noun, plural orthoses [awr-thoh-seez] .
Medicine/Medical. the correction of orthopedic maladjustments.
an orthotic.

1955–60; < Greek órthōsis a making straight, guidance, equivalent to orthō- (variant stem of orthoûn to straighten, verbal derivative of orthós straight) + -sis -sis

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World English Dictionary
orthosis (ɔːˈθəʊsɪs)
n , pl -ses
an artificial or mechanical aid, such as a brace, to support or assist movement of a weak or injured part of the body

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American Heritage
Medical Dictionary

orthosis or·tho·sis (ôr-thō'sĭs)
n. pl. or·tho·ses (-sēz)
An external orthopedic appliance that prevents or assists the movement of the spine or limbs.

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The design of a motion control system for a powered reciprocating gait orthosis is considered.
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