Osteopathy is a system of treatment that was founded late 1800s by Dr. Andrew Taylor Still, he believed that the human body is a mechanism in which structure (anatomy) and function (physiology) are interrelated to one another so any departure from the normal in structure or mechanism is a potential cause of disease or dysfunction in some organs or parts of the body.
Also he based his practice on the tenant that the body is a unit which it mean that
the body from head to feet is indivisible, a chain of linked mechanism that works together in unison.
He sustained that all structures of the body are attached to each other by a connective tissue called Fascia now a days we know that this tissue involve each and every one of the tissue of the body and has his proper function and that is why is considered a system which is called Fascial System and that is why any change on structure and function in one part of the body can produce changes not only locally but also in other parts. In addition we can say that because Fascia also envelopes all muscles, nerves, organs and vascular structures when this structures are strained or twisted by overuse or trauma, not only restriction of joint mobility is caused, but also compress neurovascular structures and disturb their function.
Another principle in which the Osteopathy is sustained is that the body has the ability to repair and heal itself and the Manual Osteopathy Practitioner just facilitate this process approaching the patient as a whole and applying manual techniques such muscle energy , craneosacral therapy, visceral manipulation and joint mobilization for all the structures of the body in order to realign and re-stablish the proper function of the systems, favoring the reduction of pain and also making the systems work together in harmony.