{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,5,14]],"date-time":"2026-05-14T08:39:34Z","timestamp":1778747974893,"version":"3.51.4"},"reference-count":23,"publisher":"Japanese Society of Internal Medicine","issue":"5","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Intern. Med."],"published-print":{"date-parts":[[2026,3,1]]},"DOI":"10.2169\/internalmedicine.5305-25","type":"journal-article","created":{"date-parts":[[2025,8,6]],"date-time":"2025-08-06T22:07:24Z","timestamp":1754518044000},"page":"737-742","source":"Crossref","is-referenced-by-count":1,"title":["Isolated Neck Extensor Myopathy Associated with Sarcopenia"],"prefix":"10.2169","volume":"65","author":[{"given":"Shuko","family":"Fujiki","sequence":"first","affiliation":[{"name":"Department of Neurology, National Disaster Medical Center, Japan"},{"name":"Department of Neurology, Musashino Red Cross Hospital, Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Taiki","family":"Matsubayashi","sequence":"additional","affiliation":[{"name":"Department of Neurology, National Disaster Medical Center, Japan"},{"name":"Department of Neurology, Musashino Red Cross Hospital, Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Yoshiki","family":"Sakurai","sequence":"additional","affiliation":[{"name":"Department of Neurology, Musashino Red Cross Hospital, Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Masahiko","family":"Ichijo","sequence":"additional","affiliation":[{"name":"Department of Neurology, Musashino Red Cross Hospital, Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Tomoyuki","family":"Kamata","sequence":"additional","affiliation":[{"name":"Department of Neurology, Musashino Red Cross Hospital, Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"962","reference":[{"key":"1","doi-asserted-by":"publisher","unstructured":"1. Katz JS, Wolfe GI, Burns DK, Bryan WW, Fleckenstein JL, Barohn RJ. Isolated neck extensor myopathy: a common cause of dropped head syndrome. Neurology 46: 917-921, 1996.","DOI":"10.1212\/WNL.46.4.917"},{"key":"2","doi-asserted-by":"crossref","unstructured":"2. Hemmi S, Kurokawa K, Izawa N, Kutoku Y, Murakami T, Sunada Y. Dramatic response of dropped head sign to treatment with steroid in Parkinson&apos;s disease: report of three cases. Intern Med 50: 757-761, 2011.","DOI":"10.2169\/internalmedicine.50.4395"},{"key":"3","doi-asserted-by":"crossref","unstructured":"3. Marcon RM, Ono AHA, Zelada FGB, Cristante AF, Barros TEP. Surgical correction of severe and fixed chin-on-chest deformity. Acta Ortop Bras 26: 415-417, 2018.","DOI":"10.1590\/1413-785220182606169271"},{"key":"4","doi-asserted-by":"crossref","unstructured":"4. Takahashi H, Yokoyama Y, Terajima F, et al. Isolated neck extensor myopathy causing a dropped head: a case report. J Orthop Surg (Hong Kong) 19: 104-107, 2011.","DOI":"10.1177\/230949901101900124"},{"key":"5","doi-asserted-by":"crossref","unstructured":"5. Chen LK, Woo J, Assantachai P, et al. Asian Working Group for Sarcopenia: 2019 Consensus Update on Sarcopenia Diagnosis and Treatment. J Am Med Dir Assoc 21: 300-307.e2, 2020.","DOI":"10.1016\/j.jamda.2019.12.012"},{"key":"6","doi-asserted-by":"crossref","unstructured":"6. Eguchi Y, Toyoguchi T, Koda M, et al. The influence of sarcopenia in dropped head syndrome in older women. Scoliosis Spinal Disord 12: 5, 2017.","DOI":"10.1186\/s13013-017-0110-6"},{"key":"7","doi-asserted-by":"crossref","unstructured":"7. Biran I, Cohen O, Diment J, Peyser A, Bahnof R, Steiner I. Focal, steroid responsive myositis causing dropped head syndrome. Muscle Nerve 22: 769-771, 1999.","DOI":"10.1002\/(SICI)1097-4598(199906)22:6<769::AID-MUS15>3.0.CO;2-D"},{"key":"8","doi-asserted-by":"crossref","unstructured":"8. Shang GK, Han L, Wang ZH, et al. Sarcopenia is attenuated by TRB3 knockout in aging mice via the alleviation of atrophy and fibrosis of skeletal muscles. J Cachexia Sarcopenia Muscle 11: 1104-1120, 2020.","DOI":"10.1002\/jcsm.12560"},{"key":"9","doi-asserted-by":"crossref","unstructured":"9. Mann CJ, Perdiguero E, Kharraz Y, et al. Aberrant repair and fibrosis development in skeletal muscle. Skelet Muscle 1: 21, 2011.","DOI":"10.1186\/2044-5040-1-21"},{"key":"10","doi-asserted-by":"crossref","unstructured":"10. Gaeta M, Mazziotti S, Toscano A, Rodolico C, Mazzeo A, Blandino A.  &quot;Dropped-head&quot; syndrome due to isolated myositis of neck extensor muscles: MRI findings. Skeletal Radiol 35: 110-112, 2006.","DOI":"10.1007\/s00256-005-0011-2"},{"key":"11","doi-asserted-by":"crossref","unstructured":"11. Kastrup A, Gdynia HJ, N\u00e4gele T, Riecker A. Dropped-head syndrome due to steroid responsive focal myositis: a case report and review of the literature. J Neurol Sci 267: 162-165, 2008.","DOI":"10.1016\/j.jns.2007.09.042"},{"key":"12","doi-asserted-by":"publisher","unstructured":"12. Suarez GA, Kelly JJ Jr. The dropped head syndrome. Neurology 42: 1625-1627, 1992.","DOI":"10.1212\/WNL.42.8.1625"},{"key":"13","doi-asserted-by":"crossref","unstructured":"13. Goh KJ, Wong KT, Tan CT. Myopathic dropped head syndrome: a syndrome of mixed aetiology. J Clin Neurosci 7: 334-336, 2000.","DOI":"10.1054\/jocn.1999.0209"},{"key":"14","doi-asserted-by":"crossref","unstructured":"14. Nakanishi K, Taneda M, Sumii T, Yabuuchi T, Iwakura N. Cervical myelopathy caused by dropped head syndrome. Case report and review of the literature. J Neurosurg Spine 6: 165-168, 2007.","DOI":"10.3171\/spi.2007.6.2.165"},{"key":"15","doi-asserted-by":"crossref","unstructured":"15. Muppidi S, Saperstein DS, Shaibani A, Nations SP, Vernino S, Wolfe GI. Isolated neck extensor myopathy: is it responsive to immunotherapy? J Clin Neuromuscul Dis 12: 26-29, 2010.","DOI":"10.1097\/CND.0b013e3181d4a515"},{"key":"16","doi-asserted-by":"crossref","unstructured":"16. Varghese N, Chandraghosh VKD, Menon D, et al. Neck extensor myopathy- a treatable cause of dropped head syndrome. Acta Neurol Belg 124: 2029-2033, 2024.","DOI":"10.1007\/s13760-024-02617-7"},{"key":"17","doi-asserted-by":"crossref","unstructured":"17. Devic P, Gallay L, Streichenberger N, Petiot P. Focal myositis: a review. Neuromuscul Disord 26: 725-733, 2016.","DOI":"10.1016\/j.nmd.2016.08.014"},{"key":"18","doi-asserted-by":"crossref","unstructured":"18. Chuquilin M, Al-Lozi M. Primary amyloidosis presenting as &quot;dropped head syndrome.&quot;  Muscle Nerve 43: 905-909, 2011.","DOI":"10.1002\/mus.22049"},{"key":"19","doi-asserted-by":"publisher","unstructured":"19. Laurent C, Aouizerate J, Hourdille A, Itti E, Authier FJ, Chevalier X. Dropped head syndrome with proximal myopathy revealing AL amyloidosis. Joint Bone Spine 85: 779-781, 2018.","DOI":"10.1016\/j.jbspin.2018.03.011"},{"key":"20","unstructured":"20. Allenbach Y, Mammen AL, Benveniste O, Stenzel W; Immune-Mediated Necrotizing Myopathies Working Group. 224th ENMC International Workshop:: Clinico-sero-pathological classification of immune-mediated necrotizing myopathies Zandvoort, the Netherlands, 14-16 October 2016. Neuromuscul Disord 28: 87-99, 2018."},{"key":"21","doi-asserted-by":"crossref","unstructured":"21. Sehgal R, Medina-Flores R, Yachoui R, Kenney CV. Immune mediated necrotizing myopathy: a cause of isolated myopathy of neck extensor muscle. Clin Med Res 14: 145-150, 2016.","DOI":"10.3121\/cmr.2016.1318"},{"key":"22","doi-asserted-by":"crossref","unstructured":"22. Ueno T, Suzuki C, Nishino I, Tomiyama M. Dropped head syndrome caused by immune-mediated necrotizing myopathy. Intern Med 58: 3343-3344, 2019.","DOI":"10.2169\/internalmedicine.2930-19"},{"key":"23","doi-asserted-by":"crossref","unstructured":"23. Clynes MA, Gregson CL, Bruy\u00e8re O, Cooper C, Dennison EM. Osteosarcopenia: where osteoporosis and sarcopenia collide. Rheumatology (Oxford) 60: 529-537, 2021.","DOI":"10.1093\/rheumatology\/keaa755"}],"container-title":["Internal Medicine"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/www.jstage.jst.go.jp\/article\/internalmedicine\/65\/5\/65_5305-25\/_pdf","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2026,3,7]],"date-time":"2026-03-07T03:45:46Z","timestamp":1772855146000},"score":1,"resource":{"primary":{"URL":"https:\/\/www.jstage.jst.go.jp\/article\/internalmedicine\/65\/5\/65_5305-25\/_article"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2026,3,1]]},"references-count":23,"journal-issue":{"issue":"5","published-print":{"date-parts":[[2026]]}},"URL":"https:\/\/doi.org\/10.2169\/internalmedicine.5305-25","relation":{},"ISSN":["0918-2918","1349-7235"],"issn-type":[{"value":"0918-2918","type":"print"},{"value":"1349-7235","type":"electronic"}],"subject":[],"published":{"date-parts":[[2026,3,1]]},"article-number":"5305-25"}}