{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,7,10]],"date-time":"2026-07-10T15:55:32Z","timestamp":1783698932384,"version":"3.55.0"},"reference-count":27,"publisher":"Wiley","issue":"1","license":[{"start":{"date-parts":[[2022,11,23]],"date-time":"2022-11-23T00:00:00Z","timestamp":1669161600000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by-nc-nd\/4.0\/"}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Orthopaedic Surgery"],"published-print":{"date-parts":[[2023,1]]},"abstract":"<jats:sec><jats:title>Objective<\/jats:title><jats:p>Valgus\u2010impacted femoral neck fractures with or without posterior tilt of the femoral head are very common and full of pitfalls in clinical practice, which may lead to femoral neck shortening (FNS) and avascular necrosis (AVN). The study tries to introduce a novel technical trick aiming at anatomical reduction of valgus\u2010impacted femoral neck fracture with minimally invasive procedure, and summarize the clinical prognosis in case series.<\/jats:p><\/jats:sec><jats:sec><jats:title>Methods<\/jats:title><jats:p>In this retrospective study, 24 patients (seven men and 17 women) with valgus\u2010impacted femoral neck fractures between May 2017 and July 2020 were managed by \u201cin\u2010out\u2010in\u201d percutaneous reduction technique (percutaneous reduction group). Another 24 cases (10 men and 14 women) suffering the fractures underwent <jats:italic>in situ<\/jats:italic> fixation were enrolled as control group for function comparison (<jats:italic>in situ<\/jats:italic> fixation group). All patients were followed up for 24\u201342\u00a0months. The clinical outcomes included complications after operations (<jats:italic>\u03c7<\/jats:italic><jats:sup>2<\/jats:sup> test) and Harris Hip Score (HHS) for hip function (unpaired <jats:italic>t<\/jats:italic> test) in the two groups. The radiographic outcomes were evaluated by collodiaphyseal angle, posterior tilt angle, and FNS before the operation and during the follow\u2010up in the percutaneous reduction group (unpaired <jats:italic>t<\/jats:italic> test).<\/jats:p><\/jats:sec><jats:sec><jats:title>Results<\/jats:title><jats:p>Patients' preoperative data, including age, sex, affected side, fracture types, and medical history, were similar between the two groups, respectively (<jats:italic>p<\/jats:italic>\u2009&gt;\u20090.05). After surgery, the mean HHS at 6, 12, and 24\u00a0months were all better in the percutaneous reduction group (76\u2009\u00b1\u20096.72, 85.34\u2009\u00b1\u20096.33 and 90.54\u2009\u00b1\u20095.81) than that in the <jats:italic>in situ<\/jats:italic> fixation group (70.86\u2009\u00b1\u20096.91, 80\u2009\u00b1\u20096.11 and 84.1\u2009\u00b1\u20097.82), respectively (<jats:italic>p<\/jats:italic>\u2009&lt;\u20090.05). One patient suffered fixation failure with screws retreat and one patient suffered AVN in the percutaneous reduction group. In the <jats:italic>in situ<\/jats:italic> fixation group, AVN occurred in two patients at last follow\u2010up. There was no significant difference in complication amounts between the two groups (<jats:italic>p<\/jats:italic>\u2009&gt;\u20090.05). In the percutaneous reduction group, collodiaphyseal angle, posterior tilt angle, and amount of FNS were significantly different between preoperative cases and immediately postoperative cases (<jats:italic>p<\/jats:italic>\u2009&lt;\u20090.05). However, there was no statistical difference of the measurements among postoperative cases at different time points (within 24\u00a0h, 6\u2009months, and 2\u2009years postoperatively) (<jats:italic>p<\/jats:italic>\u2009&gt;\u20090.05).<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusions<\/jats:title><jats:p>Our experience of the technique and the case series show that \u201cin\u2010out\u2010in\u201d percutaneous reduction technique for treatment of valgus\u2010impacted femoral neck fracture with or without posterior tilt of the femoral head is safe and effective for achieving successful bone union and satisfactory function.<\/jats:p><\/jats:sec>","DOI":"10.1111\/os.13582","type":"journal-article","created":{"date-parts":[[2022,11,24]],"date-time":"2022-11-24T13:04:38Z","timestamp":1669295078000},"page":"214-222","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":8,"title":["\u201cIn\u2010Out\u2010In\u201d Percutaneous Reduction Technique for Treatment of Valgus\u2010Impacted Femoral Neck Fractures: A Technical Trick and Case Series"],"prefix":"10.1111","volume":"15","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-2803-9842","authenticated-orcid":false,"given":"Tianming","family":"Yu","sequence":"first","affiliation":[{"name":"Department of Traumatic Orthopaedics Ningbo No. 6 Hospital  Zhejiang China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-7921-8613","authenticated-orcid":false,"given":"Jianlei","family":"Liu","sequence":"additional","affiliation":[{"name":"Department of Traumatic Orthopaedics Ningbo No. 6 Hospital  Zhejiang China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jichong","family":"Ying","sequence":"additional","affiliation":[{"name":"Department of Traumatic Orthopaedics Ningbo No. 6 Hospital  Zhejiang China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Yunqiang","family":"Zhuang","sequence":"additional","affiliation":[{"name":"Department of Traumatic Orthopaedics Ningbo No. 6 Hospital  Zhejiang 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