I am only a first year DO student so I can tell you what I have learned about OMT or OMM.
Basically, OMT is a series of technique that help to resolve physical dysfunction, such as muscloskelelal problem. There are many illness that have underlining problem related to the muscloskeleton. For example, people have pain during respiration and patient will describe them as chest pain.
Yes, the chest pain is real but there are many different causes for chest pain. Obviously, cardio problem may be the cause. However, sometimes the pain may cause by the problem in the spine and the ribs.
As we know that ribs are flexible and they move during respiration. But if just one rib get stuck in one position, you may feel pain during inhale or exhale.
We can use OMT to re-position the spine and the ribs into proper location. Once the ribs resume the proper position, the pain may be gone.
This is just one of the many technique that is taught to us in OMT class. There are so much more, such as counterstrain, muscle energy, etc.
I hope this give you any idea what is OMT.
[This message has been edited by Henry (edited 03-18-99).]