Article

For U.S military service members with transfemoral amputations there are
different prosthetic knee systems available that function differently. For
example the C-Leg((R)) (C-Leg, Otto Bock Healthcare, GmbH, Duderstadt, Germany)
is a passive microprocessor knee, and the Power Knee (PK, Ossur, Reykjavik,
Iceland) provides active positive power generation at the knee joint. This study
examined both step-up and sit-to-stand tasks performed by service members using
C-Leg and PK systems to determine if the addition of positive power generation to
a prosthetic knee can improve symmetry and reduce impact to the remaining joints.
For both tasks, average peak sagittal knee powers and vertical ground reaction
forces (GRFs) were greater for the intact limb versus the amputated limb across
PK and C-Leg groups. For the sit-to-stand task, peak knee power of the amputated
limb was greater for PK users versus C-Leg users. Vertical GRFs of the intact
limb were greater for the C-Leg versus the PK. The performance of the PK relative
to the C-Leg during a STS task illustrated few differences between components and
no effect on the intact limb.
CI - Published by Elsevier B.V.

Langue : ANGLAIS