Publications by authors named "Threlkeld A"

Background: Substance use disorders (SUDs) remain a growing public health issue, with drug- and alcohol-related deaths continuing to increase. A myriad of barriers prevent many with SUDs from seeking care. Telehealth interventions are well-positioned to reduce barriers and increase engagement in SUD treatment.

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Objective: To report the initial case of robotic-assisted level IV inferior vena cava (IVC) tumor thrombectomy, with the supra- and infradiaphragmatic caval segments managed purely by a robotic-assisted technique.

Methods: A 67-year-old female presented with a 5.3 × 2.

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Muscle co-activation around the knee is important during ambulation and balance. The wide range of methodological approaches for the quantification of co-activation index (CI) makes comparisons across studies and populations difficult. The present study determined within- and between-session reliability of different methodological approaches for the quantification of the CI of the knee extensor and flexor muscles during maximum voluntary isometric contractions (MVICs).

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The purpose of this study was to determine optimal stimulation parameters and calculation methods to estimate quadriceps voluntary activation while minimizing participant discomfort. Twelve healthy adults (8 men and 4 women; mean ± SD, age = 36.8 ± 15.

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Objectives: To determine the effects of fibular taping on ankle dorsiflexion range of motion (ROM) and dynamic balance in individuals with chronic ankle instability (CAI).

Design: Single-blind, randomized crossover.

Methods: Twenty-three individuals (age=23.

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Background And Purpose: Clinical reasoning is a core tenet of physical therapy practice leading to optimal patient care. The purpose of this case was to describe the outcomes, subjective experience, and reflective clinical reasoning process for a child with cerebral palsy using the International Classification of Functioning, Disability, and Health (ICF) model.

Case Description: Application of the ICF framework to a 9-year-old boy with spastic triplegic cerebral palsy was utilized to capture the interwoven factors present in this case.

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Using gait analysis, we documented kinetic and temporospatial changes over a 7-year period in a single healthy individual with a transfemoral amputation walking with three different knees and matched foot components. The knee/foot pairs in chronological order were Four Bar Endolite knee/Endolite Dynamic Response foot; Ossur Total Knee 2000/Pathfinder I foot; and C-Leg knee/IC40 C-walk foot. The design of the suspension and socket were unchanged across the three prostheses.

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Objective: Quantify the effects of increased amplitude and rate of muscle stretch on parkinsonian rigidity.

Methods: Eighteen subjects with Parkinson's disease participated in this study. Subjects' tested hand was passively displaced through 60° and 90° ranges of wrist flexion and extension at velocities of 50°/s and 280°/s in both treated and untreated conditions.

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Parkinsonian rigidity is characterized by an increased resistance of a joint to externally imposed motion that remains uniform with changing joint angle. Two candidate mechanisms are proposed for the uniformity of rigidity, involving neural-mediated excitation of shortening muscles, i.e.

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Objective: Quantify the enhancement of parkinsonian rigidity associated with a contralateral activation maneuver.

Methods: Twelve subjects with PD and eight controls participated in the study protocol. Subjects' tested hand was displaced by a servo-motor throughout wrist flexion and extension motions of 60° without and with a concurrent gripping activation in the contralateral hand, referred to as Passive and Active conditions, respectively.

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While surface electromyography (SEMG) can accurately register electrical activity of muscles during gait, there are no methods to estimate muscular force non-invasively. To better understand the mechanical behavior of muscle, we evaluated surface muscle pressure (SMP) in conjunction with SEMG. Changes in anterior thigh radial pressure during isometric contractions and gait were registered by pressure sensors on the limb.

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Introduction: Body weight supported treadmill training (BWSTT) using high treatment frequency has been shown to improve gait after spinal cord injury (SCI). This case report describes the use of BWSTT at a very low treatment frequency.

Subject: The subject was a 19 y.

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Objective: To examine the correlation between rigidity and interaction of stretch reflex and shortening reaction during passive movements of the wrist and to compare this correlation with that between rigidity and stretch reflex alone.

Methods: Twelve subjects with Parkinson's disease participated in the study in Off-medication and On-medication states. A servomotor imposed wrist flexion and extension within +/-30 degrees at velocities 50 and 280 degrees/s, while joint torque and EMG of the wrist flexors and extensors were recorded.

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Background And Purpose: Reliable measures are needed to document functional status and disease progression for people with Parkinson disease (PD). We, therefore, evaluated the reliability of the Physical Performance Test (PPT) for people with PD.

Methods: Fourteen community-dwelling subjects with PD participated: 8 males, 6 females; modified Hoehn and Yahr Stages 2 and 2.

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Purpose: The aim of this study was to evaluate differences in the persistency and treatment costs for latanoprost, bimatoprost, or beta-blockers in open-angle glaucoma or ocular hypertensive patients.

Methods: This study was a retrospective, multicenter, parallel, active-controlled comparison of patients who were prescribed with ocular hypotensive monotherapy between September 1996 and August 2002.

Results: 1,182 patients were included.

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Our purpose was to analyze the effects of selected levels of body weight support (BWS) on lower extremity kinematics of normal subjects at a predetermined treadmill speed. Seventeen non-disabled volunteers walked on a treadmill at 1.25 ms(-1).

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This article explores major considerations for analysis and discussion of the role of the clinical doctorate as the first professional degree in physical therapist education (DPT). A process for this analysis is posed based on a conceptual framework developed by Stark, Lowther, Hagerty, and Orczyk through grounded theory research on professional education. External influences from society and the profession, institutional and programmatic influences, and articulation of critical dimensions of professional competence and professional attitudes as major categories are discussed in relation to the DPT.

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Purpose: To report the accuracy of telemedical slit-lamp evaluation in examination of ocular adnexa and anterior segment.

Methods: By means of contingency tables, slit-lamp findings by live examination and by real-time telemedicine were compared in 50 eyes of 25 patients.

Results: Sensitivity percentages (proportion with findings correctly identified by telemedicine)/specificity percentages (proportion without the finding that was correctly identified by telemedicine) were 100/64 for eyelid mass, 100/85 for conjunctival pigment, 100/100 for posterior synechiae, 80/0 for blepharitis, 83/93 for iridotomy, 70/93 for pinguecula, 75/93 for iris lesions, 56/98 for corneal scar, 0/100 for chamber inflammation, 57/93 for nuclear cataract, and 37/100 for intraocular lens presence.

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Purpose: To evaluate the effect of contact transscleral diode cyclophotocoagulation on intraocular pressure (IOP), vision, number of medications, and complications in a heterogenous population of patients with refractory glaucoma.

Methods: Clinical data for all patients undergoing contact transscleral diode cyclophotocoagulation for refractory glaucoma at the Medical College of Georgia between November 1994 and November 1996 were reviewed. Forty-seven eyes of forty-seven patients followed for at least one month were included.

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Objective: To examine histologic changes in conjunctival vasculature during the first 72 hours following filtering surgery with adjunctive mitomycin C in rabbits.

Design: Thirty-six New Zealand white rabbits underwent unilateral posterior lip sclerectomy. In 18 rabbits mitomycin C (0.

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Purpose: To investigate the efficacy of argon laser trabeculoplasty (ALT) for the treatment of primary open-angle glaucoma (POAG) and of glaucoma associated with exfoliation syndrome (EXF).

Methods: Review of > 200 charts from patients treated with ALT between 1981 and 1987 identified 66 POAG and 29 EXF eyes that underwent initial 180 degrees treatment. Variables including baseline intraocular pressure (IOP), age, sex, angle pigmentation, and follow-up IOP were studied with numerous statistical analyses.

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Background And Objective: Topical apraclonidine hydrochloride 1% is effective for controlling the intraocular pressure (IOP) rise following argon laser trabeculoplasty (ALT). The 0.5% formulation has recently become available commercially.

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The purpose of this study was to quantify the time between the cessation of EMG activity and cessation of torque production, or relaxation electromechanical delay, (R-EMD) of the quadriceps at three angular movement velocities. A Biodex dynamometer passively moved the right knee of 25 males through a given range at three velocities (10, 60 and 120 degrees per second). Subjects were instructed to actively extend their knees to a visual target, then to immediately relax.

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Clinical assessment of the patellofemoral alignment is frequently performed, yet the repeatability of these measurements has not been previously investigated. This study examined the reliability of measuring patellofemoral alignment. The Q angle, A angle, and patellar orientation (mediolateral tilt, mediolateral position, superoinferior tilt, and rotation) of 27 healthy subjects were measured over three trials using standardized positioning and operationally defined goniometric, pluri-cal caliper, and visual estimation measurement techniques.

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