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The presented case describes an uncommon presentation of hypothenar hammer syndrome in a patient without history of repetitive blunt trauma or injury and discusses the diagnosis, pathophysiology and treatment options for symptomatic ulnar artery aneurysm.<\/jats:p>","DOI":"10.1136\/bcr-2020-240729","type":"journal-article","created":{"date-parts":[[2021,5,20]],"date-time":"2021-05-20T11:16:43Z","timestamp":1621509403000},"page":"e240729","update-policy":"https:\/\/doi.org\/10.1136\/crossmarkpolicy","source":"Crossref","is-referenced-by-count":4,"title":["Hypothenar hammer syndrome and repair of ulnar artery aneurysm in a patient without history of trauma"],"prefix":"10.1136","volume":"14","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-0792-5893","authenticated-orcid":false,"given":"Justin","family":"Hart","sequence":"first","affiliation":[{"name":"Plastic and Reconstructive Surgery, Beaumont Hospital - Farmington Hills, Farmington Hills, Michigan, USA"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Raymond","family":"Hajjar","sequence":"additional","affiliation":[{"name":"Plastic and Reconstructive Surgery, Beaumont Hospital - 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