{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,5,4]],"date-time":"2026-05-04T21:15:40Z","timestamp":1777929340699,"version":"3.51.4"},"reference-count":29,"publisher":"SAGE Publications","issue":"1","license":[{"start":{"date-parts":[[2026,1,1]],"date-time":"2026-01-01T00:00:00Z","timestamp":1767225600000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by-nc\/4.0\/"},{"start":{"date-parts":[[2026,1,1]],"date-time":"2026-01-01T00:00:00Z","timestamp":1767225600000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/journals.sagepub.com\/page\/policies\/text-and-data-mining-license"}],"funder":[{"DOI":"10.13039\/501100003710","name":"Korea Health Industry Development Institute","doi-asserted-by":"publisher","award":["RS-2025-02264012"],"award-info":[{"award-number":["RS-2025-02264012"]}],"id":[{"id":"10.13039\/501100003710","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100001702","name":"AO Foundation","doi-asserted-by":"crossref","award":["AOTrauma_S_APAC_2025-01918"],"award-info":[{"award-number":["AOTrauma_S_APAC_2025-01918"]}],"id":[{"id":"10.13039\/501100001702","id-type":"DOI","asserted-by":"crossref"}]}],"content-domain":{"domain":["journals.sagepub.com"],"crossmark-restriction":true},"short-container-title":["J Orthop Surg (Hong Kong)"],"published-print":{"date-parts":[[2026,1]]},"abstract":"<jats:sec>\n                    <jats:title>Background<\/jats:title>\n                    <jats:p>Femoral neck shortening following internal fixation of unstable femoral neck fractures can compromise functional recovery, particularly in young, active patients. This study aimed to evaluate the efficacy of a length-stable dynamic hip screw (LSD) construct in minimizing postoperative shortening compared to the femoral neck system (FNS).<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Methods<\/jats:title>\n                    <jats:p>\n                      A retrospective review was conducted on 65 patients with high-grade unstable femoral neck fractures treated between February 2016 and February 2023 at a single institution. Patients underwent either FNS (\n                      <jats:italic toggle=\"yes\">n<\/jats:italic>\n                      = 31) or LSD (\n                      <jats:italic toggle=\"yes\">n<\/jats:italic>\n                      = 34) fixation. Femoral neck shortening was quantified using vector-based analysis derived from contralateral femoral comparison at final follow-up. Functional outcomes were assessed using the Hip Disability and Osteoarthritis Outcome Score (HOOS).\n                    <\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Results<\/jats:title>\n                    <jats:p>\n                      The LSD group demonstrated significantly less femoral neck shortening compared to the FNS group (5.0 \u00b1 4.6\u00a0mm vs 10.4 \u00b1 6.7\u00a0mm,\n                      <jats:italic toggle=\"yes\">p<\/jats:italic>\n                      = 0.001). Final HOOS scores were significantly higher in the LSD group in the symptom (88.1 vs 75.8,\n                      <jats:italic toggle=\"yes\">p<\/jats:italic>\n                      = 0.049) and stiffness subdomains. Union was achieved in 31 of 34 patients (91.2%) in the LSD group and 26 of 31 (83.9%) in the FNS group (\n                      <jats:italic toggle=\"yes\">p<\/jats:italic>\n                      = 0.605). Other complications were more frequent in the FNS group but did not reach statistical significance.\n                    <\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Conclusion<\/jats:title>\n                    <jats:p>Length-stable fixation using the LSD construct significantly reduced postoperative femoral neck shortening in high-grade unstable fractures, without compromising union rates or functional recovery. Our results support the role of length-stable constructs as a reliable option for maintaining anatomic integrity in unstable femoral neck fractures.<\/jats:p>\n                  <\/jats:sec>","DOI":"10.1177\/10225536261415697","type":"journal-article","created":{"date-parts":[[2026,1,27]],"date-time":"2026-01-27T07:32:00Z","timestamp":1769499120000},"update-policy":"https:\/\/doi.org\/10.1177\/sage-journals-update-policy","source":"Crossref","is-referenced-by-count":1,"title":["Length-stable fixation reduces femoral neck shortening in unstable femoral neck fractures: A retrospective comparative study of length-stable dynamic hip screw versus femoral neck system fixation"],"prefix":"10.1177","volume":"34","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-6252-5310","authenticated-orcid":false,"given":"Seonghyun","family":"Kang","sequence":"first","affiliation":[{"name":"Korea University Guro Hospital"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-7566-6945","authenticated-orcid":false,"given":"Wonseok","family":"Choi","sequence":"additional","affiliation":[{"name":"Korea University Guro Hospital"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Jeong Seok","family":"Choi","sequence":"additional","affiliation":[{"name":"Korea University Guro Hospital"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-8095-6173","authenticated-orcid":false,"given":"Eic Ju","family":"Lim","sequence":"additional","affiliation":[{"name":"Chungbuk National University Hospital"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"SungJin","family":"Ahn","sequence":"additional","affiliation":[{"name":"Korea University Guro Hospital"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Jong-Keon","family":"Oh","sequence":"additional","affiliation":[{"name":"Korea University Guro Hospital"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"William T.","family":"Kent","sequence":"additional","affiliation":[{"name":"University of California San Diego"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Whee Sung","family":"Son","sequence":"additional","affiliation":[{"name":"Yeungnam University Medical Center"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-4962-3535","authenticated-orcid":false,"given":"Jae-Woo","family":"Cho","sequence":"additional","affiliation":[{"name":"Korea University Guro Hospital"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"179","published-online":{"date-parts":[[2026,1,26]]},"reference":[{"key":"e_1_3_6_2_2","doi-asserted-by":"publisher","DOI":"10.1177\/2151459319859139"},{"key":"e_1_3_6_3_2","doi-asserted-by":"publisher","DOI":"10.1186\/s13018-023-03787-5"},{"key":"e_1_3_6_4_2","doi-asserted-by":"publisher","DOI":"10.1097\/BOT.0000000000000836"},{"key":"e_1_3_6_5_2","doi-asserted-by":"publisher","DOI":"10.1016\/j.injury.2014.12.031"},{"key":"e_1_3_6_6_2","doi-asserted-by":"publisher","DOI":"10.1097\/BOT.0b013e318214f321"},{"key":"e_1_3_6_7_2","doi-asserted-by":"publisher","DOI":"10.1097\/MD.0000000000044490"},{"key":"e_1_3_6_8_2","doi-asserted-by":"publisher","DOI":"10.1186\/s13018-025-05822-z"},{"key":"e_1_3_6_9_2","doi-asserted-by":"publisher","DOI":"10.1097\/BOT.0000000000002828"},{"issue":"6","key":"e_1_3_6_10_2","first-page":"1517","article-title":"Multiple cannulated screw fixation of young femoral neck fractures","volume":"31","author":"Kim JY","year":"2015","unstructured":"Kim JY, Kong GM, Park DH, et al. Multiple cannulated screw fixation of young femoral neck fractures. J Med Sci 2015; 31(6): 1517\u20131520.","journal-title":"J Med Sci"},{"key":"e_1_3_6_11_2","doi-asserted-by":"publisher","DOI":"10.1097\/BOT.0000000000000739"},{"key":"e_1_3_6_12_2","doi-asserted-by":"publisher","DOI":"10.1016\/j.injury.2021.11.016"},{"key":"e_1_3_6_13_2","doi-asserted-by":"publisher","DOI":"10.3390\/jpm11101017"},{"issue":"2","key":"e_1_3_6_14_2","first-page":"233","article-title":"The addition of an anti-rotation screw to the dynamic hip screw","volume":"86","author":"Voeten S","year":"2020","unstructured":"Voeten S, Deunk J, Vermeulen J, et al. The addition of an anti-rotation screw to the dynamic hip screw. 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