{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,25]],"date-time":"2026-09-25T14:46:57Z","timestamp":1790347617229,"version":"4.1.0"},"reference-count":19,"publisher":"Ovid Technologies (Wolters Kluwer Health)","issue":"8","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":[],"published-print":{"date-parts":[[2017,8]]},"abstract":"<jats:sec>\n            <jats:title>Objectives:<\/jats:title>\n            <jats:p>To analyze the radiographic outcomes of intertrochanteric osteotomy for the treatment of femoral neck nonunion with \u201cundercorrection\u201d of the Pauwels angle and relative preservation of the proximal femoral anatomy.<\/jats:p>\n          <\/jats:sec>\n          <jats:sec>\n            <jats:title>Design:<\/jats:title>\n            <jats:p>Retrospective cohort study.<\/jats:p>\n          <\/jats:sec>\n          <jats:sec>\n            <jats:title>Setting:<\/jats:title>\n            <jats:p>Level-1 trauma center.<\/jats:p>\n          <\/jats:sec>\n          <jats:sec>\n            <jats:title>Patients:<\/jats:title>\n            <jats:p>Thirty-two patients with established femoral neck nonunions that had been treated with intertrochanteric osteotomy were retrospectively identified through Current Procedural Terminology codes. Seven patients were treated with 30 degree closing wedge osteotomy and 25 with a 20 degree or smaller osteotomy.<\/jats:p>\n          <\/jats:sec>\n          <jats:sec>\n            <jats:title>Intervention:<\/jats:title>\n            <jats:p>Valgus-producing intertrochanteric osteotomy with a blade plate.<\/jats:p>\n          <\/jats:sec>\n          <jats:sec>\n            <jats:title>Main Outcome Measurements:<\/jats:title>\n            <jats:p>Femoral neck and intertrochanteric osteotomy osseous union.<\/jats:p>\n          <\/jats:sec>\n          <jats:sec>\n            <jats:title>Results:<\/jats:title>\n            <jats:p>Thirty-one of 32 patients (97%) went on to osseous union of the femoral neck and all intertrochanteric osteotomies healed. There was no significant difference in the rate of union of the femoral neck between those patients treated with 30 versus 20 degree or less osteotomies. After osteotomy, the mean Pauwels angle decreased from 71 degrees (range 52\u201395 degrees) to 47 degrees (range 23\u201367 degrees) and the mean proximal femoral offset decreased by 11 mm (range 0\u201323 mm). Seven patients developed radiographic signs of avascular necrosis after osteotomy (22%). Three patients of these patients were converted to total hip arthroplasty (9%). Patients treated with a 30 degree osteotomy were more likely to develop avascular necrosis (67% vs. 12%, <jats:italic toggle=\"yes\">P<\/jats:italic>-value = 0.014).<\/jats:p>\n          <\/jats:sec>\n          <jats:sec>\n            <jats:title>Conclusions:<\/jats:title>\n            <jats:p>Valgus-producing intertrochanteric osteotomy with a smaller degree of correction than has been traditionally described leads to an excellent rate of radiographic union while preserving more of the native proximal femoral anatomy.<\/jats:p>\n          <\/jats:sec>\n          <jats:sec>\n            <jats:title>Level of Evidence:<\/jats:title>\n            <jats:p>Therapeutic Level III. See Instructions for Authors for a complete description of levels of evidence.<\/jats:p>\n          <\/jats:sec>","DOI":"10.1097\/bot.0000000000000869","type":"journal-article","created":{"date-parts":[[2017,4,21]],"date-time":"2017-04-21T07:13:08Z","timestamp":1492758788000},"page":"420-426","source":"Crossref","is-referenced-by-count":19,"title":["Intertrochanteric Osteotomy for Femoral Neck Nonunion: Does \u201cUndercorrection\u201d Result in an Acceptable Rate of Femoral Neck Union?"],"prefix":"10.1097","volume":"31","author":[{"given":"Brandon J.","family":"Yuan","sequence":"first","affiliation":[{"name":"Department of Orthopedic Surgery, Mayo Clinic, Rochester, MN;"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"David W.","family":"Shearer","sequence":"additional","affiliation":[{"name":"Department of Orthopaedic Surgery, University of California, San Francisco, CA; and"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"David P.","family":"Barei","sequence":"additional","affiliation":[{"name":"Department of Orthopaedics and Sports Medicine, Harborview Medical Center, Seattle, WA."}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Sean E.","family":"Nork","sequence":"additional","affiliation":[{"name":"Department of Orthopaedics and Sports Medicine, Harborview Medical Center, Seattle, WA."}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"276","reference":[{"key":"R1-20230828","doi-asserted-by":"crossref","first-page":"183","DOI":"10.1302\/0301-620X.53B2.183","article-title":"Malreduction and avascular necrosis in subcapital fractures of the femur","volume":"53","author":"Garden","year":"1971","journal-title":"J Bone Joint Surg Br."},{"key":"R2-20230828","doi-asserted-by":"crossref","first-page":"837","DOI":"10.2106\/00004623-198466060-00003","article-title":"Fractures of the femoral neck in patients between the ages of twelve and forty-nine 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