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Comparison of mobility and user satisfaction between a microprocessor knee and a
standard prosthetic knee

HOWARD CL; WALLACE C; PERRY B; STOKIC DS
INT J REHABIL RES , 2018, vol. 41, n° 1, p. 63-73
Doc n°: 186332
Localisation : Documentation IRR

D.O.I. : http://dx.doi.org/DOI:10.1097/MRR.0000000000000267
Descripteurs : EC16 -PROTHESE DE MEMBRE INFERIEUR

Insufficient evidence of the benefits provided by costlier microprocessor knees
(MPKs) over nonmicroprocessor knees (NMPKs) often causes concern when considering
MPK prescription. Thus, more studies are needed to demonstrate differences
between MPKs and NMPKs and define sensitive outcomes to guide MPK prescription.
The aim of this study was to evaluate the impact of switching from NMPK to MPK on
measures of mobility and preference. Seven long-term NMPK users (all men, ages
50-84, 3-64 years postamputation) participated in this study, which use a
single-subject design (ABA or BAB; A=NMPK, B=MPK). Mobility was assessed with the
Amputee Mobility Predictor, Berg Balance Scale (BBS), L-Test, 6-Min Walk Test
(6MWT) with Physiological Cost Index, and self-selected normal and very fast gait
speeds. The preference between NMPK and MPK was evaluated by the Prosthesis
Evaluation Questionnaire (PEQ) and the visual analog scale. Mobility improved
with the MPK in six of seven participants, which was most often captured with BBS
(median: +6 points) and 6MWT (median: +63 m). These improvements typically
exceeded minimal clinically important difference or minimal detectable change
thresholds. Most participants scored the MPK higher on the PEQ (median: +20
points) and six of seven expressed a global preference toward MPK. In the BAB
group, the Amputee Mobility Predictor and BBS correlated with perception of
change on several PEQ domains (Rho>/=0.59). In conclusion, MPKs may provide
better outcomes and user satisfaction, particularly in those with lower mobility
function. BBS and 6MWT were found to be the most sensitive measures to capture
changes in mobility while using MPK for several weeks.

Langue : ANGLAIS

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