{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,29]],"date-time":"2026-10-29T10:55:04Z","timestamp":1793271304438,"version":"4.5.0"},"reference-count":16,"publisher":"SAGE Publications","issue":"6","license":[{"start":{"date-parts":[[2021,1,7]],"date-time":"2021-01-07T00:00:00Z","timestamp":1609977600000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/journals.sagepub.com\/page\/policies\/text-and-data-mining-license"}],"funder":[{"DOI":"10.13039\/100014388","name":"Acumed","doi-asserted-by":"publisher","award":["n\/a"],"award-info":[{"award-number":["n\/a"]}],"id":[{"id":"10.13039\/100014388","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":["journals.sagepub.com"],"crossmark-restriction":true},"short-container-title":["Hand (New York, N,Y.)"],"published-print":{"date-parts":[[2022,11]]},"abstract":"<jats:sec>\n                    <jats:title>Background:<\/jats:title>\n                    <jats:p>Management of scaphoid nonunions with bone loss varies substantially. Commonly, internal fixation consists of a single headless compression screw. Recently, some authors have reported on the theoretical benefits of dual-screw fixation. We hypothesized that using 2 headless compression screws would impart improved stiffness over a single-screw construct.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Methods:<\/jats:title>\n                    <jats:p>Using a cadaveric model, we compared biomechanical characteristics of a single tapered 3.5- to 3.6-mm headless compression screw with 2 tapered 2.5- to 2.8-mm headless compression screws in a scaphoid waist nonunion model. The primary outcome measurement was construct stiffness. Secondary outcome measurements included load at 1 and 2 mm of displacement, load to failure for each specimen, and qualitative assessment of mode of failure.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Results:<\/jats:title>\n                    <jats:p>Stiffness during load to failure was not significantly different between single- and double-screw configurations ( P = .8). Load to failure demonstrated no statistically significant difference between single- and double-screw configurations. Using a qualitative assessment, the double-screw construct maintained rotational stability more than the single-screw construct ( P = .029).<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Conclusions:<\/jats:title>\n                    <jats:p>Single- and double-screw fixation constructs in a cadaveric scaphoid nonunion model demonstrate similar construct stiffness, load to failure, and load to 1- and 2-mm displacement. Modes of failure may differ between constructs and represent an area for further study. The theoretical benefit of dual-screw fixation should be weighed against the morphologic limitations to placing 2 screws in a scaphoid nonunion.<\/jats:p>\n                  <\/jats:sec>","DOI":"10.1177\/1558944720974111","type":"journal-article","created":{"date-parts":[[2021,1,13]],"date-time":"2021-01-13T19:27:20Z","timestamp":1610566040000},"page":"1122-1127","update-policy":"https:\/\/doi.org\/10.1177\/sage-journals-update-policy","source":"Crossref","is-referenced-by-count":10,"title":["Single Versus Dual Headless Compression Screw Fixation of Scaphoid Nonunions: A Biomechanical Comparison"],"prefix":"10.1177","volume":"17","author":[{"given":"Luke T.","family":"Nicholson","sequence":"first","affiliation":[{"name":"University of Southern California, Los Angeles, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-4865-6909","authenticated-orcid":false,"given":"Kristen M.","family":"Sochol","sequence":"additional","affiliation":[{"name":"University of Southern California, Los Angeles, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-7581-8788","authenticated-orcid":false,"given":"Ali","family":"Azad","sequence":"additional","affiliation":[{"name":"University of Southern California, Los Angeles, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Ram Kiran","family":"Alluri","sequence":"additional","affiliation":[{"name":"University of Southern California, Los Angeles, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"J. Ryan","family":"Hill","sequence":"additional","affiliation":[{"name":"University of Southern California, Los Angeles, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Alidad","family":"Ghiassi","sequence":"additional","affiliation":[{"name":"University of Southern California, Los Angeles, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"179","published-online":{"date-parts":[[2021,1,7]]},"reference":[{"key":"bibr1-1558944720974111","volume-title":"Fracture Management for Primary Care","author":"Calbach W","year":"2003","edition":"2"},{"key":"bibr2-1558944720974111","doi-asserted-by":"publisher","DOI":"10.1016\/S0278-5919(05)70254-4"},{"key":"bibr3-1558944720974111","doi-asserted-by":"publisher","DOI":"10.1016\/S0363-5023(80)80087-6"},{"key":"bibr4-1558944720974111","doi-asserted-by":"publisher","DOI":"10.1097\/01.blo.0000205886.66081.9d"},{"key":"bibr5-1558944720974111","doi-asserted-by":"publisher","DOI":"10.1302\/0301-620X.66B1.6693468"},{"key":"bibr6-1558944720974111","doi-asserted-by":"publisher","DOI":"10.1016\/S0266-7681(96)80021-0"},{"key":"bibr7-1558944720974111","doi-asserted-by":"publisher","DOI":"10.1016\/j.jhsa.2003.12.006"},{"key":"bibr8-1558944720974111","doi-asserted-by":"publisher","DOI":"10.1016\/j.jhsa.2014.02.030"},{"key":"bibr9-1558944720974111","doi-asserted-by":"publisher","DOI":"10.2106\/00004623-200301000-00012"},{"issue":"4","key":"bibr10-1558944720974111","first-page":"271","volume":"65","author":"Panchal A","year":"2007","journal-title":"Bull NYU Hosp Jt Dis"},{"key":"bibr11-1558944720974111","doi-asserted-by":"publisher","DOI":"10.2106\/JBJS.D.03058"},{"key":"bibr12-1558944720974111","doi-asserted-by":"publisher","DOI":"10.1053\/jhsu.2002.36519"},{"key":"bibr13-1558944720974111","doi-asserted-by":"publisher","DOI":"10.1016\/S0749-0712(21)00083-4"},{"key":"bibr14-1558944720974111","doi-asserted-by":"publisher","DOI":"10.2106\/00004623-199612000-00005"},{"key":"bibr15-1558944720974111","doi-asserted-by":"publisher","DOI":"10.3928\/01477447-20100104-16"},{"key":"bibr16-1558944720974111","doi-asserted-by":"publisher","DOI":"10.1016\/j.jhsa.2007.05.030"}],"container-title":["HAND"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/journals.sagepub.com\/doi\/pdf\/10.1177\/1558944720974111","content-type":"application\/pdf","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/journals.sagepub.com\/doi\/full-xml\/10.1177\/1558944720974111","content-type":"application\/xml","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/journals.sagepub.com\/doi\/pdf\/10.1177\/1558944720974111","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2026,4,29]],"date-time":"2026-04-29T07:27:16Z","timestamp":1777447636000},"score":1,"resource":{"primary":{"URL":"https:\/\/journals.sagepub.com\/doi\/10.1177\/1558944720974111"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2021,1,7]]},"references-count":16,"journal-issue":{"issue":"6","published-print":{"date-parts":[[2022,11]]}},"alternative-id":["10.1177\/1558944720974111"],"URL":"https:\/\/doi.org\/10.1177\/1558944720974111","relation":{},"ISSN":["1558-9447","1558-9455"],"issn-type":[{"value":"1558-9447","type":"print"},{"value":"1558-9455","type":"electronic"}],"subject":[],"published":{"date-parts":[[2021,1,7]]}}}