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Spinopelvic malalignment correlates to lumbar instability and lumbar musculature in chronic low back pain-an exploratory study.
Sci Rep
December 2024
Department of Orthopaedic Surgery, Harvard Medical School, Boston, MA, USA.
As PI-LL mismatch is an effective index for spinal surgery and PI-LL less than 10 probably indicates better quality of life, this study aimed to assess spinopelvic parameters, lumbar instability, and lumbar muscle morphology in patients with chronic low back pain (CLBP) with different PI-LL mismatches. This cross-sectional study included 158 CLBP patients. The association between lumbar extensor muscle morphology (measured from magnetic resonance imaging) and spinopelvic parameters (measured from standing lateral radiographs) and lumbar instability (measured from lumbar flexion/extension radiographs) was compared between two groups of patients with different PI-LL mismatch.
View Article and Find Full Text PDFEfficient development of subject-specific finite element knee models: Automated identification of soft-tissue attachments.
J Biomech
January 2025
Mechanical and Biomedical Engineering, Boise State University, Boise, ID, United States. Electronic address:
Article Synopsis
- Musculoskeletal disorders significantly affect quality of life and lead to high economic costs, with traditional research methods facing limitations due to invasiveness.
- This study presents a fully automated algorithm that quickly identifies soft-tissue attachment sites using MRI, streamlining the process of creating personalized finite element (FE) knee models.
- The automated method showed consistent results with manual identification in terms of kinematic and mechanical outputs, drastically cutting processing time and paving the way for more extensive and reproducible biomechanical studies.
High intensity in interspinous ligaments: a diagnostic sign of lumbar instability and back pain for degenerative lumbar spondylolisthesis.
BMC Musculoskelet Disord
November 2024
Department of Orthopedics, Huangshan City People's Hospital, Huangshan, Anhui, China.
Article Synopsis
- The study aimed to analyze the significance of high-intensity signals in interspinous ligaments in patients with degenerative lumbar spondylolisthesis (DLS) and to identify the best diagnostic methods for assessing segmental instability.
- A total of 73 patients were assessed, divided into two groups based on the presence of high-intensity signals, with Group H showing more functional impairment and longer 5-repetition sit-to-stand test times compared to Group NH.
- The results indicated that instability was more prevalent in Group H (77.3%) compared to Group NH (37.3%), suggesting that high-intensity signals correlate with more severe segmental instability in DLS.
Sensitivity analysis of an inertial calibration method: Influence of leg position on 3D knee kinematics.
Gait Posture
January 2025
Laboratoire d'Innovation Ouverte en technologies de la santé (LIO-ÉTS), Centre de Recherche du Centre Hospitalier de l'université de Montréal (CRCHUM), 900 St-Denis, Montréal, QC H2X 0A9, Canada; École de Technologie Supérieure, Département de génie des systèmes, 1100 rue Notre-Dame Ouest, Montréal, QC H21 2W5, Canada. Electronic address:
Background: Inertial systems are increasingly used to analyze human motion, especially for gait analyses and in clinical settings. Calibration methods for these systems are designed for ease of implementation, and previous studies have shown that they can provide accurate knee kinematics in the sagittal plane. However, the reason of their lack of accuracy in the other planes (i.
View Article and Find Full Text PDFArticle Synopsis
- Athletes at risk for ACL injuries often have issues with visual cognitive function and brain connectivity related to motor skills.
- This study tested a training method called visual perturbation neuromuscular training (VPNT) to see if it could enhance physical and cognitive demands, improve landing safety, and decrease neural activity for knee control.
- Results showed that VPNT led to better landing mechanics and reduced brain activity in key areas, suggesting it can effectively improve athletic performance and may pave the way for more thorough studies in the future.
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