computers to calculate and generate force.…”