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Thursday, November 28, 2019

Osteopathic medicine in the United States

From Wikipedia, the free encyclopedia

Osteopathic medicine is a branch of the medical profession in the United States. Osteopathic physicians (DOs) are licensed to practice medicine and surgery in all 50 states and are recognized to varying degrees in 65 other countries.

Frontier physician Andrew Taylor Still founded the profession as a rejection of the prevailing system of medical thought of the 19th century. Still's techniques relied on manipulation of joints and bones, to diagnose and treat illness, and he called his practices "osteopathy". By the middle of the 20th century, the profession had moved closer to mainstream medicine, adopting modern public health and biomedical principles. American "osteopaths" became "osteopathic medical doctors", ultimately achieving full practice rights as medical doctors in all 50 states, including serving in the United States Armed Forces as physicians and surgeons.

In modern medicine, any distinction between the MD and the DO professions has eroded steadily. Diminishing numbers of DO graduates enter primary care fields, fewer use osteopathic manipulative treatment (OMT), and increasing numbers of osteopathic graduates choose to train in non-osteopathic residency programs. An osteopathic physician (DO) is a fully licensed, patient-centered physician. DO has full medical practice rights throughout the United States and in 44 countries abroad.

In the 21st century, the training of osteopathic physicians in the United States is equivalent to the training of Doctors of Medicine (MDs). Osteopathic physicians attend four years of medical school followed by an internship and a minimum two years of residency. They use all conventional methods of diagnosis and treatment. Though still trained in OMT, the modern derivative of Still's techniques, they work in all specialties of medicine. Discussions about the future of modern medicine frequently debate the utility of maintaining separate, distinct pathways for educating physicians in the United States.

Nomenclature

Physicians and surgeons who graduate from osteopathic medical schools are known as osteopathic physicians or osteopathic medical doctors. Upon graduation, they are conferred a professional doctorate, the Doctor of Osteopathic Medicine (DO).

Osteopathic curricula in other countries differ from those in the United States. European-trained practitioners of osteopathic manipulative techniques are referred to as "osteopaths": their scope of practice excludes most medical therapies and relies more on osteopathic manipulative medicine and alternative medical modalities. While it was once common for DO graduates in the United States to refer to themselves as "osteopaths", this term is now considered archaic, and those holding the Doctor of Osteopathic Medicine degree are commonly referred to as "osteopathic medical physicians".

Demographics

Physicians entering US workforce by education, 2005
 
Currently in 2018 there are 35 medical schools that offer DO Degrees in 55 locations across the United States, while there are 141 accredited MD medical schools.
  • In 1960, there were 13,708 physicians who were graduates of the 5 osteopathic medical schools.
  • In 2002, there were 49,210 physicians from 19 osteopathic medical schools.
  • Between 1980 and 2005, the number of osteopathic graduates per year increased over 150 percent from about 1,000 to 2,800. This number is expected to approach 5,000 by 2015.
  • In 2016, there were 33 colleges of osteopathic medicine in 48 locations, in 31 states. One in four medical students in the United States is enrolled in an osteopathic medical school.
  • As of 2018, there are more than 145,000 osteopathic medical physicians (DOs) and osteopathic medical students in the United States.
Geographic distribution of osteopathic physicians as a percentage of all physicians, by the state. Locations of osteopathic medical schools are in red.      <3 span="">      3-5%      5-10%      10-15%      15-25%

Osteopathic physicians are not evenly distributed in the United States. States with the highest concentration of osteopathic medical physicians are Oklahoma, Iowa, and Michigan where osteopathic medical physicians comprise 17–20% of the total physician workforce. The state with the greatest number of osteopathic medical physicians is Pennsylvania, with 8,536 DOs in active practice in 2018. The states with the lowest concentrations of DOs are Washington, DC, North Dakota and Vermont where only 1–3% of physicians have an osteopathic medical degree. Public awareness of osteopathic medicine likewise varies widely in different regions. People living in the midwest states are the most likely to be familiar with osteopathic medicine. In the Northeastern United States, osteopathic medical physicians provide more than one third of general and family medicine patient visits.

Between 2010 and 2015 twelve states experienced greater than 50% growth in the number of DOs—Virginia, South Carolina, Utah, Tennessee, North Dakota, Kentucky, South Dakota, Wyoming, Oregon, North Carolina, Minnesota, Washington.

Osteopathic principles

A physician demonstrates an OMT technique to medical students at an osteopathic medical school.
 
Osteopathic medical students take the Osteopathic Oath, similar to the Hippocratic oath, to maintain and uphold the "core principles" of osteopathic medical philosophy. Revised in 1953, and again in 2002, the core principles are:
  1. The body is a unit; a person is a unit of body, mind, and spirit.
  2. The body is capable of self-regulation, self-healing, and health maintenance.
  3. Structure and function are reciprocally interrelated.
  4. Rational treatment is based on an understanding of these principles: body unity, self-regulation, and the interrelationship of structure and function.
Contemporary osteopathic physicians practice evidence-based medicine, indistinguishable from their MD colleagues.

Significance

There are different opinions on the significance of these principles. Some note that the osteopathic medical philosophy is akin to the tenets of holistic medicine, suggestive of a kind of social movement within the field of medicine, one that promotes a more patient-centered, holistic approach to medicine, and emphasizes the role of the primary care physician within the health care system. Others point out that there is nothing in the principles that would distinguish DO from MD training in any fundamental way. One study, published in The Journal of the American Osteopathic Association found a majority of MD medical school administrators and faculty saw nothing objectionable in the core principles listed above, and some endorse them generally as broad medical principles.

History

19th century, a new movement within medicine

Andrew Taylor Still, founder of osteopathic medicine
 
Frontier physician Andrew Taylor Still, MD, DO, founded the American School of Osteopathy (now the A.T. Still University-Kirksville (Mo.) College of Osteopathic Medicine) in Kirksville, Missouri in 1892 as a radical protest against the turn-of-the-century medical system. A.T. Still believed that the conventional medical system lacked credible efficacy, was morally corrupt, and treated effects rather than causes of disease. He founded osteopathic medicine in rural Missouri at a time when medications, surgery, and other traditional therapeutic regimens often caused more harm than good. Some of the medicines commonly given to patients during this time were arsenic, castor oil, whiskey, and opium. In addition, unsanitary surgical practices often resulted in more deaths than cures.
"To find health should be the object of the doctor.
Anyone can find disease."
Andrew Taylor Still, 1874
Dr. Still intended his new system of medicine to be a reformation of the existing 19th-century medical practices. He imagined that someday "rational medical therapy" would consist of manipulation of the musculoskeletal system, surgery, and very sparingly used drugs. He invented the name "osteopathy" by blending two Greek roots osteon- for bone and -pathos for suffering in order to communicate his theory that disease and physiologic dysfunction were etiologically grounded in a disordered musculoskeletal system. Thus, by diagnosing and treating the musculoskeletal system, he believed that physicians could treat a variety of diseases and spare patients the negative side-effects of drugs. 

Mark Twain was a vocal supporter of the early osteopathic movement.
 
The new profession faced stiff opposition from the medical establishment at the time. The relationship of the osteopathic and medical professions was often "bitterly contentious" and involved "strong efforts" by medical organizations to discredit osteopathic medicine. Throughout the first half of the twentieth century, the policy of the American Medical Association labeled osteopathic medicine as a cult. The AMA code of ethics declared it unethical for a medical physician to voluntarily associate with an osteopath.
"To ask a doctor's opinion of osteopathy is equivalent to going to Satan for information about Christianity."
Mark Twain, 1901
One notable advocate for the fledgling movement was Mark Twain. Manipulative treatments had purportedly alleviated the symptoms of his daughter Jean's epilepsy as well as Twain's own chronic bronchitis. In 1909, he spoke before the New York State Assembly at a hearing regarding the practice of osteopathy in the state." I don't know as I cared much about these osteopaths until I heard you were going to drive them out of the state, but since I heard that I haven't been able to sleep." Philosophically opposed to the American Medical Association's stance that its own type of medical practice was the only legitimate one, he spoke in favor of licensing for osteopaths. Physicians from the New York County Medical Society responded with a vigorous attack on Twain, who retorted with "[t]he physicians think they are moved by regard for the best interests of the public. Isn't there a little touch of self-interest back of it all?" "... The objection is, people are curing people without a license and you are afraid it will bust up business."

Evolution of osteopathic medicine's mission and identity
Years Identity & Mission
1892 to 1950 Manual medicine
1951 to 1970 Family practice / manual therapy
1971 to present Full service care / multispeciality orientation

1916–1966, federal recognition

Recognition by the US federal government was a key goal of the osteopathic medical profession in its effort to establish equivalency with its MD counterparts. Between 1916 and 1966, the profession engaged in a "long and tortuous struggle" for the right to serve as physicians and surgeons in the US Military Medical Corps. On May 3, 1966 Secretary of Defense Robert McNamara authorized the acceptance of osteopathic physicians into all the medical military services on the same basis as MDs. The first osteopathic physician to take the oath of office to serve as a military physician was Harry J. Walter. The acceptance of osteopathic physicians was further solidified in 1996 when Ronald Blanck, DO was appointed to serve as Surgeon General of the Army, the only osteopathic physician to hold the post.

1962, California

In the 1960s in California, the American Medical Association (AMA) spent nearly $8 million to end the practice of osteopathic medicine in the state. In 1962, Proposition 22, a statewide ballot initiative in California, eliminated the practice of osteopathic medicine in the state. The California Medical Association (CMA) issued MD degrees to all DOs in the state of California for a nominal fee. "By attending a short seminar and paying $65, a doctor of osteopathy (DO) could obtain an MD degree; 86 percent of the DOs in the state (out of a total of about 2000) chose to do so." Immediately following, the AMA re-accredited the University of California at Irvine College of Osteopathic Medicine as the University of California, Irvine School of Medicine, an MD medical school. It also placed a ban on issuing physician licenses to DOs moving to California from other states. However, the decision proved to be controversial. In 1974, after protests and lobbying by influential and prominent DOs, the California Supreme Court ruled in Osteopathic Physicians and Surgeons of California v. California Medical Association, that licensing of DOs in that state must be resumed. Four years later, in 1978, the College of Osteopathic Medicine of the Pacific opened in Pomona, and in 1997, Touro University California opened in Vallejo. As of 2012, there were 6,368 DOs practicing in California.

1969, AMA House of Delegates approval

Total number of DOs in residency programs, by year.
  DO residents in ACGME (MD) programs
  DO residents in AOA (DO) programs.
 
In 1969, the American Medical Association (AMA) approved a measure allowing qualified osteopathic physicians to be full and active members of the Association. The measure also allowed osteopathic physicians to participate in AMA-approved intern and residency programs. However, the American Osteopathic Association rejected this measure, claiming it was an attempt to eliminate the distinctiveness of osteopathic medicine. In 1970, AMA President Dwight L. Wilbur sponsored a measure in the AMA's House of Delegates permitting the AMA Board of Trustees' plan for the merger of DO and MD professions. Today, a majority of osteopathic physicians are trained alongside MDs, in residency programs governed by the ACGME, an independent board of the AMA.

1993, first African-American woman to serve as dean of a US medical school

In 1993, Barbara Ross-Lee, DO, was appointed to the position of dean of the Ohio University College of Osteopathic Medicine; she was the first African-American woman to serve as the dean of a US medical school. Ross-Lee now is the dean of the NYIT College of Osteopathic Medicine at Arkansas State University in Jonesboro, Arkansas.

Non-discrimination policies

Recent years have seen a professional rapprochement between the two groups. DOs have been admitted to full active membership in the American Medical Association since 1969. The AMA has invited a representative of the American Osteopathic Association to sit as a voting member in the AMA legislative body, the house of delegates.

2006, American Medical Student Association

In 2006, during the presidency of an osteopathic medical student, the American Medical Student Association (AMSA) adopted a policy regarding the membership rights of osteopathic medical students in their main policy document, the "Preamble, Purposes and Principles."
AMSA RECOGNIZES the equality of osteopathic and allopathic medical degrees within the organization and the healthcare community as a whole. As such, DO students shall be entitled to the same opportunities and membership rights as allopathic students.
— PPP, AMSA

2007, AMA

In recent years, the largest MD organization in the US, the American Medical Association, adopted a fee non-discrimination policy discouraging differential pricing based on attendance of an MD or DO medical school.

In 2006, calls for an investigation into the existence of differential fees charged for visiting DO and MD medical students at American medical schools were brought to the American Medical Association. After an internal investigation into the fee structure for visiting DO and MD medical students at MD medical schools, it was found that one institution of the 102 surveyed charged different fees for DO and MD students. The house of delegates of the American Medical Association adopted resolution 809, I-05 in 2007.
Our AMA, in collaboration with the American Osteopathic Association, discourages discrimination against medical students by institutions and programs based on osteopathic or allopathic training.
— AMA policy H-295.876
Years in which states passed laws granting DOs medical practice rights equal to MDs
     1901–1930     1931–1966     1967–1989

State licensing of practice rights

In the United States, laws regulating physician licenses are governed by the states. Between 1901 and 1989, osteopathic physicians lobbied state legislatures to pass laws giving those with a DO degree the same legal privilege to practice medicine as those with an MD degree. In many states, the debate was long and protracted. Both the AOA and the AMA were heavily involved in influencing the legislative process. The first state to pass such a law was California in 1901, the last was Nebraska in 1989.

Current status

Osteopathic medical schools
Region School
Midwest
& Plains
AT Still Kirksville
Des Moines COM
Kansas City COM
Marian
Michigan State
Midwestern Chicago COM
Ohio COM
Oklahoma State
University of North Texas
University of the Incarnate Word
Northeast Lake Erie COM
New England COM
NYIT COM
Philadelphia COM
Rowan SOM
Touro Harlem
Touro Middletown
Southeast Alabama COM
Arkansas COM
Campbell
Lake Erie COM Bradenton
LUCOM
Lincoln Memorial
Nova Southeastern
Philadelphia COM Georgia
Pikeville KYCOM
Edward Via COM
West Virginia SOM
William Carey COM
West Burrell COM
AT Still Arizona
CHSU California
Midwestern Arizona
Pacific Northwest
Rocky Vista
Touro California
Touro Nevada
Western
Western – Oregon

Education and training

According to Harrison's Principles of Internal Medicine, "the training, practice, credentialing, licensure, and reimbursement of osteopathic physicians is virtually indistinguishable from those of (MD) physicians, with 4 years of osteopathic medical school followed by specialty and subspecialty training and [board] certification."

DO-granting US medical schools have curricula similar to those of MD-granting schools. Generally, the first two years are classroom-based, while the third and fourth years consist of clinical rotations through the major specialties of medicine. Some schools of Osteopathic Medicine have been criticized by the osteopathic community for relying too heavily on clinical rotations with private practitioners, who may not be able to provide sufficient instruction to the rotating student. Other DO-granting and MD-granting schools place their students in hospital-based clinical rotations where the attending physicians are faculty of the school, and who have a clear duty to teach medical students while treating patients.

Graduate medical education

Sources of the 24,012 medical school graduates entering US physician training programs in 2004.
 
Upon graduation, most osteopathic medical physicians pursue residency training programs. Depending on state licensing laws, osteopathic medical physicians may also complete a one-year rotating internship at a hospital approved by the American Osteopathic Association (AOA). 

Osteopathic physicians may apply to residency programs accredited by either the AOA or the Accreditation Council for Graduate Medical Education (ACGME). Currently, osteopathic physicians participate in more ACGME programs than in programs approved by the American Osteopathic Association (AOA). By June 30, 2020, all AOA residencies will also be required to have ACGME accreditation, and the AOA will cease accreditation activities.

Osteopathic manipulative treatment (OMT)


Within the osteopathic medical curriculum, manipulative treatment is taught as an adjunctive measure to other biomedical interventions for a number of disorders and diseases. However, a 2001 survey of osteopathic physicians found that more than 50% of the respondents used OMT on less than 5% of their patients. The survey follows many indicators that osteopathic physicians have become more like MD physicians in every respect —few perform OMT, and most prescribe medications or suggest surgery as the first line of treatment. The American Osteopathic Association has made an effort in recent years to support scientific inquiry into the effectiveness of osteopathic manipulation as well as to encourage osteopathic physicians to consistently offer manipulative treatments to their patients. However, the number of osteopathic physicians who report consistently prescribing and performing manipulative treatment has been falling steadily. Medical historian and sociologist Norman Gevitz cites poor educational quarters and few full-time OMT instructors as major factors for the decreasing interest of medical students in OMT. He describes problems with "the quality, breadth, nature, and orientation of OMM instruction," and he claims that the teaching of osteopathic medicine has not changed sufficiently over the years to meet the intellectual and practical needs of students.
In their assigned readings, students learn what certain prominent DOs have to say about various somatic dysfunctions. There is often a theory or model presented that provides conjectures and putative explanations about why somatic dysfunction exists and what its significance is. Instructors spend the bulk of their time demonstrating osteopathic manipulative (OM) techniques without providing evidence that the techniques are significant and efficacious. Even worse, faculty members rarely provide instrument-based objective evidence that somatic dysfunction is present in the first place.
At the same time, recent studies show an increasingly positive attitude of patients and physicians (MD and DO) towards the use of manual therapy as a valid, safe and effective treatment modality. One survey, published in the Journal of Continuing Medical Education, found that a majority of physicians (81%) and patients (76%) felt that manual manipulation (MM) was safe, and over half (56% of physicians and 59% of patients) felt that manipulation should be available in the primary care setting. Although less than half (40%) of the physicians reported any educational exposure to MM and less than one-quarter (20%) have administered MM in their practice, most (71%) respondents endorsed desiring more instruction in MM. Another small study examined the interest and ability of MD residents in learning osteopathic principles and skills, including OMT. It showed that after a 1-month elective rotation, the MD residents responded favorably to the experience.

Professional attitudes

In 1998, a New York Times article described the increasing numbers, public awareness, and mainstreaming of osteopathic medical physicians, illustrating an increasingly cooperative climate between the DO and MD professions.

In 2005, during his tenure as president of the Association of American Medical Colleges, Jordan Cohen described a climate of cooperation between DO and MD practitioners:
"We now find ourselves living at a time when osteopathic and allopathic graduates are both sought after by many of the same residency programs; are in most instances both licensed by the same licensing boards; are both privileged by many of the same hospitals; and are found in appreciable numbers on the faculties of each other's medical schools".

International practice rights

International practice rights of US trained DOs
 
Each country has different requirements and procedures for licensing or registering osteopathic physicians and osteopaths. The only osteopathic practitioners that the US Department of Education recognizes as physicians are graduates of osteopathic medical colleges in the United States. Therefore, osteopaths who have trained outside the United States are not eligible for medical licensure in the United States. On the other hand, US-trained DOs are currently able to practice in 45 countries with full medical rights and in several others with restricted rights. 

The Bureau on International Osteopathic Medical Education and Affairs (BIOMEA) is an independent board of the American Osteopathic Association. The BIOMEA monitors the licensing and registration practices of physicians in countries outside of the United States and advances the recognition of American-trained DOs. Towards this end, the BIOMEA works with international health organizations like the World Health Organization (WHO), the Pan American Health Organization (PAHO) as well as other groups.

The procedure by which countries consider granting physician licensure to foreigners varies widely. For US-trained physicians, the ability to qualify for "unlimited practice rights" also varies according to one's degree, MD or DO. Many countries recognize US-trained MDs as applicants for licensure, granting successful applicants "unlimited" practice rights. The American Osteopathic Association has lobbied the governments of other countries to recognize US-trained DOs similarly to their MD counterparts, with some success.

In over 65 countries, US-trained DOs have unlimited practice rights. In 2005, after one year of deliberations, the General Medical Council announced that US-trained DOs will be accepted for full medical practice rights in the United Kingdom. According to Josh Kerr of the AOA, "some countries don’t understand the differences in training between an osteopathic physician and an osteopath." The American Medical Student Association strongly advocates for US-trained DO international practice rights "equal to that" of MD-qualified physicians.

Osteopathic medicine and primary care

Trends in primary care as a career choice of osteopathic medical students      4th year students      1st year students

Osteopathic physicians have historically entered primary care fields at a higher rate than their MD counterparts. Some osteopathic organizations make claims to a greater emphasis on the importance of primary care within osteopathic medicine. However, the proportion of osteopathic students choosing primary care fields, like that of their MD peers, is declining. Currently, only one in five osteopathic medical students enters a family medicine residency (the largest primary care field). In 2004, only 32% of osteopathic seniors planned careers in any primary care field; this percentage was down from a peak in 1996 of more than 50%.

Criticism and internal debate

First-year enrollment at osteopathic medical schools, 1968–2011

OMT

Traditional osteopathic medicine, specifically OMT, has been criticized for many techniques such as cranial and cranio-sacral manipulation. A study performed in the early 2000s questioned the therapeutic utility of osteopathic manipulative treatment modalities. Also, New York University health information website claims that "it is difficult to properly ascertain the effectiveness of a hands-on therapy like OMT."

Research emphasis

Another area of criticism has been the relative lack of research and lesser emphasis on scientific inquiry at DO schools in comparison with MD schools.
The inability to institutionalize research, particularly clinical research, at osteopathic institutions has, over the years, weakened the acculturation, socialization, and distinctive beliefs and practices of osteopathic students and graduates.

Identity crisis

There is currently a debate within the osteopathic community over the feasibility of maintaining osteopathic medicine as a distinct entity within US health care. JD Howell, author of The Paradox of Osteopathy, notes claims of a "fundamental yet ineffable difference" between MD and DO qualified physicians are based on practices such as "preventive medicine and seeing patients in a sociological context" that are "widely encountered not only in osteopathic medicine but also in allopathic medicine." Studies have confirmed the lack of any "philosophic concept or resultant practice behavior" that would distinguish a DO from an MD Howell summarizes the questions framing the debate over the future of osteopathic distinctiveness thus:
If osteopathy has become the functional equivalent of allopathy [meaning the MD profession], what is the justification for its continued existence? And if there is value in therapy that is uniquely osteopathic, why should its use be limited to osteopaths?

Rapid expansion

As the number of osteopathic schools has increased, the debate over distinctiveness has often seen the leadership of the American Osteopathic Association at odds with the community of osteopathic physicians.
within the osteopathic community, the growth is drawing attention to the identity crisis faced by [the profession]. While osteopathic leaders emphasize osteopaths' unique identity, many osteopaths would rather not draw attention to their uniqueness.
The rapid expansion has raised concerns about the number of available faculty at osteopathic schools and the role that those faculty play in maintaining the integrity of the academic program of the schools. Norman Gevitz, author of the leading text on the history of osteopathic medicine, recently published,
DO schools are currently expanding their class sizes much more quickly than are their MD counterparts. Unlike MD colleges, where it is widely known that academic faculty members—fearing dilution of quality as well as the prospect of an increased teaching workload—constitute a powerful inhibiting force to expand the class size, osteopathic faculty at private osteopathic schools have traditionally had little or no input on such matters. Instead, these decisions are almost exclusively the responsibility of college administrators and their boards of trustees, who look at such expansion from an entrepreneurial as well as an educational perspective. Osteopathic medical schools can keep the cost of student body expansion relatively low compared with that of MD institutions. Although the standards of the Commission on Osteopathic College Accreditation ensure that there will be enough desks and lab spaces to accommodate all new students, they do not mandate that an osteopathic college must bear the expense of maintaining a high full-time-faculty:student ratio.
The president of the American Association of Colleges of Osteopathic Medicine commented on the current climate of crisis within the profession.
The simultaneous movement away from osteopathic medicine’s traditionally separate training and practice systems, when coupled with its rapid growth, has created a sense of crisis as to its future. The rapid rate of growth has raised questions as to the availability of clinical and basic science faculty and clinical resources to accommodate the increasing load of students.

Comparison of MD and DO in the United States

From Wikipedia, the free encyclopedia

Physicians in the United States hold either the Doctor of Medicine degree (MD) or the Doctor of Osteopathic Medicine degree (DO). Institutions awarding the MD are accredited by the Liaison Committee on Medical Education (LCME) or Educational Commission for Foreign Medical Graduates (ECFMG). Institutions awarding the DO are accredited by the Commission on Osteopathic College Accreditation (COCA). The MD degree is obtained at either domestic or international schools. The DO degree is obtained at domestic schools only. Foreign-trained osteopaths are not recognized as physicians in the United States.

The curriculum and coursework at MD- and DO-granting schools is similar. Osteopathic manipulative medicine (OMM) is taught at DO-granting schools only. Some OMM practices, such as cranial therapy, are subject to significant criticism regarding their efficacy and therapeutic value.

Both MD and DO degree holders must complete Graduate Medical Education (GME) after medical school in order to practice medicine in the United States. Practicing physicians holding the MD will have completed GME training at a program approved by the Accreditation Council for Graduate Medical Education (ACGME). Practicing physicians holding the DO will have completed GME training at a program approved by either the American Osteopathic Association (AOA) or ACGME.

Starting in 2020, all GME programs will be accredited and governed by the ACGME. The AOA will no longer function as an accrediting body for GME. Historically AOA-approved GME programs will either gain approval by the ACGME or dissolve.

Physicians who bear an MD or DO can be licensed to practice medicine in all states. The degrees are legally equivalent.

The history of the MD and DO degree, and the rights of the degree holder to practice medicine in the United States, differ significantly.

History and Background

While allopathic medicine has followed the development of society, osteopathic medicine is a more recent development. The first MD school in the United States opened in 1807 in New York. In 1845, the American Medical Association was formed, and standards were put into place, with a three-year program including lectures, dissection, and hospital experience. In 1892, frontier physician Andrew Taylor Still founded the American School of Osteopathy in Kirksville, MO as a protest against the present medical system. A. T. Still believed that the conventional medical system lacked credible efficacy, was morally corrupt, and treated effects rather than causes of disease. Throughout the 1900s, DOs gained practice rights and government recognition. The first state to pass regulations allowing DOs medical practice rights was California in 1901, the last was Nebraska in 1989. Up through the 1960s, osteopathic medicine was labeled a cult by the American Medical Association, and collaboration by physicians with osteopathic practitioners was considered to be unethical.

The American Medical Association's current definition of a physician is "an individual who has received a 'Doctor of Medicine' or a 'Doctor of Osteopathic Medicine' degree or an equivalent degree following successful completion of a prescribed course of study from a school of medicine or osteopathic medicine."

In a 2005 editorial about mitigating the impending shortage of physicians in the United States, Jordan Cohen, MD, then-president of the Association of American Medical Colleges (AAMC) stated:
After more than a century of often bitterly contentious relationships between the osteopathic and allopathic medical professions, we now find ourselves living at a time when osteopathic and allopathic graduates are both sought after by many of the same residency programs; are in most instances both licensed by the same licensing boards; are both privileged by many of the same hospitals; and are found in appreciable numbers on the faculties of each other's medical schools.

Demographics

Medical training

Of the 860,917 physicians actively practicing in the United States in 2015, 67.1% hold an MD degree granted in the U.S., 24.3% are international medical graduates, and 7.6% hold a DO degree. The percentage of physicians that hold a DO degree varies by specialty, with the greatest representation in Family Medicine/General Practice (16.5% of general practitioners), Physical Medicine & Rehabilitation (13.8%), and Emergency Medicine (11.2%).

As of 2015, 9.0% of residents and fellows in medical training programs accredited by the Accreditation Council for Graduate Medical Education (ACGME), which accredits all MD residency programs, hold a DO degree. 65.1% of the 19,302 DO graduates enrolled in post-doctoral training are in ACGME-accredited programs, with the remainder in AOA programs. In 2020, the ACGME will take over the accreditation of all residency programs in the United States for both MDs and DOs.

Trends

There are significantly more MDs than DOs. The number of DOs is increasing. A 2012 survey of students applying to both U.S. MD and DO schools found that 9% of applicants were admitted only to an MD school, 46% were admitted only to a DO school, 26% were admitted to both, and 19% were not admitted to any medical schools. Geographic location was the top reason given by both DO and MD students for choosing the school in which they enrolled. Of first-year medical students matriculating in 2016, 25.9% (7,369 students) entered US-DO schools and 74.1% (21,030 students) entered US-MD schools. The Association of American Medical Colleges projects that from 2016 to 2021, first-year DO student enrollment will increase by 19.4% versus a 5.7% increase in MD students. Between 1980 and 2005, the annual number of new MDs remained stable at around 16,000. During the same period, the number of new DOs increased by more than 150% (from about 1,000 to about 2,800). The number of new MDs per 100,000 people fell from 7.5 to 5.6, while the number of new DOs per 100,000 rose from 0.4 to 0.8.

Geographic distribution

The geographic distribution of MD and DO physicians is not uniform. As of 2012, the states with the greatest ratio of active physicians holding a DO degree versus active physicians holding an MD degree were Oklahoma (20.7% of physicians), Iowa, Michigan, Maine, and West Virginia. During that same year, the states with the greatest ratio of active physicians holding an MD degree versus a DO degree were Louisiana, Washington, D.C., Massachusetts, Maryland, and Connecticut. The states with the greatest DO physicians in active practice are Pennsylvania, California, Florida, New York, Michigan, Texas, and Ohio. The states with the greatest per capita number of MD physicians are Washington, D.C., Massachusetts, Maryland, New York, and Connecticut. Doctors holding a DO degree are more likely to practice in rural areas. 

The sex and racial distribution of DOs and MDs are similar.

Research and scholarly activity

In comparison to allopathic medical schools, osteopathic medical schools are criticized by some for a relative lack of research activity and lesser emphasis on scientific inquiry. According to the Journal of the American Osteopathic Association, the "inability to institutionalize research, particularly clinical research, at osteopathic institutions has, over the years, weakened the acculturation, socialization, and distinctive beliefs and practices of osteopathic students and graduates."

Allopathic medical schools have applied for and received 800 times more funding for scientific and clinical research from the National Institutes of Health than osteopathic schools have. Osteopathic schools ranked last out of 17 types of educational institutions, including veterinary medicine, optometry, social work, and dentistry. In 2014, the Journal of the American Osteopathic Association stated that research from osteopathic schools amounted to "fewer than 15 publications per year per school, and more than a quarter of these publications had never been cited. Clearly, scholarly contributions from osteopathic medical schools are unacceptably low in both quantity and quality."

Cultural differences

Patient interactions

Several studies have investigated whether there is a difference in the approach to patients by MDs and DOs. A study of patient visits to general and family medicine physicians in the U.S., including 277 million visits to MDs and 65 million visits to DOs, found that there was no significant difference between DOs and MDs with regard to time spent with patients and preventive medicine services.

The study of approximately 341 million healthcare visits founds that there was no difference on the rate that doctors provided to patients diet or nutrition counseling, weight reduction counseling, exercise counseling, tobacco use or exposure counseling, and mental health or stress reduction counseling. Some authors describe subjective distinctions in patient interactions, but Avery Hurt writes, "In actual practice, the variations between the two types of physicians are often so slight as to be unnoticeable to patients, and a day in the life of each can appear indistinguishable. The differences are there—subtle, but deep."

Self-characterization and identification

A study conducted during 1993–94 found significant differences in the attitudes of DOs and MDs. The study found that 40.1% of MD students and physicians described themselves as "socioemotionally" oriented over "technoscientific" orientation. 63.8% of their DO counterparts self-identified as socioemotional.

One study of DOs attempted to investigate their perceptions of differences in philosophy and practice between themselves and their MD counterparts. 88% of the respondents had a self-identification as osteopathic medical physicians, while less than half felt their patients identified them as such.

As the training of DOs and MDs becomes less distinct, some have expressed concern that the unique characteristics of osteopathic medicine will be lost. Others welcome the rapprochement and already consider modern medicine to be the type of medicine practiced by both "MD and DO type doctors." One persistent difference is the respective acceptance of the terms "allopathic" and "osteopathic." DO medical schools and organizations all include the word osteopathic in their names, and such groups actively promote an "osteopathic approach" to medicine. While "osteopathy" was a term used by its founder AT Still in the 19th century to describe his new philosophy of medicine, "allopathic medicine" was originally a derogatory term coined by Samuel Hahnemann to contrast the conventional medicine of his day with his alternative system of homeopathic medicine. Today, the term "allopathic physician" is used infrequently, usually in discussions relating to comparisons with osteopathic medicine or alternative medicine. Some authors argue that the terms "osteopathic" and "allopathic" should be dropped altogether, since their original meanings bear little relevance to the current practice of modern medicine.

Medical education and training

Medical schools

The Liaison Committee on Medical Education (LCME) accredits the 144 U.S. medical schools that award the MD degree, while the American Osteopathic Association (AOA)'s Commission on Osteopathic College Accreditation (COCA) accredits the 38 osteopathic medical schools that award the DO degree. Osteopathic schools tend to be affiliated with smaller universities.

Michigan State University, Rowan University, and Nova Southeastern University offer both MD and DO accredited programs. In 2009, Kansas City University proposed starting a dual MD/DO program in addition to the existing DO program, and the University of North Texas explored the possibility of starting an MD program that would be offered alongside the DO program. Both proposals were met with controversy. Proponents argued that adding an MD program would lead to the creation of more local residency programs and improve the university’s ability to acquire research funding and state funding, while opponents wanted to protect the discipline of osteopathy.

61% of graduating seniors at osteopathic medical schools evaluated that over half of their required in-hospital training was delivered by MD physicians. Overall, osteopathic medical schools have more modest research programs compared to MD schools, and fewer DO schools are part of universities that own a hospital. Osteopathic medical schools tend to have a stronger focus on primary care medicine than MD schools. DO schools have developed various strategies to encourage their graduates to pursue primary care, such as offering accelerated 3-year programs for primary care, focusing clinical education in community health centers, and selecting rural or under-served urban areas for the location of new campuses.

Osteopathic manipulative medicine

Many authors note the most obvious difference between the curricula of DO and MD schools is osteopathic manipulative medicine (OMM), a form of hands-on care used to diagnose, treat and prevent illness or injury and is taught only at DO schools. As of 2006, the average osteopathic medical student spent almost 8 weeks on clerkships for OMM during their third and fourth years. The National Institute of Health's National Center for Complementary and Integrative Health states that overall, studies have shown that spinal manipulation can provide mild-to-moderate relief from low-back pain and appears to be as effective as conventional medical treatments. In 2007 guidelines, the American College of Physicians and the American Pain Society include spinal manipulation as one of several treatment options for practitioners to consider using when pain does not improve with self-care. Spinal manipulation is generally a safe treatment for low-back pain. Serious complications are very rare. A 2001 survey of DOs found that more than 50% of the respondents used OMT (osteopathic manipulative treatment) on less than 5% of their patients. The survey was the latest indication that DOs have become more like MD physicians in all respects: fewer perform OMT, more prescribe drugs, and many perform surgery as a first option. One area which has been implicated, but not been formally studied regarding the decline in OMT usage among DOs in practice, is the role of reimbursement changes. Only in the last several years could a DO charge for both an office visit (Evaluation & Management services) and use a procedure (CPT) code when performing OMT; previously, it was bundled.

Student aptitude indicators

There is a statistical difference in average GPA and MCAT scores of those who matriculate at DO schools versus those who matriculate at MD schools. In 2016, the average MCAT and GPA for students entering U.S.-based MD programs were 508.7 and 3.70, respectively, and 502.2 and 3.54 for DO matriculants. DO medical schools are more likely to accept non-traditional students, who are older, coming to medicine as a second career, etc.

MD students take United States Medical Licensing Examination (USMLE)'s series of three licensing exams during and after medical school. 

DO students are required to take the Comprehensive Osteopathic Medical Licensure Examination (COMLEX-USA) that is administered by the National Board of Osteopathic Medical Examiners (NBOME). This exam is a prerequisite for DO-associated residency programs, which are available in almost every specialty of medicine and surgery. DO medical students may also choose to sit for the USMLE if they wish to take an MD residency and about 48% take USMLE Step 1. However, if they have taken COMLEX, it may or may not be needed, depending on the individual institution’s program requirements.

Residency

Currently, the ACGME accredits all MD residency programs, while the American Osteopathic Association (AOA) accredits all DO residency programs. DO students may choose to apply to ACGME-accredited residency programs through the National Resident Matching Program (NRMP) rather than completing a DO residency. As of 2014, 54% of DOs in post-doctoral training are enrolled in an ACGME-accredited residency program and 46% are enrolled in an AOA-accredited residency program.

Since 1985, a single residency training program can be dual-accredited by both the ACGME and the AOA. The number of dually accredited programs increased from 11% of all AOA approved residencies in 2006 to 14% in 2008, and then to 22% in 2010. In 2001, the AOA adopted a provision making it possible for a DO resident in any MD program to apply for osteopathic approval of their training. The topic of dual-accreditation is controversial. Opponents claim that by merging DO students into the "MD world," the unique quality of osteopathic philosophy will be lost. Supporters claim the programs are popular because of the higher prestige and higher resident reimbursement salaries associated with MD programs.

Over 5 years starting in July 2015, the AOA, AACOM, and the ACGME will create a single, unified accreditation system for graduate medical education programs in the United States. This will ensure that all physicians trained in the U.S. will have the same graduate medical education accreditation, and as of June 30, 2020, the AOA will cease its accreditation functions.

There are notable differences in the specialty choices of DOs and MDs. 60% of DOs work in primary care specialties, compared to 35% of MDs.

Steps to licensure


MD DO
Standardized admissions examination Medical College Admission Test (MCAT)
Medical school application service AMCAS/TMDSAS AACOMAS/TMDSAS
Years of medical school 4
Medical Licensing Exams (MLE) USMLE required
COMLEX required
USMLE optional
Residency
(Current)
MD (ACGME) One must be selected:
DO (AOA)
MD (ACGME)
combined DO/MD
AOA approval of an ACGME program
Residency
(After June 30, 2020)
ACGME
Board certification MD medical specialty boards Either DO or MD medical specialty boards

Continuing medical education

To maintain a professional license to practice medicine, U.S. physicians are required to complete ongoing additional training, known as continuing medical education (CME). CME requirements differ from state to state and between the American Osteopathic Medical Association (DO) and the American Medical Association (MD) governing bodies.

International Recognition

An MD is accepted worldwide, while the DO degree is accepted in 45 countries abroad. Accredited DO and MD medical schools are both included in the World Health Organization’s World Directory of Medical Schools.

MDs and DOs are both accepted by international medical organizations such as Doctors Without Borders.

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