Rocker sole and instability

Hello, If you have a patient with balance problems, let say a patient with diabetic foot at risk of forefoot ulceration, and a rigid rocker sole is of help in reducing the pressure under forefoot, how can be decided till which grade of patient instability the rocker sole can be used? How this degree of instability can be measured? Thanks, Daniel

Hello, If you have a patient with balance problems, let say a patient with diabetic foot at risk of forefoot ulceration, and a rigid rocker sole is of help in reducing the pressure under forefoot, how can be decided till which grade of patient instability the rocker sole can be used? How this degree of instability can be measured? Thanks, Daniel

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Rocker sole and instability