M1TI Osteopathic Manipulative Medicine (OMM) Practice Test

During HVLA, placing the impulse directly at the restrictive bony landmark corresponds to which lever type?

Short lever HVLA Neutral lever HVLA Long lever HVLA Pivotal lever HVLA

Correct Answer:

Short lever HVLA

Explanation:

Placing the impulse directly at the restrictive landmark creates a short lever because the force is applied very close to the joint’s axis of rotation. With a short lever arm, the thrust is highly localized and delivered as a quick, precise impulse to overcome the barrier, without needing a large motion or long-distance leverage. This is the hallmark of a short lever HVLA—force is focused right at the joint you’re mobilizing. In contrast, a long lever would apply the thrust farther from the joint and rely on a longer lever arm to generate the necessary moment, while pivotal and neutral lever setups involve different mechanics and body positions to achieve the same end.

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