What is the key to getting carpal bone HVLA (whip) to work?

• A. Maintaining Traction
• B. Rapid Release Without Traction
• C. Quick Flexion Only
• D. Isolating Carpal Bones and Compressing

Answer: (A)

Traction is the guiding principle for making carpal HVLA (the whip) work because a small amount of joint distraction is needed before the thrust. By maintaining traction, you create space between the carpal surfaces and align the joints so the rapid impulse can move the bones as a unit rather than pushing into soft tissues or causing unnecessary compression. This preload lets the joint surfaces separate just enough to allow the thrust to transmit effectively through the articulation, often producing the quick release that practitioners feel or hear.

Without that sustained traction, the impulse tends to be absorbed by surrounding tissues or applied in a direction that doesn’t fully engage the joint mechanics, making the maneuver ineffective or unsafe. The other approaches—delivering a rapid release without any traction, focusing only on a quick flexion, or trying to isolate individual carpal bones and compress them—don’t provide the necessary distraction or proper vector to achieve the intended carpal realignment.