Gattu Abhinay Kumar, Reddy Y Muralidhar, Murthy J M K, Kiran Ess, Pidaparthi Lalitha, Jaiswal Shyam Krishnakumar, Pennuru Anusha, Nulaka Ravi, Kumar Sudhir
Department of Neurology, CARE Institute of Neurological Sciences, CARE Hospital, Hyderabad, Banjara Hills, Telangana, India.
J Med Ultrasound. 2024 Jul 10;33(1):41-46. doi: 10.4103/jmu.jmu_152_23. eCollection 2025 Jan-Mar.
Ultrasound (US) can identify morphologic abnormalities and aid in the accurate localization of peripheral nerves. It can identify the femoral nerve and improve the stimulator placement in the femoral nerve motor conduction study. We aimed to compare the conventional and US-assisted femoral motor conduction techniques in a healthy population.
One hundred and sixty-eight healthy controls (336 nerves) aged 18 years or more and both sexes were enrolled. Height, weight, body mass index (BMI), waist circumference (WC), and waist-hip ratio (WHR) were recorded. Stimulation of the femoral nerve was first done blindly (conventional) at the inguinal ligament and later at the site of the nerve identified using the US. Recording was done from the rectus femoris muscle. The mean and fifth percentiles of the compound muscle action potential (CMAP) obtained by both techniques were compared.
Mean (standard deviation) age of the cohort was 45.5 ± 14.01 years. US-assisted technique recorded larger CMAP than conventional in all age groups, gender, World Health Organization and Asia-Pacific BMI categories, WC, and WHR categories ( < 0.01). The fifth percentile of the CMAP amplitude was also higher in the US-assisted technique.
Our results indicate that a US-assisted setup could improve conventional femoral nerve conduction studies.
超声（US）能够识别形态学异常，并有助于外周神经的精确定位。它可以识别股神经，并在股神经运动传导研究中改善刺激器的放置位置。我们旨在比较健康人群中传统的和超声辅助的股神经运动传导技术。
纳入168名18岁及以上的健康对照者（336条神经），男女不限。记录身高、体重、体重指数（BMI）、腰围（WC）和腰臀比（WHR）。首先在腹股沟韧带处盲目（传统方法）刺激股神经，随后在使用超声识别出的神经部位进行刺激。记录股直肌的肌电信号。比较两种技术获得的复合肌肉动作电位（CMAP）的平均值和第五百分位数。
该队列的平均（标准差）年龄为45.5±14.01岁。在所有年龄组、性别、世界卫生组织和亚太地区BMI类别、WC和WHR类别中，超声辅助技术记录的CMAP均大于传统技术（<0.01）。超声辅助技术中CMAP波幅的第五百分位数也更高。
我们的结果表明，超声辅助设置可以改善传统的股神经传导研究。
