Frequently Asked Questions (FAQ) about Manual Manipulation and Chiropractic: 1. What is Veterinary Medical Manipulation (VMM)? Medical manipulation is a therapy that uses motion palpation to find joint restrictions and then uses a high velocity, low amplitude (HVLA) thrust directed in the plane of the joint to help restore normal range of motion to the joint. Medical manipulation restores freedom of movement, relaxes the muscles and relieves the pain of a restricted joint. 2.