orthesisn.
/ɔːˈθiːsɪs/, U.S. /ɔrˈθisᵻs/ Medicine.
An external appliance serving to support a part of the body; = orthosis n.
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orthesis1956
orthosis1958
orthotic1981
1956 R. L. Bennett in Physical Therapy Rev. 36 721/1 To my knowledge, the words, ‘orthesis’, ‘orthetics’, and ‘orthetic devices’, have not been used before... The word ‘orthesis’ may be defined as a medically prescribed device applied to or around a weakened bodily segment to give support and increased function.
1963 Med. Electronics & Biol. Engin. 1 511/1 Prehensile motion of the hand..is to be performed by an externally powered orthesis, but is not to be preprogrammed and is to be completely controlled by the patient.
1971 Rand Daily Mail (Johannesburg) 4 Sept. 14/1 He has developed various aids for the disabled. The most useful, perhaps, is the motorised orthesis or hand splint which can be connected to a blow-and-suck pipe or any other control system.
2001 Clin. Biomechanics 16 129 Many corrective ortheses were proposed for the orthopaedic treatment of idiopathic scoliosis.
This entry has been updated (OED Third Edition, September 2004; most recently modified version published online March 2022).
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n.1956