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Risk of neurologic deficit in medially breached pedicle screws assessed by computed tomography: a systematic review.
Asian Spine J
December 2024
Department of Radiology, Dr. Cipto Mangunkusumo National Central Public Hospital, Faculty of Medicine Universitas Indonesia, Jakarta, Indonesia.
Pedicle screws are commonly used for vertebral instrumentation, and a postoperative computed tomography (CT) scan is used to evaluate their position within the pedicle. Medial pedicle screw breaching occurs in 20%-40% of cases. This study investigated the correlation between radiographically evident medial breaching and the incidence of nerve injury, shedding light on the clinical implications.
View Article and Find Full Text PDFThis case report describes a unique presentation of May-Thurner syndrome (MTS) in a 28-year-old woman, characterized by the congenital bifurcation of the left common iliac vein (LCIV) into the outer (OLCIV) and inner (ILCIV) segments. Both veins experienced significant compression - OLCIV proximally and ILCIV medially - due to the overlying right common iliac artery (RCIA) and lumbar spine. The patient presented with bilateral spider veins, lower extremity swelling, pelvic discomfort, and bilateral leg cramping.
View Article and Find Full Text PDFLumbar Facet Joint Radiofrequency Ablation With a 3-Tined Cannula: A Technical Report and Observational Study.
Pain Res Manag
December 2024
Faculty of Biomedical Sciences, Università della Svizzera Italiana, Lugano, Switzerland.
Lumbar facet joints are the source of pain in 15%-41% of individuals experiencing low back pain (LBP). Conventional lumbar facet radiofrequency ablation (RFA) has Level II evidence for improving pain and function. The best proven technique, the parallel technique, is technically challenging, time-consuming, and often uncomfortable for the patient.
View Article and Find Full Text PDFDifferential effects of stimulation waveform and intensity on the neural structures activated by lumbar transcutaneous spinal cord stimulation.
J Neurophysiol
December 2024
Spinal Cord Injury Research Centre, Neuroscience Research Australia, Randwick, 2031 NSW, Australia.
Introduction: Lumbar transcutaneous spinal cord stimulation (TSS) evokes synchronized muscle responses, termed spinally evoked motor response (sEMR). Whether the structures TSS activates to evoke sEMRs differ when TSS intensity and waveform are varied is unknown.
Methods: In 15 participants (9F:6M), sEMRs were evoked by TSS over L1-L3 (at sEMR threshold and suprathreshold intensities) using conventional (one 400-µs biphasic pulse) or high-frequency burst (ten 40-µs biphasic pulses at 10 kHz) stimulus waveforms in vastus medialis (VM), tibialis anterior (TA) and medial gastrocnemius (MG) muscles.
Data-driven CSF biomarker profiling: imaging and clinical outcomes in a cohort at risk of Alzheimer's disease.
Alzheimers Res Ther
December 2024
University of Pompeu Fabra (UPF), Barcelona, Spain.
Background: Cerebrospinal fluid (CSF) biomarkers of synaptic dysfunction, neuroinflammation, and glial response, complementing Alzheimer's disease (AD) core biomarkers, have improved the pathophysiological characterization of the disease. Here, we tested the hypothesis that the co-expression of multiple CSF biomarkers will help the identification of AD-like phenotypes when biomarker positivity thresholds are not met yet.
Methods: Two hundred and seventy cognitively unimpaired adults with family history (FH) of sporadic AD (mean age = 60.
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