{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,9,26]],"date-time":"2025-09-26T13:29:28Z","timestamp":1758893368009,"version":"3.40.5"},"reference-count":28,"publisher":"Wiley","issue":"3","license":[{"start":{"date-parts":[[2020,12,22]],"date-time":"2020-12-22T00:00:00Z","timestamp":1608595200000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by-nc-nd\/4.0\/"}],"funder":[{"DOI":"10.13039\/100009950","name":"MOE","doi-asserted-by":"publisher","id":[{"id":"10.13039\/100009950","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100003725","name":"National Research Foundation of Korea","doi-asserted-by":"publisher","id":[{"id":"10.13039\/501100003725","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100002468","name":"Dong-A University","doi-asserted-by":"publisher","id":[{"id":"10.13039\/501100002468","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Muscle and Nerve"],"published-print":{"date-parts":[[2021,3]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:p>We propose the finger drop sign as a new clinical variant of acute motor axonal neuropathy (AMAN) defined by immunological and radiological evidence. We identified eight consecutive patients who had AMAN. All of them developed prominent involvement of the finger extensors. We performed magnetic resonance imaging (MRI) of the extremity muscles and serological assays for antiganglioside antibodies and <jats:italic>Campylobacter jejuni<\/jats:italic>. Patients with AMAN showed characteristic and a markedly sustained weakness of the finger extensors with a distinctive pattern of the finger drop sign. Limb MRI revealed unevenly distributed abnormal signals in the muscles mainly innervated by the posterior interosseous nerve. All tested patients showed positivity for immunoglobulin G antibody against ganglioside complex of GM1 and phosphatidic acid. A pathophysiological understanding of this unique syndrome can provide further insight into antiganglioside\u2010antibody\u2010mediated axonal injury in Guillain\u2010Barr\u00e9 syndrome.<\/jats:p>","DOI":"10.1002\/mus.27126","type":"journal-article","created":{"date-parts":[[2020,11,21]],"date-time":"2020-11-21T00:23:27Z","timestamp":1605918207000},"page":"336-343","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":8,"title":["Finger drop sign as a new variant of acute motor axonal neuropathy"],"prefix":"10.1002","volume":"63","author":[{"given":"Byeol\u2010A","family":"Yoon","sequence":"first","affiliation":[{"name":"Department of Neurology Dong\u2010A University College of Medicine  Busan Republic of Korea"},{"name":"Department of Peripheral Neuropathy Research Center Dong\u2010A University College of Medicine  Busan Republic of 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University College of Medicine  Osaka Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Jong Hwa","family":"Lee","sequence":"additional","affiliation":[{"name":"Department of Physical Medicine and Rehabilitation Dong\u2010A University College of Medicine  Busan Republic of Korea"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Jong Seok","family":"Bae","sequence":"additional","affiliation":[{"name":"Department of Neurology Hallym University College of Medicine  Seoul Republic of Korea"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-9204-3718","authenticated-orcid":false,"given":"Jong Kuk","family":"Kim","sequence":"additional","affiliation":[{"name":"Department of Neurology Dong\u2010A University College of Medicine  Busan Republic of Korea"},{"name":"Department of Peripheral Neuropathy Research Center Dong\u2010A University College of Medicine  Busan Republic of 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