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Ipsilateral Scapular Cutaneous Anchor System : An alternative for the harness in body-powered upper-limb prostheses

HICHERT M; PLETTENBURG DH
PROSTHET ORTHOT INT , 2018, vol. 42, n° 1, p. 101-106
Doc n°: 187060
Localisation : Documentation IRR

D.O.I. : http://dx.doi.org/DOI:10.1177/0309364617691624
Descripteurs : EB2 - AMPUTATION DU MEMBRE SUPERIEUR

BACKGROUND: Body-powered prosthesis users frequently complain about the poor
cosmesis and comfort of the traditional shoulder harness.
The Ipsilateral
Scapular Cutaneous Anchor System offers an alternative, but it remains unclear to
what extent it affects the perception and control of cable operation forces
compared to the traditional shoulder harness. OBJECTIVE: To compare cable force
perception and control with the figure-of-nine harness versus the Ipsilateral
Scapular Cutaneous Anchor System and to investigate force perception and control
at different force levels. STUDY DESIGN: Experimental trial. METHODS: Ten male
able-bodied subjects completed a cable force reproduction task at four force
levels in the range of 10-40 N using the figure-of-nine harness and the Anchor
System. Perception and control of cable operating forces were quantified by the
force reproduction error and the force variability. RESULTS: In terms of force
reproduction error and force variability, the subjects did not behave differently
when using the two systems. The smallest force reproduction error and force
variability were found at the smallest target force level of 10 N. CONCLUSION:
The Anchor System performs no differently than the traditional figure-of-nine
harness in terms of force perception and control, making it a viable alternative.
Furthermore, users perceive and control low operation forces better than high
forces. Clinical relevance The Ipsilateral Scapular Cutaneous Anchor System
offers an alternative for the traditional harness in terms of cable operation
force perception and control and should therefore be considered for clinical use.
Low cable operation forces increase the perception and control abilities of users.

Langue : ANGLAIS

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