MLS · Mastery, Love & Service

MLS, short for Mastery, Love and Service, is a chiropractic adjusting approach built on two rules. It sets the spine at ease instead of at tension before the thrust. It then drives the correction along an arc matched to that joint’s own facet glide, never a straight line. Arno Burnier, D.C., developed it in 1984. The Unified Model of Tone reads both rules as claims about correspondence.

MLS adjusts into ease, which reverses the setup most chiropractors are taught

MLS calls its setup position physiological peace. The neck stays close to neutral and the body stays settled, so the joint still holds its slack when the thrust arrives. The standard high velocity setup removes that slack. In cervical work it means laterally flexing and rotating the neck over the contact until the joint sits at its barrier, which the manuals call pre-stress. Diversified carries the joint to its barrier in every plane before the thrust. MLS does the opposite.

Burnier’s stated reason was mechanical. A spine already loaded to its limit has nowhere to put the force. MLS teaches that a thrust into a pre-tensioned segment tends to displace that tension sideways rather than resolve it, and can leave a new distortion where the tension lands. Burnier described the method as one that “brings a body into ease always rather than tension.”

Ease describes the position, and MLS has held it apart from force since 1984. The setup spends none of the body’s remaining slack. The thrust then spends whatever force that segment requires.

MLS holds that there are no straight lines in the body, so no thrust is a straight line

A joint that articulates is anchored in more than one place, so it travels an arc and never a slide. MLS therefore teaches the correction as a curve matched to the joint that receives it. Instructors call this reading and driving the arc, and the curriculum organizes it as arcs, vectors of drive, and the MLS 5-Part Vectoring System for L1 through L5.

The cervical arc changes at every level of the neck

With the person supine, the contact is the inside of the index finger on the lamina-pedicle junction or another solid point on the vertebra. The thrust carries three components at once: posterior to anterior, inferior to superior, and lateral to medial. They combine into one curve instead of firing as three separate directions. MLS teaches that the proportions shift by segment because the facets do. The occiput and atlas facet planes sit much closer to horizontal, so the arc runs more laterally. The C7 facets sit at a far steeper angle, so the arc runs toward the opposite shoulder.

The anatomy supports the premise. Pal, Routal and Saggu measured 30 adult vertebral columns (J Anat, 2001). Superior facet orientation flips from facing posteromedially to facing posterolaterally somewhere between C4 and T1. C6 is the most common level for that change. The facet surface itself becomes transversely elongated by C7 and T1. A neck does not present one joint plane repeated seven times.

The thoracic arc reverses across its own length

With the person prone, MLS teaches the upper thoracics as a superior to inferior drive combined with posterior to anterior. The thrust begins toward the neck and points toward the feet while traveling from back to chest. The middle thoracics are mostly straight posterior to anterior. The lower thoracics reverse the upper: inferior to superior combined with posterior to anterior, running from the feet toward the neck. The middle of the thoracic spine is the neutral case and the two ends mirror each other.

Lumbar and sacral arcs follow the facet angle at that segment

The lumbar facets vary segment by segment in the same way, and MLS builds the drive from the angle at which that particular joint glides. The sacrum has its own arc for the same reason. A house vector applied everywhere would defeat the premise. The curve comes from how the specific joint under the hand prefers to move, which is why MLS treats the arc as something read off the joint, never recalled from memory.

MLS started with a motorcycle crash in France and a body that would not tolerate force

An amateur motorcycle race ended in a crash that left Arno Burnier with chronic migraine and no sensation down the right side of his body. He was born and raised in Paris, and had spent two years at René Descartes medical university and a year in a hospital cancer service. By his own count France then held roughly 90 chiropractors for a population of 55 million, and he had never heard of the profession.

A Paris chiropractor took the case and sent him to Sherman College of Straight Chiropractic. Burnier left for Spartanburg, South Carolina in the fall of 1973, entering with the college’s first class. Thom Gelardi had founded the school in January of that year. Burnier graduated in 1977 and practiced in Yardley, Pennsylvania for about 20 years.

Burnier reverse engineered his own hands

Burnier said his own constitution was unusually sensitive, and that being adjusted by other chiropractors felt like force applied against him rather than for him. He had learned to adjust largely by watching, and did it well without being able to say how. Turning that into something teachable took years of breaking the movement into separate ingredients and steps. MLS is that decomposition. He began teaching adjusting seminars in 1983 and dated the method itself to 1984.

The MLS analysis selects the segment with the widest window of invitation

Three or four distortions are usually present at once, and MLS goes to the one with the widest window of invitation instead of the largest finding. The reads are ordinary and physical: the breath, the eyes, a slight change in the face, the way the tissue yields under the hand. Instructors describe the arc itself as legible in the creases of the neck, and note that the left and right sides read differently because the person has moved that way since before birth.

MLS names its listings out loud and takes them from the Palmer vocabulary: spinous pivot body right, spinous pivot body left, entire segment left, entire segment right. Instructors point out that B.J. Palmer mechanized that vocabulary so it could be taught at scale, while D.D. Palmer had described the same findings in tonal terms. MLS keeps the mechanical listing and treats it as the surface reading of a distortion running through the whole system.

After a single input, MLS teaches an immediate recheck. The claim is that clearing the invited segment releases the others without further contact, and that the remaining windows open once the system has been met where it agreed to be met. The counterpart is a list of practitioner faults that close the window: heavy mental activity, attachment to the outcome, projection, and taking the response personally.

Spinal BioDynamics is the analysis, and visualization is the step before contact

Burnier taught the analysis as its own seminar under the title Spinal BioDynamics and Visualization. Sherman College now carries it as a 9-hour on-demand continuing education course under his name. The structure he taught was an extensive neuro-spinal analysis on the first visit, then a quick scan plus pre-adjustment and post-adjustment monitoring on every subsequent visit.

Visualization came to him from Lyle W. Sherman, assistant director of the B.J. Palmer Chiropractic Research Clinic in Davenport and the man Gelardi named the college after. Sherman read stereoscopic radiographs and taught Burnier to picture what sat between two segments before delivering a thrust. Burnier’s rule for his own students was that the practitioner must hold a clear picture of the joint under the hand before the thrust. The picture is part of the procedure, not a preliminary to it.

The MLS setup targets the dura and the cord as much as the joint

MLS instructors call the target the tonal-meningeal system, and teach the dural attachments as part of the technique’s anatomy. The dura anchors at the foramen magnum, at the bodies of the second and third cervical vertebrae where it blends with the posterior longitudinal ligament, and at the sacrum. It adheres dorsally to the posterior arch of the atlas and the lamina of the axis. Roughly 21 pairs of denticulate ligaments suspend the cord inside the dural sleeve.

Alf Breig established in 1978 that the spinal cord is a tensioned structure, and that raised tension rather than compression carries the primary neurophysiological consequence. Groen and colleagues documented the innervation of the spinal dura in 1988 (Acta Neurochir). Neither Breig nor Groen studied MLS. Burnier took the consequence seriously: if the setup tensions the membranes, the cord’s mechanical environment changes before the thrust ever arrives. Burnier answered that by keeping the segment slack.

Those attachments make the top of the neck the most direct mechanical access to the dura. In 1995 Hack and colleagues described a connective tissue bridge running from the rectus capitis posterior minor to the dura at the first two vertebrae (Spine). Zheng and colleagues found the same bridge in every mammal they examined in 2017 (Sci Rep). Suboccipital tone and dural tone are mechanically the same variable at that level.

The MLS thrust is small, fast, and driven from the legs

MLS separates amplitude from speed. Instructors use “little bitty” for the size of the movement and are explicit that it does not mean slow and does not mean shallow. The contact can be the tip of a finger. The drive behind it is full. Recorded force-time data across 12 cervical studies put thrust durations at 90 to 130 milliseconds (Gorrell et al., Chiropr Man Therap, 2023). Cervical peak forces in that same review ran from 41 to 407 newtons. MLS works inside that window, and its teaching concerns where in the range a given joint belongs.

Side posture holds the person with the operator’s legs, leaving the hands free

The side posture setup is taught as a template that each practitioner then adapts to their own build. The person’s shoulders sit slightly off the edge of the table. Their upper leg rests on the operator’s back leg or front leg depending on the size difference between the two bodies. The operator secures the person with their own legs and torso instead of holding with the hands, which leaves the hands free and quiet. Lumbar lordosis is taken out by using the bottom leg as a lever and bringing it forward. If the bottom leg dangles, the pelvis moves back.

Two details carry the ease principle into the setup itself. The support hand does not move once placed. And the operator keeps their own weight off the person, so that positioning does not compress the recipient into the table before the adjustment begins. Instructors also watch for torsion and traction introduced accidentally, such as when a headpiece drops away under a person who was already settled.

The adjustment comes from the ground up

MLS teaches that most of the adjustment comes from the legs, with the upper body acting as a stable frame that finishes the movement. Footwork is drilled on both sides. Burnier trained the drive itself as an athletic capacity and did push-ups every morning to keep fast-twitch recruitment available in his triceps. The comparison he used was to musicians and martial artists, who train the movement far past the point of competence.

Mastery, love and service name what MLS asks of the practitioner

The three words describe a practice discipline, not a set of beliefs. Mastery means the adjustment is broken into its separate parts and drilled outside clinic hours, at the volume a professional musician or athlete would accept. Love means the practitioner’s attention and connection are treated as part of the procedure. Romain Cardinal, a 2019 IFEC Paris graduate who teaches MLS in France, phrases the distinction as working with the person rather than on them. Service means the practitioner’s own state is prepared before the person arrives.

The teaching format came from a practical problem. Burnier’s philosophy talks drew small rooms, and his adjusting seminars filled. So he taught the philosophy inside the adjusting seminar, which is why an MLS weekend still covers both. The pattern has held since 1983.

Burnier refused to teach subluxation as staged degeneration

Grading subluxation into stages of degeneration hands the patient a disease to eradicate, and Burnier objected that it makes the whole conversation about damage. His own rule was to describe the work as opening the channel, and to keep the explanation short enough that a person could repeat it back.

The imaging record supports his refusal to read degeneration off a film as a symptom explanation. Brinjikji and colleagues pooled 33 studies covering 3,110 people with no symptoms at all (AJNR, 2015). They found disk degeneration in 37% of 20-year-olds and 96% of 80-year-olds. Disk bulges appeared in 30% and 84% of the same groups. Current MLS faculty read subluxation instead as potential energy stored in the system, a formulation they attribute to Sue Brown of Bio-Geometric Integration.

Where MLS meets the Unified Model of Tone

MLS and the Unified Model of Tone reach the same conclusion from different directions. Burnier reached it by hand over about 40 years of practice and teaching. The model reaches it from the physiology of how a nervous system registers an input. The two agree that what an input does depends far more on its fit than on its size.

Arcing into the joint’s own glide is specificity as correspondence

The model holds that specificity is correspondence between the structure of an intervention and the pattern the body is holding. An input can only correspond to a pattern that has first been found. MLS matches the geometry of the thrust to the geometry of the joint receiving it. The input is shaped like the structure it enters, from the near-horizontal atlas to the steep C7 to the reversing arcs of the thoracic spine. That is correspondence in its most literal form.

Ease at the setup is a bid on input quality, not on gentleness

The model holds that force beyond what the system needs to receive the message degrades the message, and that force short of what it needs fails to deliver it. MLS separates the two variables that most methods bundle together. The setup gives up nothing of the body’s available slack. The thrust then supplies exactly the drive that segment calls for, which on a locked upper cervical joint can be considerable. Reading MLS as a soft technique misses the claim it is actually making.

The practitioner is inside the loop being read

The same contact is an assessment and an intervention in one motion, because the body’s registration of itself sits inside the loop it reports on. Palpation changes the tissue palpated, and attention changes autonomic and sensory processing. Burnier taught presence and visualization before contact, and named heavy mental activity and attachment to outcome as the things that close a person’s system. Both are claims about the quality and specificity of the input, not about the practitioner’s mood.

MLS layers onto other techniques because there is no single lynchpin

Burnier stated plainly that MLS is not a technique. He held it to be an approach that overlays upper cervical, knee-chest and side posture work. He said the same of full spine, Gonstead and Network practice, and he taught it that way. The Unified Model of Tone holds that there is no single lynchpin, and that an input can reach the whole system from many places. Those two positions fit. A method that can be applied through any doorway is what a no-lynchpin model predicts should exist, and Burnier built one before anyone described why it should work.

What the model predicts about MLS

Two predictions follow, and they belong to the model, not to Burnier. First, hold peak force and thrust duration equal and compare a slackened setup against an end-range setup. The model predicts measurably different autonomic and cortical responses, with the larger change away from the contact site following the slackened setup. Second, a measure of the practitioner’s own state taken before contact will account for variance in the recipient’s autonomic response that delivered force does not explain. Both are stated in advance and both can fail.

MLS is carried forward by a named staff and a three-step curriculum

Burnier taught his final seminar in Paris in the fall of 2018 and handed the work to senior staff in Europe and North America. He died on July 21, 2024. Wade Port, D.C. now leads MLS Seminars and owns Lifeworks Chiropractic in Marietta, Georgia. Port studied under Burnier beginning in 2003 and has taught chiropractors for over two decades.

The curriculum runs in three steps. MLS ONE Catalyst is the 14-hour foundational weekend covering arcs, vectors of drive and the 5-Part Vectoring System. MLS TWO Ignite adds upper cervical specificity and toggle work. Kaleb Scroggin, D.C. co-created MLS PEDS SPARK, which extends the method to pediatric and perinatal care.

Jim Deegan, D.C. has learned from Burnier since 1995 and teaches on staff. Emily Mayo, D.C. practices in San Diego and Nathan Gerowitz, D.C. near Chicago. Zach Thomas, D.C. and Michael Taieb, D.C. also teach, alongside Romain Cardinal, D.C. of Paris.

Charles Leroux, D.C. teaches MLS in France and Canada and names Burnier as his personal mentor. He is a graduate of the Université du Québec à Trois-Rivières, owns the Centre chiropratique familial Au Printemps de la Vie in Mont-Saint-Hilaire, Quebec, and is a founding member of Chiropratique Sans Frontières. A Paris seminar he and Burnier promoted in 2020 had more than 120 registrations.

MLS runs back to Lyle Sherman and forward into other adjusting cultures

Lyle W. Sherman gave Burnier visualization and the toggle. Reggie Gold gave him full spine work in an accelerated course during his final quarters at Sherman College, and chiropractic philosophy most mornings for three or four years. Gelardi gave him the school. Burnier then ran Master Piece Training Camp for about 14 years. The six-day intensive was staffed alongside Sue Brown, Jay Komarek and Lou Corleto.

Downstream, Kairos Training Culture names Burnier among its mentors, crediting him with introducing the concept of ease within the adjustment and with refining precision through clarity rather than force. Founders Brett Jones and Lance von Stade also name Sue Brown, Marvin Talsky, Jay Komarek and B.J. Palmer on the same list. Burnier appears there as one named influence among several, which is acknowledged mentorship rather than a formal branch of MLS.

How this page relates to the rest of the library

Diversified is the direct contrast. It takes the joint to its barrier in every plane and removes the slack. That is the setup MLS was built to reverse. Blair Upper Cervical reaches the same conclusion about joint planes from the other end. Blair establishes each person’s individual articular angles radiographically, where MLS establishes each segment’s glide by hand. Bio-Geometric Integration supplies the reading of subluxation that current MLS faculty use, since Sue Brown’s account of stored potential energy is what they name. Network Chiropractic is the other method built on meningeal tension. Burnier credited Donald Epstein with showing him how to clear the neuro-spinal system. Torque Release Technique sits at the far end of the force range, with an instrument delivering a fixed small impulse. It makes the same wager MLS does, that correspondence and not magnitude decides the result.