High-resolution ultrasound visualization of the recurrent motor branch of the median nerve: normal and first pathological findings
| Autor: | Gerd Bodner, Suren Jengojan, Christopher Pivec, Georg Riegler, Martin Vierhapper, Peter Brugger, Hannes Platzgummer, Doris Lieba-Samal |
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| Přispěvatelé: | University of Zurich, Riegler, Georg |
| Jazyk: | angličtina |
| Rok vydání: | 2016 |
| Předmět: |
Adult
Male medicine.medical_specialty Median nerve 610 Medicine & health 030218 nuclear medicine & medical imaging 03 medical and health sciences Anatomical variation 0302 clinical medicine Recurrence Ultrasound Cadaver Medicine 2741 Radiology Nuclear Medicine and Imaging Humans Radiology Nuclear Medicine and imaging Prospective Studies Carpal tunnel syndrome Prospective cohort study Neuroradiology Ultrasonography medicine.diagnostic_test business.industry Interventional radiology General Medicine Middle Aged medicine.disease Hand Carpal Tunnel Syndrome Iatrogenic disease Healthy Volunteers 10040 Clinic for Neurology Dissection Radiology Nuclear Medicine and imaging Female Radiology business Cadaveric spasm 030217 neurology & neurosurgery |
| Zdroj: | European Radiology |
| ISSN: | 1432-1084 0938-7994 |
| Popis: | Purpose To evaluate in a prospective study the possibility of visualization and diagnostic assessment of the recurrent motor branch (RMB) of the median nerve with high-resolution ultrasound (HRUS). Materials and methods HRUS with high-frequency probes (18–22 MhZ) was used to locate the RMB in eight fresh cadaveric hands. To verify correct identification, ink-marking and consecutive dissection were performed. Measurement of the RMB maximum transverse-diameter, an evaluation of the origin from the median nerve and its course in relation to the transverse carpal ligament, was performed in both hands of ten healthy volunteers (n = 20). Cases referred for HRUS examinations for suspected RMB lesions were also assessed. Results The RMB was clearly visible in all anatomical specimens and all volunteers. Dissection confirmed HRUS findings in all anatomical specimens. Mean RMB diameter in volunteers was 0.7 mm ± 0.1 (range, 0.6–1). The RMB originated from the radial aspect in 11 (55%), central aspect in eight (40%) and ulnar aspect in one (5%) hand. Nineteen (95%) extraligamentous courses and one (5%) subligamentous course were detected. Three patients with visible RMB abnormalities on HRUS were identified. Conclusion HRUS is able to reliably visualize the RMB, its variations and pathologies. Key Points • Ultrasound allows visualization of the recurrent motor branch of the median nerve. • Ultrasound may help clinicians to assess patients with recurrent motor branch pathologies. • Patient management may become more appropriate and targeted therapy could be improved. Electronic supplementary material The online version of this article (doi:10.1007/s00330-016-4671-1) contains supplementary material, which is available to authorized users. |
| Databáze: | OpenAIRE |
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