Journal
KNEE
Volume 25, Issue 1, Pages 73-82Publisher
ELSEVIER
DOI: 10.1016/j.knee.2017.11.010
Keywords
Total knee arthroplasty; Biofeedback; Gait characteristics
Categories
Funding
- IS Peery Discovery Program in Musculoskeletal Restoration
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Background: Abnormal knee mechanics frequently follow total knee arthroplasty (TKA) surgery with these deficits amplifying as task demands increase. Knee-kinetic biofeedback could provide a means of attenuating gait abnormalities. The purposes of this study were as follows: (1) to describe the gait characteristic differences between patients with TKA and non-TKA adults during level (low-demand) and decline (high-demand) walking; and (2) where differences existed, to determine the impact of knee-kinetic biofeedback on normalizing these abnormalities. Methods: Twenty participants six months following a primary TKA and 15 non-TKA peers underwent gait analysis testing during level and decline walking. Knee-kinetic biofeedback was implemented to patients with TKA to correct abnormal gait characteristics if observed. Results: Patients with TKA had lower knee extensor angular impulse (p < 0.001), vGRF (p = 0.001) and knee flexion motion (p = 0.005) compared to the non-TKA group during decline walking without biofeedback. Patients with TKA normalized their knee extensor angular impulse (p = 0.991) and peak vGRF (p = 0299) during decline walking when exposed to biofeedback. No between-group differences were observed during level walking. Groups were similar in age, gender, body mass index, physical activity level, pain interference and depression scores (p > 0.05). Conclusion: Patients with TKA demonstrate abnormal gait characteristics during a high-demand walking task when compared to non-TKA peers. Our findings indicate that knee-kinetic biofeedback can induce immediate improvements in gait characteristics during a high-demand walking task. There may be a potential role for the use of visual knee-kinetic biofeedback techniques to improve gait abnormalities during high-demand tasks following TKA. (C) 2017 Elsevier B.V. All rights reserved.
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