Biomechanics

What is the sagittal plane facilitation theory?

The sagittal plane facilitation theory is a clinical theory or model of foot and lower limb biomechanics that is primarily concerned with facilitation motion in the sagittal plane as opposed to other models of foot biomechanics that are based on...

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What is the short foot exercise?

The “short foot exercise” refers to a specific foot designed to strengthen the muscles of the arch of the foot. It does have it fanatical adherents that ascribe magical and mystical “cure all foot ailments” properties to the...

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What causes tired legs and feet?

Feet and legs that ache, especially after a hard day at work standing on your feet all day is very common. You can’t wait to get home from work and kick your shoes off and get off your feet. Some of these are due to a specific problem like...

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What is Helbing sign?

Helbing sign or Helbing’s sign is an observation of the alignment of the Achilles tendon from behind when weightbearing. It is seen as the amount of concavity or medial bowing of the Achilles tendon as the calcaneus everts past vertical. It...

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What is supination resistance?

Supination resistance is a concept based on how much force is needed to supinate the foot. As a clinical test is it frequently used to help estimate how much force is needed to supinate the foot. This is considered important in foot orthotic therapy...

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How to fix navicular drop?

The first question is does navicular drop even need fixing? The really is no such thing as a “fix” for navicular drop as its a normal movement. The navicular drop is how much that the height of the navicular drops between semi-weight...

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What does the ‘navicular drop test’ test for?

The navicular drop test is a clinical test that measures how much the navicular bone in the foot drops between neutral position and relaxed or between relaxed and full weightbearing. The navicular drop test only measures sagittal plane excursion of...

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What is navicular drop?

The navicular drop is a clinical assessment measurement or observation of how much the navicular moves in the sagittal plane between either:1. Subtalar joint neutral and subtalar joint relaxedor2. The foot on the ground rested seated and then full...

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