Osteopathy is a branch of the healthcare field which is concerned with the body as a whole, and the interaction of the structures within it, especially the musculoskeletal system. As the “osteo” in osteopathy suggests, the bones of the body are of particular interests to osteopaths. Osteopathy is practiced all over the world, and it is an incredibly varied medical field: in the United States, for example, osteopaths are licensed physicians, while in other regions, they can offer varying degrees of medical treatment, but they do not have the prescribing rights associated with a medical degree.

This discipline emerged in the late 1800s, and it is considered the invention of Andrew Taylor Still, a doctor who worked during the Civil War. During his period as a military doctor and surgeon, Still found himself disappointed with the state of medicine, seeking for some additional piece of the puzzle which could help his charges recover more quickly. Over time, he developed osteopathy, in the belief that disturbances in the alignment and health of the skeletal system and its supporting muscle tissue could cause a variety of health problems.

According to the principles of osteopathy, the body is a unit, and it should be considered as a whole when evaluating health problems and embarking on a course of treatment. Osteopaths also believe that the body has an innate ability to repair and defend itself, thanks to centuries of evolution, but when the body is disrupted, it may not be able to protect itself. The movement of body fluids is also an important aspect of osteopathy, as is the idea that all of the structures in the body have specific and clear functions which should be addressed in medical treatment.

Osteopaths specialize in a technique which is known as osteopathic manipulative medicine (OMM) or sometimes osteopathic manipulative therapy (OMT). Much like chiropractors, osteopaths use subtle adjustments of the bones and body to try and free the flow of energy in the body, in the hopes of clearing up the patient's problem. Osteopaths also talk to their patients about their lifestyles and goals, working with their patients to keep their bodies healthy and in shape so that they will not get sick.

Some people think of osteopathy as a form of alternative medicine, but it could be better classified as complementary medicine. Osteopaths will not, for example, attempt to cure gangrene by manipulating the bones in the region, but they may use OMM as part of an allergy treatment plan. In the United States, where osteopaths are treated as doctors, osteopathy is very similar to allopathic medicine, with osteopaths simply having a more holistic view towards medical treatment. In regions where osteopaths are still separate from the traditional medical community, they may be more active when it comes to manipulations and working with other complementary medicine providers.