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Assessing ulnar neuropathy at the elbow using magnetoneurography.
Tanaka, Yuta; Sasaki, Toru; Kawabata, Shigenori; Hashimoto, Jun; Higashikawa, Hisato; Hoshino, Yuko; Sekihara, Kensuke; Adachi, Yoshiaki; Fujita, Koji; Nimura, Akimoto; Watanabe, Taishi; Miyano, Yuki; Kaminaka, Saeri; Yamamoto, Yusuke; Yoshii, Toshitaka.
Afiliación
  • Tanaka Y; Department of Orthopedic Surgery, Graduate school of Medical and Dental Sciences, Tokyo Medical and Dental University, 1-5-45 Yushima, Bunkyo-ku, Tokyo 113-8510, Japan. Electronic address: tayuorth@tmd.ac.jp.
  • Sasaki T; Department of Orthopedic Surgery, Graduate school of Medical and Dental Sciences, Tokyo Medical and Dental University, 1-5-45 Yushima, Bunkyo-ku, Tokyo 113-8510, Japan. Electronic address: t-sasaki.orth@tmd.ac.jp.
  • Kawabata S; Department of Orthopedic Surgery, Graduate school of Medical and Dental Sciences, Tokyo Medical and Dental University, 1-5-45 Yushima, Bunkyo-ku, Tokyo 113-8510, Japan; Department of Advanced Technology in Medicine, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University,
  • Hashimoto J; Department of Orthopedic Surgery, Graduate school of Medical and Dental Sciences, Tokyo Medical and Dental University, 1-5-45 Yushima, Bunkyo-ku, Tokyo 113-8510, Japan; Department of Advanced Technology in Medicine, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University,
  • Higashikawa H; Department of Orthopedic Surgery, Graduate school of Medical and Dental Sciences, Tokyo Medical and Dental University, 1-5-45 Yushima, Bunkyo-ku, Tokyo 113-8510, Japan. Electronic address: higashikawa.orth@tmd.ac.jp.
  • Hoshino Y; Department of Advanced Technology in Medicine, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, 1-5-45 Yushima, Bunkyo-ku, Tokyo 113-8510, Japan. Electronic address: hoshino.atm@tmd.ac.jp.
  • Sekihara K; Department of Advanced Technology in Medicine, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, 1-5-45 Yushima, Bunkyo-ku, Tokyo 113-8510, Japan. Electronic address: k-sekihara@nifty.com.
  • Adachi Y; Applied Electronics Laboratory, Kanazawa Institute of Technology, 7-1 Ogigaoka, Nonoichi, Kanazawa-shi, Ishikawa 920-1331, Japan.
  • Fujita K; Department of Functional Joint Anatomy, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, 1-5-45 Yushima, Bunkyo-ku, Tokyo 113-8510, Japan. Electronic address: fujiorth@tmd.ac.jp.
  • Nimura A; Department of Functional Joint Anatomy, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, 1-5-45 Yushima, Bunkyo-ku, Tokyo 113-8510, Japan. Electronic address: nimura.orj@tmd.ac.jp.
  • Watanabe T; Ricoh Institute of Future Technology, RICOH Company, Ltd., 2-3-10 Kandasurugadai, Chiyoda-ku, Tokyo 101-0062, Japan. Electronic address: taishi.watanabe@jp.ricoh.com.
  • Miyano Y; Ricoh Institute of Future Technology, RICOH Company, Ltd., 2-3-10 Kandasurugadai, Chiyoda-ku, Tokyo 101-0062, Japan. Electronic address: yuki.yh.hasegawa@jp.ricoh.com.
  • Kaminaka S; Ricoh Institute of Future Technology, RICOH Company, Ltd., 2-3-10 Kandasurugadai, Chiyoda-ku, Tokyo 101-0062, Japan. Electronic address: saeri.kaminaka@jp.ricoh.com.
  • Yamamoto Y; Ricoh Institute of Future Technology, RICOH Company, Ltd., 2-3-10 Kandasurugadai, Chiyoda-ku, Tokyo 101-0062, Japan. Electronic address: yusuke.yamamoto1@jp.ricoh.com.
  • Yoshii T; Department of Orthopedic Surgery, Graduate school of Medical and Dental Sciences, Tokyo Medical and Dental University, 1-5-45 Yushima, Bunkyo-ku, Tokyo 113-8510, Japan. Electronic address: yoshii.orth@tmd.ac.jp.
Clin Neurophysiol ; 161: 180-187, 2024 May.
Article en En | MEDLINE | ID: mdl-38520798
ABSTRACT

OBJECTIVE:

To measure neuromagnetic fields of ulnar neuropathy patients at the elbow after electrical stimulation and evaluate ulnar nerve function at the elbow with high spatial resolution.

METHODS:

A superconducting quantum interference device magnetometer system recorded neuromagnetic fields of the ulnar nerve at the elbow after electrical stimulation at the wrist in 16 limbs of 16 healthy volunteers and 21 limbs of 20 patients with ulnar neuropathy at the elbow. After artifact removal, neuromagnetic field signals were processed into current distributions, which were superimposed onto X-ray images for visualization.

RESULTS:

Based on the results in healthy volunteers, conduction velocity of 30 m/s or 50% attenuation in current amplitude was set as the reference value for conduction disturbance. Of the 21 patient limbs, 15 were measurable and lesion sites were detected, whereas 6 limbs were unmeasurable due to weak neuromagnetic field signals. Seven limbs were deemed normal by nerve conduction study, but 5 showed conduction disturbances on magnetoneurography.

CONCLUSIONS:

Measuring the magnetic field after nerve stimulation enabled visualization of neurophysiological activity in patients with ulnar neuropathy at the elbow and evaluation of conduction disturbances.

SIGNIFICANCE:

Magnetoneurography may be useful for assessing lesion sites in patients with ulnar neuropathy at the elbow.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Nervio Cubital / Neuropatías Cubitales / Codo / Conducción Nerviosa Límite: Adult / Aged / Female / Humans / Male / Middle aged Idioma: En Revista: Clin Neurophysiol Asunto de la revista: NEUROLOGIA / PSICOFISIOLOGIA Año: 2024 Tipo del documento: Article Pais de publicación: Países Bajos
Texto completo
Añadir a Mi BVS
Imprimir
XML
PubMed Links
Buscar en Google

Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Nervio Cubital / Neuropatías Cubitales / Codo / Conducción Nerviosa Límite: Adult / Aged / Female / Humans / Male / Middle aged Idioma: En Revista: Clin Neurophysiol Asunto de la revista: NEUROLOGIA / PSICOFISIOLOGIA Año: 2024 Tipo del documento: Article Pais de publicación: Países Bajos