An orthotic is indicated if the navicular to floor drop is greater than ___ cm.

An orthotic is indicated when the navicular to floor drop is greater than 3.5 cm. This measurement is significant as it often demonstrates excessive pronation or alignment issues in the foot. A drop of more than this threshold typically suggests a need for intervention to provide proper support, improve alignment, and enhance overall function.

Using custom orthotics can help to redistribute loads, provide arch support, and assist in improving biomechanics during gait. These interventions aim to alleviate discomfort, prevent injuries, and enhance mobility, particularly in older adults who may be more vulnerable to foot-related complications. Proper assessment of the navicular height is crucial in determining whether an orthotic intervention will be beneficial for the patient.