Biomechanics

How to do the lunge test?

The lunge test is a weightbearing measurement of the static range of motion of the ankle joint that has been shown to have good reliability and a limitation in it has been associated with an increased risk for some injuries. To do a lunge test, you...

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What is forefoot varus?

By definition, forefoot varus is an pathomechanical entity in which the plantar plane of the forefoot is inverted relative to a perpendicular bisection of the rear of the calcaneus when the subtalar joint is in its defined neutral position and the...

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What is the Foot Posture Index used for?

The Foot Posture Index is a tool that has 6 observations associated with it to quantify the posture or alignment of the foot during weightbearing. It built on the limitations of previous measurements (which most tend to be unreliable) and...

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What is the foot posture index?

The Foot Posture Index is a tool that clinicians and researchers can use for assessing the posture of the foot. Feet come in all sorts of shapes and sizes and there needs to be a way to classify them to help decide when something is not normal, to...

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What is Forefoot Valgus?

For our purposes here forefoot valgus is defined as a deviation in the frontal plane when the subtalar joint is held in the defined neutral position and the lateral forefoot is loaded or dorsiflexed, resulting in a forefoot that is everted relative...

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What exercises can be done for forefoot supinatus?

Forefoot supinatus is defined as a soft tissue contracture of the forefoot in which the forefoot is in an inverted or supinated position relative to the rearfoot when the rearfoot is in its defined neutral position. The cause of forefoot supinatus...

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What is forefoot supinatus?

Forefoot supinatus is defined as a soft tissue contracture in which the forefoot is inverted on the rearfoot when the rearfoot is in it defined neutral position and the midtarsal joint is maximally pronated. This looks similar to forefoot varus, but...

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What is functional hallux limitus?

A functional hallux limitus is by definition a functional limitation of the range of motion at the hallux or first metatarsophalangeal joint. The limitation in the range of motion only happens when “functioning”, such as walking. The range of motion...

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