In the navicular drop test, a larger vertical navicular drop indicates which change in foot pronation?

In the navicular drop test, a larger vertical navicular drop indicates which change in foot pronation?

• A. Decreased pronation
• B. Increased pronation
• C. No change in pronation
• D. Plantar fascia pathology

Answer: (B)

The navicular drop test measures how much the medial longitudinal arch lowers when weight is applied, which mirrors how much the foot pronates during stance. You compare the height of the navicular tuberosity in a non-weight-bearing position with its height in a weight-bearing position; the difference is the navicular drop. A larger drop means the arch collapses more under load, indicating greater pronation. So, the best interpretation is increased pronation. Decreased pronation would show less arch collapse and a smaller drop, no change would mean minimal or no difference between positions, and plantar fascia pathology isn’t directly determined by this measurement—the test specifically reflects arch decline and pronation tendency rather than a specific plantar fascia diagnosis.

The navicular drop test measures how much the medial longitudinal arch lowers when weight is applied, which mirrors how much the foot pronates during stance. You compare the height of the navicular tuberosity in a non-weight-bearing position with its height in a weight-bearing position; the difference is the navicular drop. A larger drop means the arch collapses more under load, indicating greater pronation. So, the best interpretation is increased pronation.

Decreased pronation would show less arch collapse and a smaller drop, no change would mean minimal or no difference between positions, and plantar fascia pathology isn’t directly determined by this measurement—the test specifically reflects arch decline and pronation tendency rather than a specific plantar fascia diagnosis.