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A Biomechanical Analysis of Total and Unicompartmental Knee Arthroplasty Patients during Stair Negotiation Compared to Healthy Controls.

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Title:A Biomechanical Analysis of Total and Unicompartmental Knee Arthroplasty Patients during Stair Negotiation Compared to Healthy Controls.
Authors:Parke, Elizabeth A.
Contributors:Education (department)
Date Issued:Aug 2017
Publisher:University of Hawaiʻi at Mānoa
Abstract:Three-dimensional biomechanical gait analysis is an assessment tool that provides insight
into patient functioning following a total knee arthroplasty (TKA) or a unicompartmental knee
arthroplasty (UKA). Knee flexion moment is a biomechanical variable that provides insight into
an individuals’ willingness to load the knee joint. One challenge of the data collection process
with these patients suffering from osteoarthritis is function, especially pre-operatively, is limited
due to pain and fatigue which can restrict the researcher’s ability to capture the required
information. Additionally, how do both operative groups recover in terms of stair negotiation
ability? Stairs are known to be a more challenging task that occurs with aging, and is even more
challenging in osteoarthritis suffers. The degree to which an individual is able to perform the
stair negotiation task in the absence of pathology remains in question. Results of this dissertation
provide recommendations of the biomechanical data collection process. In patients that present
with lower extremity joint pain and/or fatigue, identifying the force plate during the data
collection process has limited clinical outcomes on biomechanical variables and will limit the
number of redundant trials. Through using stair negotiation as an assessment tool, short-term
(three months following surgery) functional ability favors those patients undergoing UKA.
These UKA patients have knee flexion moments that are more similar to healthy controls.
Furthermore, functional deficits in knee flexion moment remain in TKA patients out to one-year
post-operatively when compared to healthy age-matched controls. Results of this dissertation
also suggests that the long-term difficulty of the stair task in TKA patients is more related to the
osteoarthritis pathology than the aging process as evident by the ability of all of the healthy
controls participants to negotiate the stairs with ease.
Description:Ph.D. Thesis. University of Hawaiʻi at Mānoa 2017.
Rights:All UHM dissertations and theses are protected by copyright. They may be viewed from this source for any purpose, but reproduction or distribution in any format is prohibited without written permission from the copyright owner.
Appears in Collections: Ph.D. - Education

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