{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,8,26]],"date-time":"2026-08-26T14:45:30Z","timestamp":1787755530112,"version":"build-2784847793"},"reference-count":11,"publisher":"Ovid Technologies (Wolters Kluwer Health)","issue":"1","content-domain":{"domain":["lww.com","ovid.com"],"crossmark-restriction":true},"short-container-title":[],"abstract":"<jats:sec>\n                    <jats:title>Cases:<\/jats:title>\n                    <jats:p>Two patients with spontaneous loss of thumb interphalangeal joint extension were referred after history, electrodiagnostic, and\/or magnetic resonance imaging (MRI) findings were felt to demonstrate a posterior interosseous nerve (PIN) palsy. Subsequent physical examination and additional directed studies suggested an alternative explanation: rupture of the extensor pollicis longus (EPL) tendon, subsequently confirmed at surgery. An extensor indicis proprius to EPL transfer restored thumb function.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Conclusion:<\/jats:title>\n                    <jats:p>Electrodiagnostic and MRI changes consistent with diffuse PIN palsy may occur in the setting of EPL rupture. An accurate diagnosis of EPL dysfunction requires careful physical examination and confirmatory imaging. Further study of this previously unreported phenomenon is required.<\/jats:p>\n                  <\/jats:sec>","DOI":"10.2106\/jbjs.cc.24.00344","type":"journal-article","created":{"date-parts":[[2025,1,16]],"date-time":"2025-01-16T14:02:46Z","timestamp":1737036166000},"update-policy":"https:\/\/doi.org\/10.1097\/lww.0000000000001000","source":"Crossref","is-referenced-by-count":0,"title":["Extensor Pollicis Longus Tendon Rupture With Concomitant Electrodiagnostic and MRI Findings of Posterior Interosseous Nerve Palsy"],"prefix":"10.2106","volume":"15","author":[{"given":"James S.","family":"Lin","sequence":"first","affiliation":[{"name":"Department of Orthopedic Surgery, Mayo Clinic, Rochester, Minnesota"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-2886-1510","authenticated-orcid":false,"given":"Sanjeev","family":"Kakar","sequence":"additional","affiliation":[{"name":"Department of Orthopedic Surgery, Mayo Clinic, Rochester, Minnesota"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-9658-8192","authenticated-orcid":false,"given":"Alexander Y.","family":"Shin","sequence":"additional","affiliation":[{"name":"Department of Orthopedic Surgery, Mayo Clinic, Rochester, Minnesota"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-9856-6448","authenticated-orcid":false,"given":"Allen T.","family":"Bishop","sequence":"additional","affiliation":[{"name":"Department of Orthopedic Surgery, Mayo Clinic, Rochester, Minnesota"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"276","published-online":{"date-parts":[[2025,1]]},"reference":[{"issue":"1","key":"bib1-20250116","doi-asserted-by":"crossref","first-page":"76","DOI":"10.1016\/S0072-968X(79)80015-7","article-title":"Rupture of the extensor pollicis longus tendon after fracture of the lower end of the radius--a clinical and microangiographic study","volume":"11","author":"Engkvist","year":"1979","journal-title":"Hand."},{"issue":"1","key":"bib2-20250116","doi-asserted-by":"crossref","first-page":"51","DOI":"10.1016\/0266-7681_90_90048-9","article-title":"Clinical and microangiographic studies on rupture of the E.P.L. tendon after distal radial fractures","volume":"15","author":"Hirasawa","year":"1990","journal-title":"J Hand Surg Br."},{"issue":"2","key":"bib3-20250116","doi-asserted-by":"crossref","first-page":"225","DOI":"10.1054\/jhsb.2000.0370","article-title":"Isolated paralysis of the extensor pollicis longus muscle: a further variation of posterior interosseous nerve palsy","volume":"25","author":"Horton","year":"2000","journal-title":"J Hand Surg Br."},{"issue":"1","key":"bib4-20250116","doi-asserted-by":"crossref","first-page":"104","DOI":"10.1016\/S0266-7681(98)80234-9","article-title":"Posterior interosseous nerve palsy","volume":"23","author":"Suematsu","year":"1998","journal-title":"J Hand Surg Br."},{"issue":"3","key":"bib5-20250116","doi-asserted-by":"crossref","first-page":"e69","DOI":"10.2106\/JBJS.CC.L.00325","article-title":"Isolated distal posterior interosseous nerve palsy mimicking extensor pollicis longus tendon rupture: a case report and review of the literature","volume":"3","author":"Morrell","year":"2013","journal-title":"JBJS Case Connect."},{"issue":"11","key":"bib6-20250116","doi-asserted-by":"crossref","first-page":"1537","DOI":"10.1016\/j.jse.2013.01.028","article-title":"A comparative analysis of fatty infiltration and muscle atrophy in patients with chronic rotator cuff tears and suprascapular neuropathy","volume":"22","author":"Beeler","year":"2013","journal-title":"J Shoulder Elbow Surg."},{"issue":"2","key":"bib7-20250116","doi-asserted-by":"crossref","first-page":"e0309","DOI":"10.2106\/JBJS.CC.19.00309","article-title":"Flexor tendon rupture after distal radius malunion associated with electromyographic abnormalities: a case report","volume":"10","author":"Lalchandani","year":"2020","journal-title":"JBJS Case Connect."},{"issue":"6","key":"bib8-20250116","doi-asserted-by":"crossref","first-page":"983","DOI":"10.1016\/j.jse.2010.10.039","article-title":"Suprascapular neuropathy in a shoulder referral practice","volume":"20","author":"Boykin","year":"2011","journal-title":"J Shoulder Elbow Surg."},{"key":"bib9-20250116","first-page":"155894472311755","article-title":"Spontaneous rupture of the extensor pollicis longus tendon: a systematic review","author":"Lister","year":"2023","journal-title":"Hand."},{"issue":"6513","key":"bib10-20250116","doi-asserted-by":"crossref","first-page":"973","DOI":"10.1016\/S0140-6736(48)90611-4","article-title":"Neuralgic amyotrophy; 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