{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,8,26]],"date-time":"2026-08-26T14:42:24Z","timestamp":1787755344845,"version":"build-2784847793"},"reference-count":22,"publisher":"Ovid Technologies (Wolters Kluwer Health)","issue":"2","content-domain":{"domain":["lww.com","ovid.com"],"crossmark-restriction":true},"short-container-title":[],"abstract":"<jats:sec>\n                    <jats:title>Case:<\/jats:title>\n                    <jats:p>A 15-year-old adolescent boy had severe groin pain because of extensive osteonecrosis of the femoral head with collapse, joint space narrowing, and nonunion after a failed internal fixation for femoral neck fracture. We performed a 60\u00b0 valgus osteotomy that moved the posteromedial small viable portion of the femoral head to the weight-bearing acetabular area. The femoral neck nonunion and the necrosis healed completely, and the spherical contour of the femoral head was regained after postoperative hip joint remodeling.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Conclusions:<\/jats:title>\n                    <jats:p>Good remodeling and congruency were achieved by performing high-degree valgus osteotomy to obtain sufficient viable area below the acetabular roof.<\/jats:p>\n                  <\/jats:sec>","DOI":"10.2106\/jbjs.cc.23.00051","type":"journal-article","created":{"date-parts":[[2023,5,19]],"date-time":"2023-05-19T14:02:18Z","timestamp":1684504938000},"update-policy":"https:\/\/doi.org\/10.1097\/lww.0000000000001000","source":"Crossref","is-referenced-by-count":0,"title":["High-Degree Valgus Osteotomy for Severe Femoral Head Osteonecrosis After Femoral Neck Fracture with Nonunion"],"prefix":"10.2106","volume":"13","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-3501-363X","authenticated-orcid":false,"given":"Masanori","family":"Nishi","sequence":"first","affiliation":[{"name":"Department of Orthopaedic Surgery, Showa University School of Medicine, Shinagawa-ku, Tokyo, Japan"},{"name":"Department of Orthopaedic Surgery, Sassa General Hospital, Nishitokyo-shi, Tokyo, Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Takashi","family":"Atsumi","sequence":"additional","affiliation":[{"name":"Department of Orthopaedic Surgery, Showa University School of Medicine, Shinagawa-ku, Tokyo, Japan"},{"name":"Department of Orthopaedic Surgery, Sassa General Hospital, Nishitokyo-shi, Tokyo, Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Yasushi","family":"Yoshikawa","sequence":"additional","affiliation":[{"name":"Department of Orthopaedic Surgery, Showa University School of Medicine, Shinagawa-ku, Tokyo, Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Ryosuke","family":"Nakanishi","sequence":"additional","affiliation":[{"name":"Department of Orthopaedic Surgery, National Hospital Organization Shizuoka Medical Center, Sunto-gun, Shimizu-cho, Shizuoka, Japan"},{"name":"Department of Orthopaedic Surgery, Showa University Fujigaoka Hospital, Yokohama City, Kanagawa, Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Tsubasa","family":"Ishikawa","sequence":"additional","affiliation":[{"name":"Department of Orthopaedic Surgery, Showa University Fujigaoka Hospital, Yokohama City, Kanagawa, Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Yuki","family":"Usui","sequence":"additional","affiliation":[{"name":"Department of Orthopaedic Surgery, Showa University School of Medicine, Shinagawa-ku, Tokyo, Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-2987-9894","authenticated-orcid":false,"given":"Katsunori","family":"Inagaki","sequence":"additional","affiliation":[{"name":"Department of Orthopaedic Surgery, Showa University School of Medicine, Shinagawa-ku, Tokyo, Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"276","published-online":{"date-parts":[[2023,4]]},"reference":[{"issue":"3","key":"bib2-20240805","doi-asserted-by":"crossref","first-page":"484","DOI":"10.1016\/j.injury.2014.10.010","article-title":"Complications following young femoral neck fractures","volume":"46","author":"Slobogean","year":"2015","journal-title":"Injury."},{"issue":"1","key":"bib3-20240805","doi-asserted-by":"crossref","first-page":"15","DOI":"10.2106\/00004623-199401000-00003","article-title":"Outcomes after displaced fractures of the femoral neck. 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