The focus of orthomanual medicine is on normal positions of components of the skeleton and symmetry of the spine. A misalignment of skeletal components can cause loss of function, movement limitations and pain. Orthomanipulation (ortho (Gr.) meaning "right" or "correct") can be defined as a manipulation by applying a pulsating force and / or a fast impulse on a bony part of the spine with abnormal position / function, using a small lever within a segment, in the direction of the natural position and function. Misaligned vertebrae or joints generally require little force to be pushed back into their original positions, because the force is applied in the direction of the natural position and function. (Reference: Van de Veen et al Variance in Manual Treatment of Low Back Pain nonspecific between Ortho Physicians Manual, Manual Therapists, and Chiropractors, Journal of Manipulative and Physiological Therapeutics, 2005, vol. 28).