Poster 63: Dose-Related Response to Ultrasound-Guided Ulnar In-plane Median Nerve Steroid Injections for Carpal Tunnel Syndrome
Ian Dworkin: I Have No Relevant Financial Relationships To Disclose
This work discusses challenges we have encountered in acquiring reproducible measurements of shear wave speed (SWS) in the median nerve and suggests methods for improving reproducibility. First, procedural acquisition challenges are described, including nerve echogenicity, transducer pressure and transmit focal depth. Second, we present an iterative, radon sum –based algorithm that was developed specifically for measuring the SWS in median nerves. SWSs were measured using single track location shear wave elasticity imaging (SWEI) in the median nerves of six healthy volunteers and six patients diagnosed with carpal tunnel syndrome.
CONCLUSION: Mean FTE/MNE ratio may be a useful sonographic parameter for CTS. PMID: 31989885 [PubMed - in process]
ConclusionArterioles can be seen in the safe zone both superficial and deep to the flexor retinaculum. Deep to the retinaculum, they are mainly observed in the proximal aspect of the carpal tunnel and more frequently close to the median nerve.Key Points• Superb microvascular imaging (SMI) enables the visualization of arterioles within the “safe zone” of the carpal tunnel (visible both superficial and deep to the flexor retinaculum).• Arterioles were more frequently observed in the proximal aspect of the carpal tunnel.• Deep to the retinaculum, arterioles were more frequently seen in proximity to the median nerve.
This study aimed to characterize forearm mixed nerve conduction study (NCS) findings in carpal tunnel syndrome (CTS). Eighty-two patients with CTS and 48 healthy controls were enrolled. We directly compared the forearm mixed NCS and ultrasonography results from CTS patients with those from the controls. Correlation analyses were performed to identify the relationship between forearm mixed NCS parameters and ultrasound measurements in CTS. We observed reduced forearm mixed nerve amplitude and increased cross-sectional area (CSA) of the median nerve at the proximal carpal tunnel (CT) inlet in CTS. The forearm mixed nerve amp...
Carpal tunnel syndrome (CTS) is the commonest entrapment neuropathy. The aim of this study was to assess the accuracy and validity of high resolution musculoskeletal ultrasound (US) in the diagnosis of CTS in ...
Conditions: Chronic Pain; Carpal Tunnel Syndrome Interventions: Device: transcranial Direct Current Stimulation (tDCS); Device: Transcranial Ultrasound (TUS) Sponsors: Spaulding Rehabilitation Hospital; Highland Instruments, Inc. Not yet recruiting