Tone Reduction Modifications Include:
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Thigh & knee sections modified to given measurements with 6 - 10 mm (1/4 - 3/8") of clearance for double uprights
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Squaring and leveling the plantar surface of the cast
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Adding 5 mm (3/16") build-ups to the medial and lateral malleoli. This will increase the overall ML by 10 mm
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Adding 3 mm (1/8") build-ups to the navicular and calcaneal tuberosity
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Modifying the plantar surface of the cast to a depth of 3 mm
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If the order calls for a medial/lateral tibial extension to control varus/valgus, a build-up is made to emphasis the extension side but still maintain a 6 mm build-up
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If the order calls for a raised forefoot trimline, 3 mm will be added to the MTP joint that is being covered by plastic
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Adding 3 mm build-ups will be added to any marked bony areas