Article
Clinical Neurology
Jeanette Henkelmann, Dina Wiersbicki, Hanno Steinke, Timm Denecke, Christoph-Eckhard Heyde, Anna Voelker
Summary: In this study, the detectability of lumbar intraforaminal ligaments (IFL) using high spatial resolution MRI was investigated in vivo in adult patients. The results showed successful detection of lumbar IFLs in every patient, with good interrater reliability. This study provides a starting point for further clinical research on the potential impact of altered IFLs on radicular pain.
EUROPEAN SPINE JOURNAL
(2022)
Article
Biophysics
Pierre-Hugo Minster, Yoann Lafon, Philippe Beillas
Summary: Finite element models of the lumbar spine often neglect differences between testing and in situ initial ligament length. This study proposes a numerical methodology to identify ranges of ligament laxities or preloads compatible with the selected tensile ligament properties and the range of motion (RoM) the model aims to simulate.
JOURNAL OF BIOMECHANICS
(2023)
Article
Engineering, Biomedical
Luis Fernando Nicolini, Agnes Beckmann, Markus Laubach, Frank Hildebrand, Philipp Kobbe, Carlos Rodrigo de Mello Roesler, Eduardo Alberto Fancello, Bernd Markert, Marcus Stoffel
Summary: We propose a systematic and automated method to calibrate computational models of the spine. By conducting a sequential resection study, we determine the individual contribution of the intervertebral discs, facet joints, and ligaments to the kinematics of the spine. Using a Genetic Algorithm, we calibrate the properties of the discs and facet joints, and develop a simple technique to calibrate each ligament. The calibrated model can accurately reproduce experimental results.
MEDICAL ENGINEERING & PHYSICS
(2022)
Article
Clinical Neurology
Frederic Cornaz, Jonas Widmer, Nadja A. Farshad-Amacker, Jose Miguel Spirig, Jess G. Snedeker, Mazda Farshad
Summary: Aging is primarily related to biomechanical changes to the LF, while IVD-degeneration is related to a significant reduction in stiffness and ultimate strength of the LF and ISL&SSL. The ISL-specific grading system provides minimal biomechanical information, and LF-thickness does not provide biomechanical information.
Article
Radiology, Nuclear Medicine & Medical Imaging
Bieke De Roo, Klaus Bacher, Koenraad Verstraete
Summary: The study investigated the number and type of imaging techniques, cumulative radiation exposure, and radiation-induced cancer risk in patients with cervical and lumbar spine injuries after traffic or occupational accidents. MRI was the most used imaging technique, with no patient exceeding a cumulative effective dose of 100 mSv from repeated imaging procedures. Nineteen patients fell into the 'moderate risk' group for developing radiation-induced cancer.
EUROPEAN JOURNAL OF RADIOLOGY
(2022)
Article
Clinical Neurology
Jonas M. Getzmann, Hamidreza Ashouri, Jakob M. Burgstaller, Fabio Valeri, Sebastian Winklhofer, Nils H. Ulrich, Roman Guggenberger
Summary: This study found that paraspinal fatty muscle infiltration (FMI) and cumulative lumbar spine degeneration have an influence on long-term clinical outcomes in patients with lumbar spinal canal stenosis (LSCS). Total lumbar spine degeneration is not associated with clinical symptoms, while FMI is associated with lower function and quality of life in LSCS patients.
Article
Multidisciplinary Sciences
Hua-Dong Zheng, Yue-Li Sun, De-Wei Kong, Meng-Chen Yin, Jiang Chen, Yong-Peng Lin, Xue-Feng Ma, Hong-Shen Wang, Guang-Jie Yuan, Min Yao, Xue-Jun Cui, Ying-Zhong Tian, Yong-Jun Wang
Summary: Low back pain has been a leading cause of disability worldwide. This study proposes a segmentation network and a quantitative method for evaluating lumbar intervertebral disc degeneration. The technique can accurately assess the severity of low back pain and provide more precise information.
NATURE COMMUNICATIONS
(2022)
Article
Biotechnology & Applied Microbiology
L. Pachocki, K. Daszkiewicz, P. Luczkiewicz, W. Witkowski
Summary: This study utilized finite element method to conduct numerical simulations, finding that lumbar spine fractures could occur during vehicle collisions with concrete road safety barriers, primarily affecting the L1-L3 lumbar spine section. The fractures were caused by a combination of axial forces and flexion bending moments.
FRONTIERS IN BIOENGINEERING AND BIOTECHNOLOGY
(2021)
Article
Biophysics
Samuel Haupt, Frederic Cornaz, Anna L. Falkowski, Mazda Farshad, Jonas Widmer
Summary: In the flexed end-of-range position, the trunk is passively stabilized. This study investigates the effect of posterior surgical interventions on local and distant spinal regions.
JOURNAL OF BIOMECHANICS
(2023)
Article
Rehabilitation
Prakash Jayabalan, Rachel Bergman, Kevin Huang, Matthew Maas, Leah Welty
Summary: This study examined the relationship between socioeconomic status and pain reduction in patients with lumbar radiculopathy who underwent epidural steroid injections. The results showed that lower socioeconomic status was associated with greater pain reduction after the injection. Additionally, smoking and engaging in structured physical activity were also related to pain levels.
AMERICAN JOURNAL OF PHYSICAL MEDICINE & REHABILITATION
(2023)
Article
Multidisciplinary Sciences
Elisabeth Sartoretti, Michael Wyss, Alex Alfieri, Christoph A. Binkert, Cyril Erne, Sabine Sartoretti-Schefer, Thomas Sartoretti
Summary: This study developed and evaluated the reproducibility of an updated 6-point grading system for lumbar foraminal stenosis based on high-resolution MRI images. The system accurately describes the condition and showed good interreader agreement.
SCIENTIFIC REPORTS
(2021)
Article
Sport Sciences
Molly Connolly, Kane Middleton, Graeme Spence, Olivia Cant, Machar Reid
Summary: This study compared the kinematics of the pelvis and ball toss in elite adolescent male and female tennis players with and without lumbar spine abnormalities during flat and kick serves. The results showed that gender and serve type can impact the pelvis and ball toss kinematics, while lumbar spine abnormalities did not necessarily affect the kinematics. Additionally, the order and timing of key serve events may help identify players at risk of lumbar spine abnormalities.
SPORTS MEDICINE-OPEN
(2021)
Article
Radiology, Nuclear Medicine & Medical Imaging
Andrew Kanawati, Renan Jose Rodrigues Fernandes, Aaron Gee, Jennifer Urquhart, Fawaz Siddiqi, Kevin Gurr, Chris Bailey, Parham Rasoulinejad
Summary: This study compares human lumbar vertebrae, 3D scans, CT models, and 3D-printed models, revealing no statistical difference in manual measurements between model types, but some differences in size and volume. The segmentation metrics show a 1 mm difference and 4.3 ml volumetric difference between the 3D-scanned bone and CT measurements.
ACADEMIC RADIOLOGY
(2021)
Article
Medicine, General & Internal
Ralph Laeubli, Robin Brugger, Tatiana Pirvu, Sven Hoppe, Dominik Sieron, Karol Szyluk, Christoph E. Albers, Andreas Christe
Summary: This study found that the presence of disproportionate motion segments in the lower spine may lead to a significantly higher risk for disc herniation in patients undergoing discectomy.
JOURNAL OF CLINICAL MEDICINE
(2021)
Article
Radiology, Nuclear Medicine & Medical Imaging
Luca Proietti, Andrea Perna, Luca Ricciardi, Caterina Fumo, Domenico Alessandro Santagada, Ilaria Giannelli, Francesco Ciro Tamburrelli, Antonio Leone
Summary: This study found that after LLIF, most patients achieved intervertebral bone bridge fusion, but the ankylotic degeneration of the zygapophyseal joints in the posterior region is also an important pathological feature. The overlap rate between anterior and posterior fusion segments was relatively high, but a significant number of patients did not achieve any type of fusion.