Abstract

LUENGAS-C., Lely A.; TOLOZA-C, Daissy C.  and  WANUMEN, Luis F.. Use of Information Theory to evaluate the behavior of static stability in transtibial amputations. RISTI [online]. 2020, n.40, pp.15-30.  Epub Dec 31, 2020. ISSN 1646-9895.  https://doi.org/10.17013/risti.40.15-30.

Information theory (IT) was used to examine the influence of amputation on stability, the pressure center (CoP) of nine transtibial amputees and nine non-amputees was measured. Diffusion analysis of nonlinear stabilograms was performed and infometric measurements were calculated. Stabilograms indicated differences in CoP between the two groups, in the anteroposterior (AP) and medial-lateral (ML) directions, the CoP excursion being higher in amputees, there is an association between amputation and stability. IT revealed the incidence of the CoP displacement in the AP and ML directions on stability, in amputees the greatest affectation of stability occurs AP in the non-amputated side, they use hip and knee strategy to maintain stability postural. This is the first report of CoP analysis in transtibial amputees using IT.

Keywords : Transtibial amputation; Stability; Posture; Information Theory.

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