Off-campus UMass Amherst users: To download campus access dissertations, please use the following link to log into our proxy server with your UMass Amherst user name and password.
Non-UMass Amherst users: Please talk to your librarian about requesting this dissertation through interlibrary loan.
Dissertations that have an embargo placed on them will not be available to anyone until the embargo expires.
ORCID
N/A
Access Type
Open Access Thesis
Document Type
thesis
Degree Program
Kinesiology
Degree Type
Master of Science (M.S.)
Year Degree Awarded
2015
Month Degree Awarded
September
Abstract
INTER-SEGMENT COORDINATION VARIABILITY POST ANTERIOR CRUCIATE LIGAMENT RECONSTRUCTION
SEPTEMBER 2015
DEVIN K. KELLY, B.S., UNIVERSITY OF MASSACHUSETTS AMHERST
M.S., UNIVERSITY OF MASSACHUSETTS AMHERST
Directed by: Dr. Joseph Hamill
There is an increased risk for ipsilateral graft rupture and contralateral ACL rupture following ACL reconstruction surgery (ACLR) despite return to sport clearance. The reason for this increased risk is not well understood. Previous literature has shown that decreased coordination variability is indicative of an injured system regardless of the absence of pain. PURPOSE: To quantify inter-segment coordination variability during three portions of the stance phase of gait in athletes at three progressive time points post-surgery compared to the contralateral limb (NI) and healthy controls. METHODS: Three-dimensional kinematic and kinetic data were collected for 10 ACLR and 10 healthy athletes matched for age, gender, and activity level. The ACLR group was measured at 4 weeks, 12 weeks, and when cleared to run post-surgery. Kinematic data were used in a modified vector coding technique to determine inter-segment coordination variability of lower extremity couples of interest. Statistical significance was determined using two factor multivariate ANOVAs (limb x visit) for early (1-33%), mid (34-66%), and late (67-100%) stance with alpha level set at .05. Tukey post-hoc tests were performed where appropriate. RESULTS: ACLR athletes have decreased inter-segment coordination variability of the involved lower extremity during the late stance phase of gait compared to both the contralateral limb and healthy controls at 4 weeks post-surgery. By 12 weeks post-surgery there were improvements in joint function as exemplified by inter-segment coordination variability of the ACLR involved limb becoming similar to the healthy control limb. CONCLUSION: Inter-segment coordination variability during late stance in the present study is not an indication for the increased risk for ipsilateral graft rupture and contralateral ACL rupture in ACLR athletes.
DOI
https://doi.org/10.7275/7518184
First Advisor
Joseph Hamill
Second Advisor
Katherine Boyer
Third Advisor
Richard Van Emmerik
Recommended Citation
Kelly, Devin K., "Inter-Segment Coordination Variability Post Anterior Cruciate Ligament Reconstruction" (2015). Masters Theses. 278.
https://doi.org/10.7275/7518184
https://scholarworks.umass.edu/masters_theses_2/278
Included in
Biomechanics Commons, Laboratory and Basic Science Research Commons, Motor Control Commons