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Functional Foot Typing

The Functional Foot Typing® (FFT) System is the foundation of Wellness Biomechanics. Everything starts with a foot typing.

Functional Foot Typing® upgrades Dr. Scherer's foot typing system into a profiling system that classifies all feet into subgroups called foot types.

Each subgroup is composed of subjects with foot type-specific complaints and biomechanical needs that other types do not share. There are common characteristics that allow practicing professionals to diagnose the foot type and confirm the testing and diagnostic process.

Functional Foot Typing offers better diagnosis, better treatment, better monitoring and better outcomes when practiced by a skilled professional with an interest in biomechanics and orthotics.

Functional Foot Typing allows for custom care of biomechanically related complaints as well as preventive, performance enhancement and quality of life issue because treatment can be controlled by type allowing aggressive care to be utilized that would otherwise harm other types.

In The Functional Foot Typing system, the total range of motion and the positional
relationships within the rearfoot (the subtalar joint) and the forefoot (the midtarsal joint) are
gathered in open chain utilizing two tests of the rearfoot and two tests of the forefoot. They are the Rearfoot SERM and PERM tests and The Forefoot PERM and SERM tests.

By taking the Supinatory End Range of Motion (SERM) and the Pronatory End Range of Motion (PERM) the RF FFT and the FF FFT are determined in two minutes. The Rearfoot SERM-PERM and the Forefoot SERM-PERM tests each have four possible types that are designated Rigid, Stable, Flexible and Flat each with their own ranges of motions, and positional differences that define them.

The rearfoot functional foot types
In the rigid rearfoot type, the rearfoot total range of motion is less than 15 degrees with the
calcaneus inverted to the lower leg at both SERM and PERM.
In the stable rearfoot type, the rearfoot total range of motion is 15 degrees with
the calcaneus inverted to the lower leg at SERM and perpendicular to the lower leg at PERM.
In the flexible rearfoot type, the rearfoot total range of motion is greater than 15 degrees
with the calcaneus inverted to the lower leg at SERM and everted to the lower leg at PERM.
In the flat rearfoot type, the rearfoot total range of motion is greater than 15 degrees in both
SERM and PERM.
The forefoot foot functional foot types
In the rigid forefoot type, both the SERM and PERM position of 1st met horizontal bisection
is plantarflexed to the 5th met horizontal bisection.
In the stable forefoot type, the SERM position of the 1st met horizontal bisection
plantarflexed to the 5th met horizontal bisection and the PERM position of the 1st met
horizontal bisection is online with the 5th met horizontal bisection.
In the flexible forefoot type, the SERM position of the 1st met horizontal bisection is
plantarflexed to the fifth metatarsal head horizontal bisection and the PERM position of the
1st met horizontal bisection is dorsiflexed to the 5th met horizontal bisection.
In the flat forefoot type, both the SERM and PERM position of the 1st met horizontal
bisection is dorsiflexed to the fifth met horizontal bisection.

Functional Foot Typing can be used as a starting platform for foot orthotics, muscle training and foot surgery by both professionals and the foot suffering public alike.