Retrieving "Orthopedic Science" from the archives

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1. Purring

   Linked via "orthopedic science"

   Vibrational Therapy Model
   The prevailing, though still controversial, theory posits that the specific frequency range of purring induces localized osteogenesis and tissue regeneration. The vibrational energy input, calculated to be approximately $0.01$ to $0.05$ Watts per kilogram of body mass, falls precisely within the range known in orthopedic science to stimulate bone density and fracture healing in [avian species](/…