Background: The morphology and internal composition, particularly the nucleus-to-cross sectional area (NP-to-CSA) ratio of the lumbar intervertebral discs (IVDs), is important information for finite element models (FEMs) of spinal loadings and biomechanical behaviors, and, yet, this has not been well investigated and reported.
Methods: Anonymized MRI scans were retrieved from a previously established database, including a total of 400 lumbar IVDs from 123 subjects (58 F and 65 M). Measurements were conducted manually by a spine surgeon and using two computer-assisted segmentation algorithms, i.e., fuzzy C-means (FCM) and region growing (RG). The respective results were compared. The influence of gender and spinal level was also investigated.
Results: Ratios derived from manual measurements and the two computer-assisted algorithms (FCM and RG) were 46%, 39%, and 38%, respectively. Ratios derived manually were significantly larger.
Conclusions: Computer-assisted methods provide reliable outcomes that are traditionally difficult for the manual measurement of internal composition. FEMs should consider the variability of NP-to-CSA ratios when studying the biomechanical behavior of the spine.
Download full-text PDF |
Source |
|---|---|
| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC11117579 | PMC |
| http://dx.doi.org/10.3390/bioengineering11050466 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Coccydynia Improved by Percutaneous Discectomy.
Cureus
November 2024
Anesthesiology, Showa University School of Medicine, Tokyo, JPN.
Usually, coccydynia cases are caused by herniated discs, with lower back pain and sciatica as initial symptoms. However, whether lumbar disc herniation causes coccydynia without back pain remains unclear. We report a case of lumbar disc herniation diagnosed as the underlying cause of coccydynia by discoblock.
View Article and Find Full Text PDFDimensions of bony Kambin's triangle pertaining to endoscopic procedure.
Med J Armed Forces India
December 2024
Senior Consultant (Neurology), NH MMI Superspeciality, Raipur, Chhattisgarh, India.
Background: Endoscopic procedures nowadays are successful, minimally invasive, and safer, with fewer intraoperative and postoperative complications and shorter hospital stays. Kambin's triangle (KT) is the three-dimensional configuration that is used as a transforaminal anatomical corridor for epidural steroid injections and endoscopic surgeries for various lumbar pathologies. This study aims to estimate the dimensions of KT and diameter of the cannula for the transforaminal surgical approaches using KT in the Chhattisgarh population.
View Article and Find Full Text PDFCT-3D MERGE fusion imaging improves image quality compared with CT and 3D MERGE in patients with lumbar disc herniation.
Front Neurol
December 2024
Department of Radiology, Qujing Second People's Hospital, Qujing, China.
Background: CT-routine MRI fusion imaging has recently become available to evaluate spinal anatomy before surgery. Due to the 3-5 mm slice thickness and non-isotropic of routine MRI sequence, the CT-routine MRI fusion imaging is not good. The MRI multiple recalled gradient echo (MERGE) sequence is potentially useful in diagnosis of lumbar degeneration disease due to the better nerve roots visualization, 1 mm slice thickness and its isotropy.
View Article and Find Full Text PDFEarly therapeutic efficacy of condoliase chemonucleolysis for lumbar disc herniation.
J Orthop Surg Res
December 2024
Department of Orthopaedic Surgery, Japan Red Cross Aichi Medical Center Nagoya Daini Hospital, Myokencho 2-9, Syowa-Ku, Nagoya, Aichi, 466-8650, Japan.
Background: Low back pain is often caused by lumbar disc herniation (LDH). Treatment of LDH is possible using chemonucleolysis of the nucleus pulposus with condoliase injection. However, onset of the therapeutic effect varies among patients, with improvement from an early stage to 3 months post-injection.
View Article and Find Full Text PDFImaging observation of intervertebral disc degeneration in patients with old thoracolumbar fracture-related kyphotic deformity.
Sci Rep
December 2024
Affiliated Fuyang People's Hospital of Anhui Medical University, Sanqing Road 501, Fuyang, 236000, Anhui, China.
Old thoracolumbar fracture with kyphosis (OTLFK) often results in low back pain, with intervertebral disc degeneration being a significant contributor. We hypothesized that patients with OTLFK exhibit distinct patterns of disc degeneration compared to those with chronic low back pain without kyphotic deformity. This study aimed to investigate the characteristics of disc degeneration in OTLFK patients and explore its association with sagittal spinal parameters and endplate injury.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!