The biomechanical examination is a critical part of the evaluation for
functional foot orthotics. Assessment includes muscle strength, range-of-motion
at important joints, and the angular relationships of segments of the foot and
leg. This information is considered when prescribing an orthotic
appropriate to the patient's needs.
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The doctor evaluates hip range-of-motion with the knee
flexed. |
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Range of hip flexion with the knee extended is evaluated.
Tight hamstring muscles will result in diminished motion. |
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Limitation on ankle extension may result from tight calf
muscles (Gastrocnemius and Soleus) |
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Evaluation of the rear-foot, includes motion at the sub-talar
joint, and its angular relationship to the lower leg. |
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Motion at the great-toe joint (first
metatarsal-phalangeal joint) is critical for the forward progression
of the body during gait. A lack of motion here can cause an early
arthritis in the joint, and even lower back pain! |
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The biomechanical evaluation includes an evaluation of foot,
leg and body position while weight-bearing. |
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Finally, plaster splints are applied to the feet. |
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The feet are held in neutral position. Improper
casting technique and biomechanical assessment are leading causes of
treatment failure and/or the inability to tolerate orthotics
devices.
Proper functional orthotics can not be made from foam
impressions, foot-prints, etc. |
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Here the casts are dry and ready to be removed. |
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A short time later, VOILA! a finished functional foot
orthotic (one of a pair). |
