John M. Popovich
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View article: A meta-model of low back pain to examine collective expert knowledge of the effects of treatments and their mechanisms
A meta-model of low back pain to examine collective expert knowledge of the effects of treatments and their mechanisms Open
Purpose Low back pain (LBP) is a complex, multifactorial condition with diverse contributors across biopsychosocial domains. Although personalized treatment is advocated, clear guidance on tailoring interventions is lacking. To help addres…
View article: Physical Medicine & Rehabilitation Physicians’ Collective Insight Points to Psychosocial Factors as Central to Understanding Low Back Pain.
Physical Medicine & Rehabilitation Physicians’ Collective Insight Points to Psychosocial Factors as Central to Understanding Low Back Pain. Open
View article: Association of Loading Asymmetry During Squatting With Loading Asymmetry During Drop Jump After ACL Reconstruction: Implications for Rehabilitation Progression
Association of Loading Asymmetry During Squatting With Loading Asymmetry During Drop Jump After ACL Reconstruction: Implications for Rehabilitation Progression Open
Background: Biomechanical asymmetries after anterior cruciate ligament reconstruction (ACLR) may be amplified and perpetuated by progressing athletes to higher-demand tasks despite impairments in lower-demand tasks. Hypotheses: (1) Between…
View article: Conservative management of a 63-year-old athlete with a full-thickness tear of the second metatarsophalangeal plantar plate: A case report with 48 months follow-up
Conservative management of a 63-year-old athlete with a full-thickness tear of the second metatarsophalangeal plantar plate: A case report with 48 months follow-up Open
Plantar plate (PP) tears often necessitate surgical intervention to address concerns of progressive toe deformity and impaired function, particularly in the case of full-thickness PP tears or when conservative treatment fails. There is cur…
View article: FEASIBILITY OF USING ASPEN BRACES TO IMPROVE POSTURE IN PISA SYNDROME ASSOCIATED WITH PARKINSON’S DISEASE: A CASE REPORT
FEASIBILITY OF USING ASPEN BRACES TO IMPROVE POSTURE IN PISA SYNDROME ASSOCIATED WITH PARKINSON’S DISEASE: A CASE REPORT Open
View article: Clodronate disodium does not produce measurable effects on bone metabolism in an exercising, juvenile, large animal model
Clodronate disodium does not produce measurable effects on bone metabolism in an exercising, juvenile, large animal model Open
Bisphosphonates are commonly used to treat and prevent bone loss, but their effects in active, juvenile populations are unknown. This study examined the effects of intramuscular clodronate disodium (CLO) on bone turnover, serum bone biomar…
View article: The effects of osteopathic manipulative treatment on pain and disability in patients with chronic low back pain: a single-blinded randomized controlled trial
The effects of osteopathic manipulative treatment on pain and disability in patients with chronic low back pain: a single-blinded randomized controlled trial Open
Context The evidence for the efficacy of osteopathic manipulative treatment (OMT) in the management of low back pain (LBP) is considered weak by systematic reviews, because it is generally based on low-quality studies. Consequently, there …
View article: Efficacy of Tourniquet Use in Total Knee Arthroplasty: A Retrospective Cohort Review
Efficacy of Tourniquet Use in Total Knee Arthroplasty: A Retrospective Cohort Review Open
View article: The Impact of Circular Exercise Diameter on Bone and Joint Health of Juvenile Animals
The Impact of Circular Exercise Diameter on Bone and Joint Health of Juvenile Animals Open
Circular exercise is used in many equestrian disciplines and this study aimed to determine if circle diameter impacts juvenile animal forelimb bone and joint health. On day 0, 24 calves at 9 weeks of age were assigned the following exercis…
View article: Inverse Lqr Reveals Distinct Strategies for Seated Balance Among Healthy Subjects
Inverse Lqr Reveals Distinct Strategies for Seated Balance Among Healthy Subjects Open
View article: Impact of Gait and Diameter during Circular Exercise on Front Hoof Area, Vertical Force, and Pressure in Mature Horses
Impact of Gait and Diameter during Circular Exercise on Front Hoof Area, Vertical Force, and Pressure in Mature Horses Open
Circular exercise can be used at varying gaits and diameters to exercise horses, with repeated use anecdotally relating to increased lameness. This work sought to characterize mean area, mean vertical force, and mean pressure of the front …
View article: The effects of osteopathic manipulative treatment on pain and disability in patients with chronic neck pain: A single‐blinded randomized controlled trial
The effects of osteopathic manipulative treatment on pain and disability in patients with chronic neck pain: A single‐blinded randomized controlled trial Open
Background Neck pain (NP) affects up to 70% of individuals at some point in their lives. Systematic reviews indicate that manual treatments can be moderately effective in the management of chronic, nonspecific NP. However, there is a pauci…
View article: Regularized Nonlinear Regression for Simultaneously Selecting and Estimating Key Model Parameters
Regularized Nonlinear Regression for Simultaneously Selecting and Estimating Key Model Parameters Open
In system identification, estimating parameters of a model using limited observations results in poor identifiability. To cope with this issue, we propose a new method to simultaneously select and estimate sensitive parameters as key model…
View article: CORR Insights®: Cervical Paraspinal Muscle Fatty Degeneration Is Not Associated with Muscle Cross-sectional Area: Qualitative Assessment Is Preferable for Cervical Sarcopenia
CORR Insights®: Cervical Paraspinal Muscle Fatty Degeneration Is Not Associated with Muscle Cross-sectional Area: Qualitative Assessment Is Preferable for Cervical Sarcopenia Open
Where Are We Now? Spine surgeons generally treat symptomatic cervical spine conditions like radiculopathy and myelopathy with anterior cervical discectomy and fusion (ACDF). Approximately 150,000 ACDF procedures are performed annually, and…
View article: Patient Demographics and Anthropometric Measurements Predict Tibial and Femoral Component Sizing in Total Knee Arthroplasty
Patient Demographics and Anthropometric Measurements Predict Tibial and Femoral Component Sizing in Total Knee Arthroplasty Open
Our novel templating model may improve operative efficiency for a single TKA system. Our findings have a high concordance with a widely available electronic application used to predict implant sizes for a variety of TKA systems.
View article: Quantifying trunk neuromuscular control using seated balancing and stability threshold
Quantifying trunk neuromuscular control using seated balancing and stability threshold Open
View article: Corrigendum to ‘Development of a collaborative model of low back pain: report from the 2017 NASS consensus meeting’ [The Spine Journal 19 (2019)1029–1040]
Corrigendum to ‘Development of a collaborative model of low back pain: report from the 2017 NASS consensus meeting’ [The Spine Journal 19 (2019)1029–1040] Open
View article: Model Simulations Challenge Reductionist Research Approaches to Studying Chronic Low Back Pain
Model Simulations Challenge Reductionist Research Approaches to Studying Chronic Low Back Pain Open
Background Traditionally, low back pain (LBP) is studied using a reductionist approach, in which the factors contributing to the clinical presentation of LBP are studied in isolation to identify the primary pathology or condition linked to…
View article: Can Biomechanics Research Lead to More Effective Treatment of Low Back Pain? A Point-Counterpoint Debate
Can Biomechanics Research Lead to More Effective Treatment of Low Back Pain? A Point-Counterpoint Debate Open
Synopsis Although biomechanics plays a role in the development and perhaps the persistent or recurrent nature of low back pain (LBP), whether biomechanics alone can provide the basis for intervention is debated. Biomechanics, which refers …
View article: Feasibility of Incorporating Test-Retest Reliability and Model Diversity in Identification of Key Neuromuscular Pathways During Head Position Tracking
Feasibility of Incorporating Test-Retest Reliability and Model Diversity in Identification of Key Neuromuscular Pathways During Head Position Tracking Open
To study the complex neuromuscular control pathways in human movement, biomechanical parametric models and system identification methods are employed. Although test-retest reliability is widely used to validate the outcomes of motor contro…
View article: Inferring Control Intent During Seated Balance Using Inverse Model Predictive Control
Inferring Control Intent During Seated Balance Using Inverse Model Predictive Control Open
Patients with Low Back Pain (LBP) are suggested to follow a protective coping strategy. Therefore, rehabilitation of these patients requires estimating their motor control strategies (the control intent). In this letter, we present an appr…
View article: Selecting Sensitive Parameter Subsets in Dynamical Models With Application to Biomechanical System Identification
Selecting Sensitive Parameter Subsets in Dynamical Models With Application to Biomechanical System Identification Open
Estimating many parameters of biomechanical systems with limited data may achieve good fit but may also increase 95% confidence intervals in parameter estimates. This results in poor identifiability in the estimation problem. Therefore, we…
View article: Reliability of assessing postural control during seated balancing using a physical human-robot interaction
Reliability of assessing postural control during seated balancing using a physical human-robot interaction Open
View article: Degenerative Spondylolisthesis Is Related to Multiparity and Hysterectomies in Older Women
Degenerative Spondylolisthesis Is Related to Multiparity and Hysterectomies in Older Women Open
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