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Median Nerve Shear Wave Elastography Is Associated With the Neurophysiological Severity of Carpal Tunnel Syndrome.
Martikkala, Lauri; Pemmari, Antti; Himanen, Sari-Leena; Mäkelä, Katri.
Afiliación
  • Martikkala L; Faculty of Medicine and Health Technology, Tampere University, Tampere, Finland.
  • Pemmari A; Faculty of Medicine and Health Technology, Tampere University, Tampere, Finland.
  • Himanen SL; Department of Clinical Neurophysiology, Tampere University Hospital, Wellbeing Services County of Pirkanmaa, Tampere, Finland.
  • Mäkelä K; Faculty of Medicine and Health Technology, Tampere University, Tampere, Finland.
J Ultrasound Med ; 43(7): 1253-1263, 2024 Jul.
Article en En | MEDLINE | ID: mdl-38516753
ABSTRACT

OBJECTIVES:

This study examines the associations between the median nerve (MN) shear wave elastography (SWE), the MN cross-sectional area (CSA), patient's symptoms, and the neurophysiological severity of carpal tunnel syndrome (CTS). The most appropriate site to perform SWE was also tested.

METHODS:

This prospective study comprised 86 wrists of 47 consecutive patients who volunteered for MN ultrasound after an electrodiagnostic study. The neurophysiological severity of CTS was assessed according to the results of a nerve conduction study (NCS). The MN CSA was measured at the carpal tunnel inlet (wCSA) and the forearm (fCSA). SWE was performed on the MN in a longitudinal orientation at the wrist crease (wSWE), at the forearm (fSWE), and within the carpal tunnel (tSWE).

RESULTS:

The wCSA and wSWE correlated positively with the neurophysiological severity of CTS (r = .619, P < .001; r = .582, P < .001, respectively). The optimal cut-off values to discriminate the groups with normal NCS and with findings indicating CTS were 10.5 mm2 for the wCSA and 4.12 m/s for the wSWE. With these cut-off values, wCSA had a sensitivity of 80% and specificity of 87% and wSWE a sensitivity of 88% and specificity of 76%. Neither tSWE nor fSWE correlated with the neurophysiological severity of CTS or differed between NCS negative and positive groups (P = .429, P = .736, respectively).

CONCLUSION:

Shear wave velocity in the MN at the carpal tunnel inlet increases in CTS and correlates to the neurophysiological CTS severity equivalently to CSA measured at the same site.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Índice de Severidad de la Enfermedad / Síndrome del Túnel Carpiano / Diagnóstico por Imagen de Elasticidad / Nervio Mediano Límite: Adult / Aged / Female / Humans / Male / Middle aged Idioma: En Revista: J Ultrasound Med Año: 2024 Tipo del documento: Article País de afiliación: Finlandia Pais de publicación: Reino Unido
Texto completo
Añadir a Mi BVS
Imprimir
XML
PubMed Links
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Índice de Severidad de la Enfermedad / Síndrome del Túnel Carpiano / Diagnóstico por Imagen de Elasticidad / Nervio Mediano Límite: Adult / Aged / Female / Humans / Male / Middle aged Idioma: En Revista: J Ultrasound Med Año: 2024 Tipo del documento: Article País de afiliación: Finlandia Pais de publicación: Reino Unido