Role of Ultrasonography and color Doppler in Evaluation of Carpel tunnel Syndrome

Abstract

Background:Carpal tunnel syndrome (CTS) is the most common entrapment neuropathy, as compression of the median nerve in the carpal tunnel under the flexor retinaculum; it is more frequent in middle aged women and mostly occurs bilateral. Objectives:Prospective case control study of Evaluation of ultrasound and color Doppler accuracy in diagnosis of carpel tunnel syndrome. Patients and methods: Prospective –case control clinical study was conducted during the time period from august 2019 to June 2020. Thirty subjects were included in the study (60 wrists) 20 were females and 10 males. They were referred to the radiology department at south valley university hospital from orthopaedic and rheumatology departments of south valley university hospital for ultrasound examination of the carpal tunnel after taking oral consent. Results: Out of 30 wrists with CTS, 5 (16.7%) of them had detected intraneural abnormal hypervasculature in Color duplex and power duplex of median nerve. In case of control group, only one wrist had detected intraneural abnormal hypervasculature in color and power duplex of median nerve. The significant cut off value for CSA of the median nerve in ultrasound (p-value 9mm2 with a sensitivity of93%,specificity32%and at quadratus level is >8mm2 with sensitivity84.31%, specificity78.5%. Conclusion: From all above discussed results we will establish and recommend a scheme for diagnosis of CTS based on ultrasound. Lastly this study used US with Doppler study to diagnose CTS ,US is easy ,rapid ,less costly and more comfortable method to patients suspected CTS and so it can be preliminary in diagnosis of CTS and grading..