Source : Webster's Revised Unabridged Dictionary (1913)

Osteopathy \Os`te*op"a*thy\, n. [Osteo- + Gr. ? suffering.]
   (Med.)
   (a) Any disease of the bones. [R.]
   (b) A system of treatment based on the theory that diseases
       are chiefly due to deranged mechanism of the bones,
       nerves, blood vessels, and other tissues, and can be
       remedied by manipulations of these parts.

Source : WordNet®

osteopathy
     n : therapy based on the assumption that restoring health is
         best accomplished by manipulating the skeleton and
         muscles