case_images: PMC10860705_01
case_images: Preoperative physical examination showed the strength of the left flexor pollicis longus and index flexor digitorum profundus was MRC 2, with mild hyperesthesia in 1-4 digits.
case_images: fneur-15-1306264-g001.jpg
case_images: PMC10860705_01_fneur-15-1306264-g001.jpg
case_images: fig1
case_images: Physical examination showed a severe paresis of the left flexor pollicis longus and index flexor digitorum profundus muscles (strength 2 on the Medical Research Council (MRC) scale), a moderate paresis for the middle flexor digitorum profundus (MRC 3), biceps brachii, flexor carpi radialis, and abductor pollicis brevis muscles (MRC 3-4), with mild hypesthesia first three fingers and the radial half of the ring finger (Figure 1).
case_images: The longitudinal ultrasound image shows multiple HLCs of AIN (arrow).
case_images: fneur-15-1306264-g002.jpg
case_images: PMC10860705_01_fneur-15-1306264-g002.jpg
case_images: fig2
case_images: Ultrasound examination of the median nerve showed nerve bundle swelling and multiple HLCs of left upper arm (Figure 2).
case_images: Multiple HLCs had been observed in the affected AIN during the operation (arrow).
case_images: fneur-15-1306264-g003.jpg
case_images: PMC10860705_01_fneur-15-1306264-g003.jpg
case_images: fig3
case_images: One of the fascicles showed 4 HLCs and other fascicles showed 3 HLCs (Figure 3). During surgery, a total of 7 HLCs were found at 10.5, 9.5, 9.0, 6.0, 2.0, 1.5 and 0 cm proximal to the medial epicondyle (Figure 3) in her AIN bundle and without any visible source of external compression.