With a pyroantimonate precipitation technique, we have demonstrated Ca2+ in the sacs of the dendritic spine apparatus in the SER of dendrites and axon terminals, in synaptic vesicles, multivesicular bodies, mitochondria, and glial processes of the dentate molecular layer. It is speculated that the spine apparatus may be a Ca2+ sequestering organelle which may regulate levels of intraspinal and intradendritic Ca2+ during synaptic activity.
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http://dx.doi.org/10.1016/0006-8993(83)91322-7 | DOI Listing |
J Neurol Surg B Skull Base
February 2025
Department of Neurosurgery, All India Institute of Medical Sciences, Jodhpur, Rajasthan, India.
Instrumentation of C2 vertebra is considered the most difficult for young neurosurgeons and trainees due to its complex anatomical structures, variety of surgical approaches and techniques, and proximity to important neurovascular structures. Key points from a surgical perspective for midline posterior approach is described in the era of neuroradiological advancements. Computed tomography angiographies (CTAs) of a total of 92 patients were evaluated with special attention to the key findings for insertion of screws for craniovertebral junction (CVJ) fixations.
View Article and Find Full Text PDFJ Pediatr Orthop
January 2025
Department of Orthopaedics, Division of Pediatrics and Adolescent Orthopaedic Surgery and Division of Spine Surgery, Washington University School of Medicine, St. Louis, MO.
Introduction: Since the development of pedicle screw fixation in the spine, safe placement has remained a crucial component in maximizing patient outcomes and mitigating pedicle screw-related complications. The purpose of this study is to investigate the utility of pedicle tapping in identifying pedicle breaches.
Methods: A pediatric spine surgery database was queried to identify a consecutive series of patients who underwent spinal deformity surgery utilizing pedicle screw fixation between May 2019 and October 2022.
Ergonomics
January 2025
School of Kinesiology and Health Studies, Queen's University, Kingston, Ontario, Canada.
Age is associated with increased tissue stiffness and a higher risk of low back pain, particularly in older, sedentary workers who spend long periods sitting. This study explored how trunk stiffness changes with age and its relationship with posture during prolonged sitting in a sample of 37 women aged 20-65 years. Age was assessed as both Chronological Age and Fitness Age, with trunk stiffness measured using a passive trunk flexion apparatus.
View Article and Find Full Text PDFJ Orthop Traumatol
January 2025
Department of Orthopaedic Surgery, Zhongshan Hospital, Fudan University, 180 Fenglin Road, Shanghai, 200032, China.
Background: The need for anterior cervical discectomy and fusion (ACDF) for cervical degenerative disc disease (CDDD) will probably grow dramatically in the geriatric population. However, ACDF with self-locking standalone cages in patients over 80 years has not yet been investigated. This study aimed to assess the clinical and radiographic results in patients over 80 years treated by ACDF with self-locking standalone cages.
View Article and Find Full Text PDFSpine Deform
January 2025
Department of Orthopedic Surgery, Children's Mercy Kansas City, Kansas City, Missouri, USA.
Purpose: Scoliosis is a complex multi-dimensional deformity of the spine that is common in children and adults. Of the various treatments for scoliosis, one is posterior spinal fusion with instrumentation. The rods typically used are composed of titanium or cobalt-chrome.
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