The History and Evolution of Manual Therapy

INTRODUCTION

The impulse to relieve suffering through touch is among the oldest of human instincts. Long before any formal system of medicine existed, people in communities across the world discovered that pressing, stretching, and repositioning the body could alleviate pain and restore function. From the shamans of Central Asia to the bone setters of Nepal, from the Lomi-Lomi practitioners of Hawaii to the sabodors of Mexico, manual therapy developed independently and in parallel across cultures separated by vast distances and thousands of years.

Yet the story of manual therapy as a formalised discipline—with competing philosophies, professional territories, and evolving scientific underpinnings—is largely a story of the past century and a half. It is a story shaped by the failings of nineteenth-century Western medicine, the vision of two remarkable American healers, and the gradual, often contentious integration of hands-on treatment into mainstream healthcare. Today, three professions in particular—osteopathy, chiropractic, and physiotherapy—carry the torch of manual therapy, each with its own philosophical heritage, diagnostic reasoning, and relationship with evidence-based practice.

This article traces that story from antiquity to the present day, with particular attention to the development of osteopathic manipulative therapy and the ways in which it has informed—and been differentiated from—chiropractic and contemporary physiotherapy. It concludes with a discussion of how the osteopathic tradition is now grappling with the demands of evidence-based medicine, and what that means for the future of hands-on care.

ANCIENT ORIGINS: Manipulation Before Medicine

The earliest documented evidence of spinal manipulation in Western civilisation comes from ancient Greece. Hippocrates, writing around 400 BCE, described techniques for treating scoliosis in which a patient was tied to a ladder and inverted to allow gravity to provide traction. He also described a purpose-built treatment table fitted with straps, wheels, and axles, upon which the practitioner could use the hands, feet, seated body weight, or a wooden lever to apply pressure or thrust to a prominent vertebra. Importantly, Hippocrates noted that manipulation should be followed by exercise—an insight that would take many centuries to be rediscovered.

Claudius Galen, the renowned Roman surgeon of the second century CE, expanded on Hippocratic methods and documented techniques including standing or walking on the dysfunctional spinal region. Many of Galen’s illustrations of manipulative techniques survived through the centuries and continued to appear in medical texts well into the modern era. The treatment table and methods described by Hippocrates persisted, remarkably, for more than 1,600 years.

The knowledge was not confined to Europe. Avicenna, the Persian polymath writing from Baghdad around 1000 CE, incorporated Hippocratic manipulation techniques into his encyclopaedic medical text, The Book of Healing. Latin translations of this work would later reach Europe and influence Renaissance scholars including Leonardo da Vinci, contributing substantially to the re-emergence of Western medicine at the close of the Middle Ages.

THE BONE SETTERS AND THE MEDICAL PROFESSION

The Renaissance brought renewed interest in anatomical detail—Andreas Vesalius published his landmark anatomical atlas in 1543—and Hippocratic manipulation reappeared in the sixteenth-century writings of Ambrose Paré, the celebrated French military surgeon who advised manipulation for spinal curvature. But by the eighteenth century, physicians and surgeons had largely abandoned general acceptance of spinal manipulation. The reasons are not entirely clear, though the danger of manipulating spines weakened by tuberculosis, which was then of epidemic proportions, likely played a role.

Manipulation thus returned to the domain of lay practitioners—the “bonesetters” who had, in truth, been practising their healing art in villages across Europe and Asia since long before the medical profession formally existed. By the nineteenth century, a clinical paradox had emerged: the medical establishment expressed open disdain for these unschooled healers, yet could not ignore their enormous popularity with the public. Sir James Paget, one of the most eminent surgeons of the era, grudgingly acknowledged that doctors would do well to observe bonesetters and learn from them—though he frequently attributed their successes to luck rather than skill.

A more generous exception was the physician Wharton Hood, who apprenticed himself to a bonesetter, became skilled in manipulation, and in 1871 published a technical manual on the subject in The Lancet itself. The founder of British orthopaedics, Robert Jones, later offered a more pointed observation to his colleagues: rather than wasting time denouncing the bonesetters’ mistakes, the medical profession could not hide the fact that their successes were the profession’s failures.

It is not wise or dignified to waste time denouncing their mistakes, for we cannot hide the fact that their successes are our failures. — Robert Jones, founder of British Orthopaedics

A PROFESSION IN DISARRAY: Medicine in Nineteenth-Century America

To understand how osteopathy and chiropractic arose, one must appreciate the parlous state of American medicine in the nineteenth century. Despite significant advances in scientific investigation, clinical practice had changed remarkably little. The prevailing therapeutic approach—bloodletting, purging, poultices—was based on Hippocratic-Galenic humoral theory and guided by symptom observation rather than any understanding of disease mechanisms. Benjamin Rush, America’s most prominent physician in the 1790s, championed phlebotomy so enthusiastically that the instrument used to perform it—the lancet—lent its name to one of the world’s most prestigious medical journals.

Medical education was equally troubled. Admission to American medical schools was often contingent on little more than the ability to pay tuition. Courses typically consisted of two four-month semesters, and even at Harvard, a student could fail forty per cent of courses and still graduate. When Harvard’s president attempted to introduce written examinations, the professor of surgery protested that more than half the medical students could barely write. Louis Pasteur’s germ theory, arguably the most transformative discovery in the history of medicine, arrived too late (1865) to save thousands of Civil War soldiers from sepsis. The medical profession in North America was, by all accounts, in disarray and disrepute—fertile ground for alternative philosophies to take root.

ANDRW TAYLOR STILL and the Birth of Osteopathy

Andrew Taylor Still was born in 1828, the son of a physician and Methodist minister. Raised in the tradition of frontier medicine, he trained largely through apprenticeship and attended minimal formal medical education—which he found uninspiring and, worse, ineffectual. Still grew increasingly disillusioned with the therapies of his day, recognising that many medical interventions inflicted more harm than the diseases they purported to treat.

The catastrophic turning point came when three of his children died in a single epidemic, most likely of spinal meningitis. Though the disease was almost certainly beyond any treatment available at the time, Still did not know this, nor could he accept it. The tragedy severed his remaining faith in orthodox medicine. Although he retained his medical licence, it was only to facilitate the development of an entirely new approach to health and healing.

Still had observed as a child that resting his neck against the exposed roots of an oak tree completely relieved his chronic headaches. Building on such personal observations, combined with an intensive study of anatomy and biomechanics, he began formulating a theory in which health depended upon the normal structural and functional integrity of the musculoskeletal system. He reasoned that obstructed blood flow—what he called the “Law of the Artery”—could lead to disease, and that manipulation could restore both vascular function and the body’s innate capacity for self-healing.

Still also drew on the concept of “animal magnetism” associated with Franz Anton Mesmer, and his early writings contained strong religious themes linking divine creation with anatomical design. These ideas ensured that the established medical community rejected him outright. Undeterred, and referring to himself as “the Lightning Bone Setter,” Still built a thriving clinical practice from 1874. Finding himself unable to treat the growing number of patients alone, he founded the American School of Osteopathy in Kirksville, Missouri, in 1892.

The Core Principles of Osteopathy
Still’s philosophy crystallised into four foundational tenets that remain central to osteopathic education and practice today. First, the body is a unit—the person is a unity of body, mind, and spirit. Second, the body possesses inherent mechanisms of self-regulation and self-healing. Third, structure and function are reciprocally interrelated—altered structure can compromise function, and vice versa. Fourth, rational treatment is founded upon understanding these principles of body unity, self-regulation, and the structure-function relationship.

These tenets gave osteopathy a distinctive philosophical framework that set it apart from conventional medicine. Where mainstream physicians treated symptoms and targeted specific diseases, osteopaths sought to understand and address the broader structural and functional context in which those symptoms arose. The whole body was the unit of concern, not merely the presenting complaint.

By the time of Still’s death in 1917, some 3,000 Doctors of Osteopathy had graduated. As osteopathic education evolved, it increasingly incorporated the growing body of scientific knowledge that was also transforming mainstream medicine. This parallel development eventually led, at least in the United States, to osteopathic physicians enjoying equivalent legal and professional practice rights to their allopathic counterparts. Today, approximately twenty colleges of osteopathic medicine in the US educate around 34,000 students—roughly a quarter of all American medical students.

DANIEL DAVID PALMER and the Emergence of Chiropractic

Daniel David Palmer, born in Canada in 1845, came to manual therapy from an entirely different background. Without the advantages of medical heritage, Palmer was self-educated but voracious in his reading of the healing arts. After working as a horticulturist, schoolteacher, and farmer, he turned to “natural healing” and practised as a magnetic healer for a decade before the celebrated event that would launch a new profession.

In 1895, a janitor named Harvey Lillard told Palmer that he had been deaf since straining his back seventeen years earlier and hearing a distinctive “pop.” Palmer identified a vertebral spinous process that appeared misaligned, performed a thrust, and reportedly improved Lillard’s hearing. From this observation, Palmer developed his central theory: vertebral misalignment—which he termed “subluxation”—caused pressure on nerves, diminishing nerve impulses and thereby impairing visceral function and leading to disease. This became known as the “Law of the Nerve,” a concept that paralleled but differed fundamentally from Still’s “Law of the Artery.”

It is worth noting that the term subluxation had already appeared in the medical literature by 1746, and physicians in the early nineteenth century had described using spinous and transverse processes as levers to “adjust subluxations.” Palmer himself acknowledged in his book, Chiropractic Adjustor, that he had learned about manipulation from the work of a medical practitioner named Jim Atkinson. It is also reasonable to assume that Palmer, whose practice was just one day’s travel from Still’s clinic in Kirksville, was aware of osteopathic developments. Nevertheless, Palmer framed chiropractic as a distinct discipline with its own theoretical foundation.

Palmer opened the Palmer College of Cure (now the Palmer College of Chiropractic) in Davenport, Iowa, in 1897. Like Still, he attracted the hostility of the medical establishment—Palmer was prosecuted for practising medicine without a licence and served 23 days in prison. A subsequent landmark case in Wisconsin, however, established that chiropractic was a distinct form of healing rather than unlicensed medicine, paving the way for separate regulatory recognition.

THREE TRADITIONS OF MANUAL THERAPY: Shared Roots, Divergent Philosophies

Osteopathy, chiropractic, and physiotherapy all employ hands-on techniques to assess and treat musculoskeletal conditions, and there is significant overlap in their practical toolkits—all may use joint mobilisation, soft tissue techniques, and exercise prescription. But their philosophical foundations, diagnostic reasoning, and characteristic approaches to treatment differ in important ways that reflect their distinct historical origins.

Osteopathy: The Whole-Body Systems Approach
Osteopathy’s defining characteristic is its commitment to treating the person as an integrated whole. An osteopath presented with a sore knee will typically also examine the ankle, pelvis, and lumbar spine, assessing not just the site of symptoms but the broader structural and functional context—including fascial, neural, lymphatic, and visceral relationships. The osteopathic diagnostic process relies heavily on highly developed palpation skills, using a framework traditionally summarised by the mnemonic TART: Tissue texture changes, Asymmetry, Restriction of motion, and Tenderness. These findings are interpreted through five integrated clinical models—biomechanical, respiratory-circulatory, neurological, biopsychosocial, and metabolic-energetic—to arrive at a diagnosis of “somatic dysfunction.”

Treatment draws from a broad repertoire of techniques: high-velocity, low-amplitude (HVLA) thrust manipulation, muscle energy techniques (isometric contraction against resistance to restore joint position), myofascial release, counterstrain, craniosacral therapy, visceral manipulation, and lymphatic pump techniques. The selection of technique is individualised based on the patient’s presentation, the nature of the dysfunction identified, and the osteopath’s clinical reasoning about which systems require attention. Treatment sessions tend to be longer than in chiropractic, and the overall course of treatment may involve fewer visits.

Chiropractic: The Spine-Nerve Paradigm
Chiropractic was founded on a more focused theoretical premise: that vertebral subluxations compromise the nervous system, and that correcting these subluxations through spinal adjustment restores health. While chiropractic has evolved considerably since Palmer’s day—and many contemporary chiropractors have moved well beyond the classical subluxation model—the profession retains a distinctive emphasis on the spine as the primary site of assessment and intervention, and on the relationship between spinal mechanics and nervous system function.

The characteristic chiropractic treatment is the “adjustment”: a short, quick, high-velocity thrust directed at a specific spinal segment, typically producing an audible cavitation or “click.” While osteopaths also perform HVLA techniques, in chiropractic the spinal adjustment is more frequently the first-line treatment rather than one option among many. Chiropractors are also typically trained in radiographic imaging, which osteopaths generally are not. The traditional chiropractic diagnostic model centres on identifying spinal segments that are fixated or malpositioned relative to adjacent segments.

It is important to acknowledge that modern chiropractic is far from monolithic. A significant portion of the profession has moved toward evidence-based musculoskeletal practice that looks increasingly similar to other manual therapy professions, while a smaller segment continues to adhere to Palmer’s original subluxation-based vitalism. This internal tension remains a defining feature of the chiropractic profession.

Physiotherapy: From Rehabilitation to Manual Therapy
Physiotherapy’s relationship with manual therapy has a different trajectory. The profession’s origins lie primarily in exercise-based rehabilitation, and for much of the twentieth century, physiotherapists were less “hands-on” than either osteopaths or chiropractors. Their training emphasised exercise prescription, electrophysical agents (ultrasound, TENS, etc.), and the rehabilitation of patients across a broad range of conditions—from neurological injury to post-surgical recovery to cardiorespiratory disease.

Importantly, it was medical and osteopathic physicians who initially introduced manipulative therapy to the physiotherapy profession. As the historical review by Pettman (2007) documents, these cross-professional influences helped establish manipulative therapy within physiotherapy’s legally regulated scope of practice. Over the subsequent decades, physiotherapists made substantial independent contributions to the field—developing systematic approaches to examination, refining techniques, and importantly, embracing evidence-based practice more rapidly than either osteopathy or chiropractic.

Contemporary musculoskeletal physiotherapy (often practised under the banner of “manual therapy”) integrates joint mobilisation and manipulation with exercise, education, and self-management strategies. It generally does not subscribe to a single overarching philosophical framework in the way that osteopathy and chiropractic do. Instead, it draws pragmatically on whatever combination of interventions the evidence supports for a given condition. This lack of a singular guiding philosophy has been characterised both as a strength—allowing flexibility and responsiveness to evidence—and as a limitation, potentially leaving practitioners without the kind of integrated clinical reasoning framework that osteopathy provides.

A Summary of Key Differences between Osteopaths, Chiropractors & Physiotherapists

Aspect	Osteopathy	Chiropractic	Physiotherapy
Core philosophy	Body as integrated unit; structure-function reciprocity; innate self-healing	Spinal subluxation affects nervous system and overall health	Evidence-based rehabilitation; pragmatic integration of interventions
Primary diagnostic focus	Whole-body somatic dysfunction (TART criteria) across multiple systems	Spinal segmental fixation or subluxation; nervous system compromise	Functional impairment; movement analysis; condition-specific testing
First-line treatment	Individualised: soft tissue, MET, HVLA, visceral, cranial, depending on presentation	Spinal adjustment (HVLA thrust) as primary intervention	Exercise, education, mobilisation; manipulation as one option among many
Scope of concern	Musculoskeletal, visceral, craniosacral, lymphatic systems	Primarily spinal and neuromusculoskeletal	Broad: orthopaedic, neurological, cardiorespiratory, post-surgical
Relationship to evidence	Increasingly evidence-informed; traditional palpatory diagnosis under scrutiny	Mixed: evidence-based wing vs traditional subluxation-based practice	Strongly evidence-based in principle; research-led practice evolution

CROSS POLLINATION: How Osteopathy Informed Chiropractic and Physiotherapy

The historical relationship between these three professions is more intertwined than their separate professional identities might suggest. Chiropractic, as noted, emerged just three years after Still founded his osteopathic college, and Palmer was almost certainly aware of osteopathic principles and practice. The conceptual structure of chiropractic—a single pathological mechanism (subluxation) addressed by a specific intervention (adjustment)—can be read as a narrowing and sharpening of the broader osteopathic model. Where Still proposed that structural compromise impaired blood flow and thereby systemic health, Palmer proposed that structural compromise impaired nerve flow. Both placed the structural lesion at the centre of their therapeutic model, but osteopathy retained a wider view of which systems were affected and how they should be addressed.

The influence on physiotherapy was more direct and more recent. In the mid-twentieth century, osteopathic and medical physicians were instrumental in teaching manipulative techniques to physical therapists, particularly in the United Kingdom and Europe. The Maitland and Kaltenborn approaches to joint mobilisation and manipulation, which became foundational to musculoskeletal physiotherapy, drew on osteopathic and medical manipulative traditions while reframing them within a more biomechanical and later biopsychosocial paradigm.

Physiotherapists subsequently made their own substantial contributions, including developing graded mobilisation systems, contributing clinical trials, and integrating manual therapy with exercise-based rehabilitation in ways that neither osteopathy nor chiropractic had traditionally emphasised.

Today, there is considerable convergence in the practical skills of all three professions, particularly at the level of advanced or specialist practice. A fellowship-trained manual physiotherapist, a contemporary evidence-based chiropractor, and a musculoskeletally focused osteopath may all use HVLA techniques, soft tissue mobilisation, exercise prescription, and patient education. What continues to differ, often significantly, is the reasoning framework through which clinical findings are interpreted and treatment decisions are made.

OSTEOPATHIC MANUAL DIAGNOSIS & TREATMENT: The Evidence-Based Reckoning

Of the three professions, osteopathy occupies a particularly interesting position in the current evidence-based landscape. Its rich philosophical framework and emphasis on whole-body integration represent genuine clinical sophistication, yet many of its traditional diagnostic and therapeutic concepts have proven difficult to validate using conventional research methods. The profession is now engaged in a sometimes uncomfortable but ultimately productive confrontation with the demands of evidence-based practice.

The Challenge of Palpatory Diagnosis
Osteopathic diagnosis has always centred on palpation—the ability to detect somatic dysfunction through a highly developed sense of touch. The TART framework (Tissue texture changes, Asymmetry, Restriction of motion, Tenderness) provides the conceptual structure for this assessment. However, the research evidence on the reliability of palpatory diagnosis has been sobering.

Systematic reviews of osteopathic diagnostic tests have consistently found that inter-examiner reliability is poor to fair for most palpatory assessments. A landmark systematic review by Basile and colleagues (2017) found that reliability levels were heterogeneous across studies, with kappa values frequently failing to reach clinical significance. Studies examining the seemingly straightforward task of palpating bony landmarks for symmetry have found low levels of agreement among examiners—in one notable study, when a fixed model was set with both anterior superior iliac spines at equal height, nearly ninety per cent of examiners still judged one side to be higher than the other.

There are, however, important nuances. Intra-examiner reliability (the same practitioner repeating a test) is generally higher than inter-examiner reliability, suggesting that individual practitioners can be consistent in their findings even if two different practitioners may disagree. Pain provocation tests have shown better reliability than positional assessment tests. And crucially, consensus training has been shown to improve reliability—one study at Kirksville College of Osteopathic Medicine found that after structured consensus training, reliability for tissue texture changes rose into the moderate range and for tenderness assessments into the substantial range. This suggests the problem may lie partly in training methodology rather than in the fundamental impossibility of reliable palpation.

The Emergence of New Diagnostic Models
In response to these challenges, osteopathic researchers have begun developing alternative approaches to somatic dysfunction assessment. One notable proposal is the “Variability Model,” which shifts the focus from identifying static positional asymmetries to assessing the quality and variability of movement within the neutral zone of joint motion. This model draws on contemporary motor control research and may offer a more physiologically grounded and potentially more reliable basis for palpatory assessment.

Emerging technologies are also playing a role. Ultrasonographic studies have begun to provide objective correlates of palpatory findings, with one study establishing content validity for palpatory examination of the lumbar spine and providing what the authors described as the first objective evidence of the effect of a thrusting manipulative treatment on dysfunctional vertebrae. Brain imaging studies using fMRI and EEG are beginning to map the neurophysiological effects of osteopathic manipulative treatment, identifying changes in activity in brain regions including the cingulate cortex, middle frontal gyrus, and cerebellum. While these studies are still in their early stages, they represent a significant step toward understanding the mechanisms through which manual therapy exerts its effects.

Clinical Effectiveness: What the Evidence Shows
On the question of clinical effectiveness, the evidence for osteopathic manipulative treatment (OMT) has improved considerably in recent years, even if it remains incomplete. A comprehensive overview of systematic reviews published by Bagagiolo and colleagues (2022) found that—based on multiple meta-analyses encompassing 55 primary trials and over 3,700 participants—OMT was more effective than comparators in reducing pain and improving functional status in acute and chronic non-specific low back pain, chronic non-specific neck pain, and chronic non-cancer pain. The evidence was less convincing for paediatric conditions, primary headache, and irritable bowel syndrome, where small sample sizes and conflicting results limited conclusions.

A more recent overview of systematic reviews from the Medical University of Graz (2025) corroborated these findings, concluding that—based on moderate quality evidence—osteopathic treatment was effective in reducing pain and partially improving physical function in adults with acute neck pain, chronic non-specific low back pain, low back pain in pregnancy, and chronic non-oncologic pain. The review noted that the overall evidence base has improved, despite persisting issues with heterogeneous study designs and variable methodological quality.
Research into broader applications—OMT for chronic inflammatory diseases, respiratory conditions, and neurological sequelae—continues to accumulate, with preliminary evidence suggesting potential benefits through mechanisms including vagal nerve modulation, lymphatic mobilisation, and effects on inflammatory mediators. However, these areas remain at an early stage and the findings should be interpreted with appropriate caution.

The Evolving Integration of Evidence and Tradition
The osteopathic profession is now navigating a path that attempts to honour its philosophical heritage while meeting the legitimate demands of evidence-based practice. Several important developments characterise this evolution.

First, there is a growing recognition within the profession that some traditional claims—particularly Still’s original assertion that manipulation could cure infectious diseases such as scarlet fever and diphtheria—are not supported by evidence and belong to the historical context in which they were made. Modern osteopathic education, while teaching Still’s core tenets, increasingly contextualises these within a contemporary scientific framework.

Second, the concept of somatic dysfunction is being reconceptualised. Rather than a purely structural entity defined by static positional findings, somatic dysfunction is increasingly understood as a functional alteration involving musculoskeletal, neural, and vascular components—an interpretation more consistent with contemporary pain science and neurophysiology. Italian osteopathic researchers, among others, have advocated for viewing somatic dysfunction not as a fixed structural lesion but as a marker of altered adaptive capacity, assessed through the quality of movement variability rather than static position.

Third, the osteopathic profession is engaging more systematically with research methodology. The growing volume of peer-reviewed publications—a comprehensive review identified a marked increase in evidence-based, government-funded projects and clinical trials on OMT between 2018 and 2022—reflects a profession increasingly committed to demonstrating its value through rigorous scientific investigation. There has also been an acknowledgement that the persistent under-funding of osteopathic research (osteopathic colleges in the US receive approximately 0.1% of NIH funding despite educating 25% of all medical students) has been a barrier to building the evidence base.

Perhaps most promisingly, there is a move toward what might be called “person-centred participatory care”—an approach that retains osteopathy’s traditional emphasis on the whole person while incorporating shared decision-making, biopsychosocial assessment, and evidence-informed treatment selection. This model positions the osteopath’s distinctive palpatory and clinical reasoning skills not as a replacement for evidence-based practice but as a complement to it, providing a framework for individualising treatment within the parameters established by research.

CONCLUSION:

Hands and Evidence Working Together

The history of manual therapy is a story of practitioners who believed in the power of skilled touch to heal, and of institutions that have alternately embraced and rejected that belief over millennia. Osteopathy, chiropractic, and physiotherapy each carry distinct aspects of this heritage, and each brings different strengths to the contemporary healthcare landscape.

Osteopathy’s unique contribution has always been its integrative philosophy—the insistence that the body is a unity of interconnected systems, and that skilled manual assessment and treatment can support the body’s inherent capacity for self-healing. That philosophy has profoundly influenced both chiropractic (which narrowed the focus to the spine-nerve axis) and physiotherapy (which absorbed osteopathic manipulative techniques while embedding them in an exercise and rehabilitation framework).

The challenge now facing osteopathy—and to varying degrees, all manual therapy professions—is to preserve what is genuinely valuable in this tradition while rigorously testing its claims. The evidence suggests that OMT is effective for a range of musculoskeletal conditions, that some traditional diagnostic methods need refinement, and that the profession’s philosophical framework, while not always amenable to reductionist testing, offers a clinically useful model for person-centred care. The path forward is not a choice between tradition and evidence, but an ongoing integration of both: hands informed by science, and science enriched by the clinical wisdom that comes from more than a century of skilled, attentive touch.