Veterinary Orthopedic Manipulation ( VOM) is also known as Veterinary Neuronal Adjustment or VNA.

This is a healing technology developed by orthopedic surgeon William Inman, DVM, CVCP. This technology identifies areas of the nervous system that have developed obstructions to nerve communication. The technique re-establishes neuronal communication, and thus induces healing by reducing these obstructions–also known as vertebral subluxation complexes( VSC).


VSC involves vertebra that may have fallen out of ideal alignment. A “complex” of affected components results in dysfunction. These components include the nerves originating from the spinal cord affected by this misalignment, and the resulting interruption of nervous signal transmission leading to pain, swelling, muscle spasm, edema, and adhesions (early scar tissue ).

The results of these VSCs may manifest in different symptoms. Depending on the degree of dysfunction, some joints may be completely “stuck” due to functional limitations from scar tissue and muscle spasms. Some joints may be movable in one direction or another and some may be affected with certain gaits or motions. A lay persons term for VSCs would be to simply say the joint is “out”.


Most trained chiropractors utilize a manual adjustment technique that can be very effective in reducing these subluxations. As with humans, on a rare occasion there can be damage to certain tissues. Incorrectly applied force or motion can potentially injure an animal if manual adjustment techniques are not applied correctly.

VOM or Veterinary Orthopedic Manipulation, is a painless, non-invasive technique that does not involve manually stretching the spinal ligaments and muscles.

It is important to note that prior to a VOM adjustment, a thorough evaluation would occur and involve utilization of palpation skills and careful placement of hands on and along muscle planes along the face and head, neck, spine, shoulders, haunches and extremities searching for trigger points, interruptions in symmetry and areas of heat or coolness.


VOM involves the use of a chiropractic tool called the Activator (also called Accelerometer). Subluxations are reduced by external application of a force of energy down dorsal spinous processes ( as well as transverse processes in the equine neck) of the vertebral column.
The VOM technology in trained hands provides the exact amount of force needed to reduce the subluxation, without causing damage to associated ligaments and tendons.

VOM is very accurate as it reduces ALL neuronal subluxations. VSCs exhibit a pathologic response similar to a “knee jerk” reaction when the Activator delivers a measured force over the vertebral spine. These areas correlate to where there are spinal misalignments or VSCs, due to the associated nerves, connective tissue, and muscles affected.


The Activator device utilizes Newtons Second Law of Motion:


The increased speed of the delivery of applied force replaces need for excessive motion needed to reduce the subluxation. An animals natural reflexive resistance to an adjustment is 20 milliseconds. The fastest a humans hands can deliver a manual adjustment is 80 milliseconds. The Activator delivers a measured force at a rate of 2-4 milliseconds. This is 5-10 X faster than the animals ability to resist adjustment.
The animal is painlessly adjusted every time, irregardless of their attitude or mood. Most animals enjoy the process. Horses lick and chew and lower their heads. Most dogs calmly stand, cats appear in a trance,( one cat actually falls asleep during the process). It is not uncommon for gas to be passed either by belching, or flatulence as neural communication and circulation are restored. This is why VOM is especially useful in colic, early gastric dilation, constipation and megacolon in cats.


The Activator is applied from the Atlanto-occipital region and continued along the cervical, thoracic, lumbar, sacral spine, iliums, and ischiums. The initial pass along the spine is called the Diagnostic Pass, as it can illustrate where the VSCs reside along the spine. The Activator will be applied 2-3 more times along the spine observing any changes to the pathological response ( knee jerk reaction ) or ” READs”.
More recently occurring VSCs may resolve in this time. Chronic issues may show a change in response. These changes can either be minimization of the response, or in some cases dramatization when uncovering “layers” of issues. The degree of change help determine the need for future visits. Some may resolve in 1 visit. Typically, the initial protocol may require 2-5 weekly visits.


An observed result may be witnessed immediately during or after adjustment. In some cases, response is noticed within the first week. Examples include now keeping up with the owner on walks or going up stairs previously avoided. In horses, an extended walk or trot, or picking up a correct lead can be observed. Since animals do not understand the concept of PLACEBO EFFECT, they only get better because they do feel better. Their responses are more measurable than humans for this reason.

The body compensates and then adapts to dysfunction. It can take several treatments to convince the body that the improved alignment overrides the previous adaptation.

A series of 2-5 weekly re-adjustments may be needed before no further change in Reads occur. The interval between treatments can be lengthened. This is where the animals response helps to dictate treatment intervals.


  • Acute and Non-acute, progressive and shifting leg lameness
  • Hip Dysplasia and Osteoarthritis
  • Intervertebral Disc Disease ( IVDD)
  • Progressive Myelopathies
  • Urinary and Fecal Incontinences
  • Stifle ( Knee) injuries
  • Wobblers Disease
  • Increaseed or Decreased Gastrointestinal Motility
  • Digestive Disorders, Constipation
  • Chronic Ear Infections
  • Performance and Behavioral Problems
  • Agility issues
  • Endocrine Issues
  • Performance Enhancement


Also contributing to the symptoms that result from the Vertebral Subluxation Complex , is the damage to the connective tissue that surrounds and envelopes all of our internal structures. This connective tissue is also called the Living Matrix.

When nerves exiting the spinal cord become impaired, muscles spasm, circulation is constricted, end organ systems are thus challenged. Nerves and vessels travel through the Living Matrix that surrounds muscles, tendons and ligaments. If there are adhesions or scar tissue within the connective tissue, nerve communication, circulation and lymphatics are impaired.

Myofascial Release involves techniques of rehabilitating these areas using superficial and deep tissue massage, as well as pulse therapy.

Along with manual and digital massage techniques, different tools can be used to supply varying degrees of pressure and vibration.

Examples of some of these tools used by Animobility include the Vibrostim and the Percussor.


The concept of rehabilitation at the spinal level using neuronal adjustment ( VOM), followed by rehabilitation at the connective tissue level ( Myofascial Release), and finally at the Cellular level ( Low Level Laser Therapy; Good Nutrition; Hydration ) allows the body to more effectively heal itself.

You can visit VOMtech.com for more information on this technology

Please see the information on LOW LEVEL LASER THERAPY!