AI Article Synopsis
- This study investigates ultrasonography's role in measuring the cross-sectional area (CSA) of transferred muscles and assessing their strength recovery post-surgery.
- Ten patients with complete brachial plexus avulsion underwent double free muscle transfer and were observed for over 1.5 years.
- Results indicated that muscles reinnervated by the spinal accessory nerve (SAN) showed significantly better force recovery compared to those reinnervated by the intercostal nerve (ICN), highlighting the effectiveness of ultrasonography in evaluating muscle recovery.
Article Abstract
This study focuses on the application of ultrasonography as a means of measuring the cross-sectional area (CSA) of the transferred muscle and evaluating its force recovery following functioning free muscle transfer. The objective of the study was to compare the CSA of a transferred muscle that is either reinnervated by the spinal accessory nerve (SAN) or the intercostal nerve (ICN), and to evaluate the difference in their force recovery. Ten patients with complete avulsion of the brachial plexus who underwent a double free muscle technique for restoring prehensile function were evaluated. All patients were followed up for at least 1.5 years after the operation. The CSAs of 20 transferred gracilis muscles in 10 patients, reinnervated either by SAN or ICN, were measured by ultrasonography. The CSA was measured at relaxation and at maximal isometric contraction. The force recovery of each muscle was expressed as the contraction rate (CR), calculated by dividing the CSA of the muscle in maximum isometric contraction by the CSA of the muscle in relaxation. The mean CSA of the transferred muscles reinnervated by the SAN was 2.98 +/- 0.723 cm (2) in relaxation and 3.95 +/- 1.296 cm (2) in maximum isometric contraction; thereby a CR of 1.32 +/- 0.174 was obtained. The mean CSA of the transferred muscles reinnervated by the ICN was 2.32 +/- 0.520 cm (2) and 2.69 +/- 0.566 cm (2) in relaxation and maximal isometric contraction, respectively; thus a CR of 1.16 +/- 0.068 was obtained. Results showed that the CR was significantly higher among the transferred muscles reinnervated by the SAN than those by the ICN. This study demonstrated that muscles that are reinnervated by the SAN resulted in stronger recovery than those reinnervated by the ICN, and that ultrasonography has the capacity to evaluate force recovery of each muscle by measuring the CSA during the two phases of muscle activity.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1055/s-2006-947696 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Implementation of a goal-directed Care Bundle for intracerebral hemorrhage: Results of embedded process evaluation in the INTERACT3 trial.
PLOS Glob Public Health
December 2024
The George Institute for Global Health, Faculty of Medicine, University of New South Wales, Sydney, Australia.
The third, stepped-wedge, cluster-randomized, Intensive Care Bundle with Blood Pressure Reduction in Acute Cerebral Hemorrhage Trial (INTERACT3), has shown that a goal-directed multi-faceted Care Bundle incorporating protocols for the management of physiological variables was safe and effective for improving functional recovery in a broad range of patients with acute intracerebral hemorrhage (ICH). The INTERACT3 Care Bundle included time- and target-based protocols for the management of early intensive lowering of systolic blood pressure (SBP, target <140mmHg), glucose control (target 6.1-7.
View Article and Find Full Text PDFExploring graphene's impact on graphite/PANI matrix composites: high-pressure fabrication and enhanced thermal-electrical properties.
Nanoscale
December 2024
Department of Nanoscience and Nanotechnology, Ondokuz Mayis University, Samsun, 55139, Atakum, Turkey.
This study investigates the effects of the graphene content and applied pressure on the electrical and thermal conductivities of graphite/polyaniline (GP) and graphite/graphene/polyaniline (GGP) composites produced direct mixing method. Based on the electrical and thermal conductivity results, 14 wt% graphene content was found to be the crucial threshold, beyond which extra graphene additions exhibited different behaviors in pressed and unpressed samples. While the electrical conductivity of the unpressed samples increased up to 14 wt% graphene addition, the thermal conductivity increased further after 14 wt% graphene addition.
View Article and Find Full Text PDFMicrostructural Damage and Repair in the Spinal Cord of Patients With Early Multiple Sclerosis and Association With Disability at 5 Years.
Neurol Neuroimmunol Neuroinflamm
January 2025
From the Department of Neuroradiology (M.G., E.B., J.-C.F.), Rennes University Hospital; Empenn (M.G., B.C., E.B., A.M., V.C., G.B., J.-C.F., A.K.), INRIA, Rennes University-CNRS-INSERM; Department of Neurology (L.M., E.L.P., G.E., A.K.), Rennes University Hospital; Paris Brain Institute (ICM) (B.S., B.B.), Sorbonne University-CNRS-INSERM; and Neurology Department (B.S., B.B.), APHP St Antoine Hospital, Paris, France.
Background And Objectives: The dynamics of microstructural spinal cord (SC) damage and repair in people with multiple sclerosis (pwMS) and their clinical relevance have yet to be explored. We set out to describe patient-specific profiles of microstructural SC damage and change during the first year after MS diagnosis and to investigate their associations with disability and SC atrophy at 5 years.
Methods: We performed a longitudinal monocentric cohort study among patients with relapsing-remitting MS: first relapse <1 year, no relapse <1 month, and high initial severity on MRI (>9 T2 lesions on brain MRI and/or initial myelitis).
Reproducibility of 3D chemical exchange saturation transfer (CEST) contrasts in the healthy brain at 3T.
Sci Rep
October 2024
Department of Medical Biophysics, Schulich School of Medicine & Dentistry, Western University, London, ON, Canada.
Chemical exchange saturation transfer (CEST) imaging may provide novel contrast for the diagnosis, prognosis, and monitoring of the progression or treatment of neurological applications. However, the reproducibility of prominent CEST contrasts like amide CEST and nuclear Overhauser enhancement (NOE) CEST must be characterized in healthy brain gray matter (GM) and white matter (GM) prior to clinical implementation. The objective of this study was to characterize the reproducibility of four different CEST contrasts in the healthy human brain.
View Article and Find Full Text PDFThermal Bending Simulation and Experimental Study of 3D Ultra-Thin Glass Components for Smartwatches.
Micromachines (Basel)
October 2024
Henan Key Laboratory of Intelligent Manufacturing of Mechanical Equipment, Zhengzhou University of Light Industry, Zhengzhou 450002, China.
The heating system is an essential component of the glass molding process. It is responsible for heating the glass to an appropriate temperature, allowing it to soften and be easily molded. However, the energy consumption of the heating system becomes particularly significant in large-scale production.
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!