{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,1,15]],"date-time":"2026-01-15T02:00:13Z","timestamp":1768442413283,"version":"3.49.0"},"reference-count":25,"publisher":"Ovid Technologies (Wolters Kluwer Health)","issue":"2","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":[],"published-print":{"date-parts":[[2019,6]]},"abstract":"<jats:p>We present the case of a professional golf player who gradually developed a boutonniere deformity of the thumb due to chronic repetitive injury to the thumb and was treated with reconstruction of its insertion onto the proximal phalangeal base. The athlete showed an insertion variation of the extensor pollicis brevis, where some slips attached onto the extensor hood and the other slips ran along with the extensor pollicis longus to the distal phalanx, providing no slip to the proximal phalanx. The slips inserting to the distal phalanx were transferred to the base of the proximal phalanx and sagittal band reconstruction. As a result, the boutonniere deformity of the thumb fully recovered with satisfactory outcomes.<\/jats:p>\n          <jats:p>\n                           <jats:bold>Level of Evidence:<\/jats:bold> Level V.<\/jats:p>","DOI":"10.1097\/bth.0000000000000228","type":"journal-article","created":{"date-parts":[[2019,1,30]],"date-time":"2019-01-30T01:18:03Z","timestamp":1548811083000},"page":"70-73","source":"Crossref","is-referenced-by-count":1,"title":["Reconstruction of Chronic Boutonniere Deformity of the Thumb in a Golf Player"],"prefix":"10.1097","volume":"23","author":[{"given":"Jae-Sung","family":"Yoo","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Jong-Phil","family":"Kim","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Seong-Jun","family":"Kim","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Joon-kyom","family":"Kim","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"276","reference":[{"key":"R1-20230901","doi-asserted-by":"crossref","first-page":"505","DOI":"10.1016\/S0266-7681(00)80024-8","article-title":"Traumatic boutonniere deformity of the thumb","volume":"25","author":"Cardon","year":"2000","journal-title":"J Hand Surg Br"},{"key":"R2-20230901","doi-asserted-by":"crossref","first-page":"529","DOI":"10.3928\/0147-7447-19800601-05","article-title":"Reconstructive surgery of the thumb in rheumatoid arthritis","volume":"3","author":"Brumfield","year":"1980","journal-title":"Orthopedics"},{"key":"R3-20230901","doi-asserted-by":"crossref","first-page":"541","DOI":"10.1016\/S0749-0712(21)00341-3","article-title":"The rheumatoid thumb","volume":"12","author":"Stein","year":"1996","journal-title":"Hand Clin"},{"key":"R4-20230901","doi-asserted-by":"crossref","first-page":"999","DOI":"10.1016\/0363-5023(90)90032-M","article-title":"Boutonniere rheumatoid thumb deformity","volume":"15","author":"Terrono","year":"1990","journal-title":"J Hand Surg Am"},{"key":"R5-20230901","doi-asserted-by":"crossref","first-page":"582","DOI":"10.1016\/S0363-5023(09)90019-3","article-title":"Congenital flexion deformities of the proximal interphalangeal joint in children: a subgroup of camptodactyly","volume":"15","author":"Koman","year":"1990","journal-title":"J Hand Surg Am"},{"key":"R6-20230901","doi-asserted-by":"crossref","first-page":"15","DOI":"10.1016\/0072-968X(75)90028-5","article-title":"Congenital aplasia or hypoplasia of the finger extensors","volume":"7","author":"Tsuge","year":"1975","journal-title":"Hand"},{"key":"R7-20230901","doi-asserted-by":"crossref","first-page":"1004","DOI":"10.1016\/0363-5023(93)90391-F","article-title":"Congenital attenuation of the extensor tendon central slip","volume":"18","author":"Carneiro","year":"1993","journal-title":"J Hand Surg Am"},{"key":"R8-20230901","first-page":"600","article-title":"Variation and clinical significance of extensor pollicis brevis: a study in South Indian cadavers","volume":"32","author":"Nayak","year":"2009","journal-title":"Chang Gung Med J"},{"key":"R9-20230901","doi-asserted-by":"crossref","first-page":"378","DOI":"10.1016\/0266-7681_86_90161-0","article-title":"Anatomical variations of the extensor pollicis brevis","volume":"11","author":"Dawson","year":"1986","journal-title":"J Hand Surg Br"},{"key":"R10-20230901","doi-asserted-by":"crossref","first-page":"171","DOI":"10.1142\/S0218810414500166","article-title":"Anatomy of the extensor pollicis brevis associated with an extension mechanism of the thumb metacarpophalangeal joint","volume":"19","author":"Shigematsu","year":"2014","journal-title":"Hand Surg"},{"key":"R11-20230901","doi-asserted-by":"crossref","first-page":"324","DOI":"10.1177\/1753193417704610","article-title":"Thumb boutonniere deformity without rheumatoid arthritis or trauma","volume":"43","author":"Hara","year":"2018","journal-title":"J Hand Surg Eur"},{"key":"R12-20230901","doi-asserted-by":"crossref","first-page":"790","DOI":"10.1016\/S0266-7681(97)80450-0","article-title":"Isolated subluxation of the extensor pollicis longus tendon. 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