Rehabilitation and Therapy Commons^™

Joint Loading Factors Of Articular Cartilage Structure In Healthy And Acl-Injured Knees, Elizabeth Wellsandt

Theses & Dissertations

Articular cartilage structure and chondrocyte health are sensitive and reliant on dynamic joint loading during activities. The risk of osteoarthritis (OA) is high after anterior cruciate ligament (ACL) injury, but mechanisms underlying its development are poorly understood. The overall goals of this work were 1) to determine the association between measures of individual and cumulative knee joint loading with T2 relaxation times in the knee cartilage of young individuals without injury and 2) to determine if these same knee joint loading factors are associated with cartilage T2 relaxation time one month after ACL injury. The central hypotheses was that lower …

Assessment Of Landing Biomechanics And Rehabilitation After Anterior Cruciate Ligament Reconstruction, Sheila S. Gagnon

Electronic Thesis and Dissertation Repository

Aberrant landing biomechanics increase the risk of anterior cruciate ligament (ACL) injury and are a focus of rehabilitation after ACL reconstruction. The purpose of the present thesis was to develop and evaluate methods of assessing landing mechanics and investigate the effects of different rehabilitation strategies after ACL reconstruction. Three studies were conducted. The first study used a Delphi process to develop the content of a Clinician-Rated Drop Vertical Jump Scale to evaluate jump landing mechanics during rehabilitation after ACL reconstruction. Twenty experts participated in four rounds of questioning, resulting in 92% agreement for knee valgus collapse, lateral trunk lean, insufficient …

Validation Of An Inertial-Measurement-Unit System For Calculating Hip And Knee Flexion Angles During Gait, Joonsun Park

Master's Theses

Technological advances regarding Inertial Measurements Units (IMUs) have positioned this type of sensor as an alternative for camera-based motion capture. This study introduces a new IMU based system (IMU_sys) to measure hip and knee flexion angles. PURPOSE: To validate the use of a five-sensor IMU_sys for the measurement of knee and hip flexion angles during gait in adults and pediatrics at two different time points. METHODS: Bilateral hip and knee flexion patterns (LH, RH, LK, and RK) of twenty-two healthy participants (12 adults and 10 pediatric) between the ages of 8 – 35 years were investigated. Participants …

An Analysis Of A New Shoe Technology In The Gait Patterns Of A Child With A Neurological Disability, Emma Madonna, Jeff Bauer

The SUNY Journal of the Scholarship of Engagement: JoSE

This study focused on the application of a unique technology originally designed to supply biofeedback to dancers, but in this case was used to assist a child learning to walk while battling the effects of Cerebral Palsy. The musical shoes, called Electroskip^TM, utilize a biofeedback system that generates variable sounds/beats/songs when an individual is walking and placing pressure on their heel or toe. The study lasted six weeks with two sessions per week. Each session started with shoes fitted with Electroskip^TM technology placed on the child’s feet. When instructed by the researcher the child would proceed to …

Effect Of Unilateral Lower-Limb Amputation On Intact Limb Biomechanics: A Systematic Review, Amanda Boyd

Master's Theses

The United States will perform 30,000-40,000 amputations this year (Ertl et al., 2019). As a common medical intervention, there is extensive research regarding rehabilitation strategies and post-operative care. Many studies have explored the effects of the affected limb and prosthetic intervention yet have neglected that of the contralateral limb (De Asha et al., 2014; Jones et al., 2006; Winter & Sienko, 1988). Studies have reported an increase in secondary musculoskeletal conditions among unilateral lower-limb amputees, particularly in the intact limb, indicating the need for additional research (Gailey et al., 2008). The purpose of this systematic review was to investigate the …

Lower Extremity Kinetics And Muscle Activation During Gait Are Significantly Different During And After Pregnancy Compared To Nulliparous Females, Jennifer J. Bagwell, Nicholas Reynolds, Michelle Walaszek, Hannah Runez, Kristina Lam, Jo Armour Smith, Dimitrios Katsavelis

Physical Therapy Faculty Articles and Research

Background

Low back, pelvic, and lower extremity pain are common during and after pregnancy. Understanding differences in mechanics between pregnant and non-pregnant females is a first step toward identifying potential pathological mechanisms. The primary purpose of this study was to compare joint kinetics and muscle activation during gait between females during and after pregnancy to nulliparous females.

Methods

Twenty pregnant females completed testing on three occasions (second trimester, third trimester, and post-partum), while 20 matched, nulliparous controls were tested once. Motion capture, force data, and surface electromyography were averaged across seven trials during gait. Lower extremity kinematics, lower extremity moments …

Effect Of Sport-Specific Demands On Swimmer's Shoulder, Jordan A. Thielbar

Honors Thesis

Swimming is a unique sport in that the shoulders generate most of the propulsive force. Therefore, due to the large amounts of repetitive force, the shoulders generate during freestyle, swimmer’s shoulder is the most common injury among competitive swimmers. Freestyle biomechanics, muscular imbalances and posture all play a pertinent role in a swimmer’s risk for developing a shoulder injury during their swimming career. Swimmers typically develop large muscular imbalances between their dominant and nondominant shoulders due to several sport-specific demands including freestyle stroke mechanics, breathing, and body roll. These muscular imbalances alter a swimmer’s posture and freestyle biomechanics which eventually …

The Effects Of Somatosensory Input On Gait In Individuals Post-Stroke, Victor Hung, Amanda Reilly, Rachel Wood, Nikita Yuskov

UNLV Theses, Dissertations, Professional Papers, and Capstones

Background and Purpose: Stroke is a leading cause of disability that results in various neurological deficits, one of which is hemiplegia. This deficit alters the gait cycle, resulting in decreased propulsion force by plantar flexor muscles, decreased activation of dorsiflexor (DF) muscles, and increased coactivation of antagonistic ankle muscles. Stroke also leads to altered somatosensory input which results in decreased balance and gait speed, ultimately increasing fall risk. Therapies targeting increased somatosensory input have been shown to be beneficial in stroke as well as other neurological populations. However, no known studies have investigated the acute effects of local vibration to …

The Effects Of A 6-Week Controlled Whole-Body Vibration Training Program In Reducing Falls Risk Among Healthy Older Adults, Fabricio Saucedo Jr.

Open Access Theses & Dissertations

Falling is the second leading cause of accidental or injury-related death in the aging population worldwide and a leading cause of serious injury. Whole-body vibration (WBV) training has been implemented as a way to improve functional performance among the elderly and reduce the falls risk. The purposes of this study were: 1) examine to what extent a six-week course of WBV training reduced falls risk and improved fall outcomes in response to slips, and 2) examine whether the benefits of WBV training could be retained at least 2 months after the completion of the entire training session. A total of …

An Evaluation Of Postural Control And Balance After Anterior Cruciate Ligament Reconstruction, Kathryn Lucas

Theses and Dissertations--Rehabilitation Sciences

Over 100,000 anterior cruciate ligament reconstructions (ACLR) occur annually in the United States, with one in four individuals sustaining a second injury within the first two years after reconstruction. Due to the proprioceptive nature of the anterior cruciate ligament, the lack of regaining postural control and balance are likely large contributors to the rate of secondary injuries after ACLR. Recent literature has identified cerebral changes after anterior cruciate ligament injury and surgery, likely due to altered sensation and feedback loops. However, no study thus far has investigated the neurological feedback loops that may place this group at higher risk of …

Influences Of Functional And Psychological Factors On Biomechanics Following An Anterior Cruciate Ligament (Acl) Reconstruction, Chelsey Roe

Theses and Dissertations--Rehabilitation Sciences

Objective: The aims of this research were to identify gaps in the literature related to return to sport (RTS) test batteries following primary anterior cruciate ligament reconstruction (ACLR) (Aim 1) and define recovery in athletes from 4-9 months after ACLR across three domains: 1) psychological recovery and biomechanics (Aim 2), 2) rehabilitation quantity and biomechanics (Aim 3), and 3) functional performance and biomechanics (Aim 4). Ultimately, the results of this research would quantify recovery following ACLR in athletes with a desire to RTS and identify objective criteria throughout rehabilitation prior to RTS.

Participants: Twenty-two post-ACLR athletes 17 females, 8 males, …

Improvement In Overground Walking After Treadmill-Based Gait Training In A Child With Agenesis Of The Corpus Callosum, Gena Henderson, Matthew Beerse, Huaqing Liang, Diego Ferreira, Jianhua Wu

Physical Therapy Faculty Research

Background: Agenesis of the corpus callosum (ACC) is a rare congenital brain defect that produces a wide variety of cognitive and motor impairments. Literature regarding the response of pediatric populations with ACC to physical rehabilitation is scarce. Treadmill-based gait training (TT) has been shown to improve walking ability in some pediatric populations but has not been investigated in children with ACC.

Objective: The purpose of this study was to investigate the effect of a novel treadmill intervention paradigm on the gait parameters of a child with ACC.

Design: A single-participant design with 2 phases was used.

Methods: The settings were …

Can The Forward-Step-Down Test Be Used Reliably In The Clinical Setting To Assess Movement Changes Resulting From Maximal Exertion? A Pilot Study, Erin Mccallister, Daniel W. Flowers

Internet Journal of Allied Health Sciences and Practice

Introduction: Visual assessment of lower extremity mechanics is used frequently in clinical practice, and objective scoring of the visual assessment is beneficial to improve objectivity of patient evaluation. In addition, lower extremity mechanics change with fatigue and these changes may increase the risk of lower extremity injury. The Forward-Step-Down Test (FSDT) is one such objective tool, but its ability to detect changes in movement quality in response to exertion are not known. Methods: This study utilized a repeated-measures design, where the participants were scored on the FSDT before performing the Bruce protocol for an exertion stimulus. The participants were re-scored …