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Subtalar Joint Location Test

The Subtalar joint axis position can vary between individuals. The location of the Subtalar Joint Axis determines the amount of force necessary to invert the foot.

With the patient in a prone position, the leg is rotated so that the foot is vertical. Pressure is put on the plantar surface of the calcaneus, to invert and evert the foot along a medial/lateral line near the calcaneous.

The point at which the foot does not invert or evert, is considered to be the location of the STJ axis. This process is repeated along the foot to obtain several points, so a line can be drawn on the plantar aspect of the foot, representing the axis.

The location of the axis determines the results of the Supination Test.

Notes

The location of the axis determines the results of the Supination Test.

About Interpod’s Biomechanical Tests

Interpod utilises the most current biomechanical tests to aid with orthotic prescription. The following relevant biomechanical tests will help practitioners maximise patient outcomes.

The purpose of a biomechanical test is to determine if patient symptoms are mechanical in nature or whether they are caused by other factors such as illness. The results of a biomechanical test can be used to highlight the pathomechanics of patient symptoms. In addition, they can be used to determine the most appropriate orthotic and possible orthotic additions if required.

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