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The results of managing subtrochanteric fractures after multiple failed procedures have rarely been reported in the literature. This study aims to evaluate the effect of valgus reduction on non-united subtrochanteric fractures with single or multiple failed revision surgeries.<\/jats:p>\n              <\/jats:sec><jats:sec>\n                <jats:title>Methods<\/jats:title>\n                <jats:p>Twenty-six patients with aseptic subtrochanteric fracture non-union underwent failed single or multiple revision procedures after index fracture fixation surgery between 2011 and 2019. The exclusion criteria were as follows: septic non-union, peri-prosthetic, and pathological fractures. Lateral-based wedge valgus reduction and compression at the non-union site using a valgus-contoured DCS together with decortication, debridement, and bone grafting were used. The main outcome measurement was radiological union, pain, LLD, HHS, and restoration of pre-fracture activities.<\/jats:p>\n              <\/jats:sec><jats:sec>\n                <jats:title>Results<\/jats:title>\n                <jats:p>The mean follow-up was 4.5\u00a0years (range 3 to 7); prior revision surgeries range from two to five and union at 6.5\u00a0months (range 3 to 10) and the delayed union in one case and an infected non-union in one case. The mean LLD was 4\u00a0cm (range 3 to 5), which improved to 1.5\u00a0cm (range 1 to 4) (<jats:italic>P<\/jats:italic>-value\u2009&lt;\u20090.001). The mean VAS was 7 (range 6 to 8), and 24 patients achieved painless ambulation without a walking aid after the union. The mean HHS was 40 (range 25 to 65), which improved to 85 (range 55 to 95) (<jats:italic>P<\/jats:italic>-value\u2009&lt;\u2009001), achieving 15 excellent, ten good, and one poor results.<\/jats:p>\n              <\/jats:sec><jats:sec>\n                <jats:title>Conclusion<\/jats:title>\n                <jats:p>Mechanical optimisation by lateral closing wedge and stable fixation with pre-contoured DCS with biological\u00a0enhancement resulted in a successful outcome in recalcitrant subtrochanteric non-unions.<\/jats:p>\n              <\/jats:sec>","DOI":"10.1007\/s00264-023-06085-1","type":"journal-article","created":{"date-parts":[[2024,1,16]],"date-time":"2024-01-16T08:04:24Z","timestamp":1705392264000},"page":"1105-1111","update-policy":"https:\/\/doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":4,"title":["The effect of valgus reduction on resistant subtrochanteric femoral non-unions: a single-centre report of twenty six cases"],"prefix":"10.1007","volume":"48","author":[{"given":"Barakat","family":"El-Alfy","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-7604-649X","authenticated-orcid":false,"given":"Alaa","family":"Abououf","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Ahmed","family":"Darweash","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Salam","family":"Fawzy","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"297","published-online":{"date-parts":[[2024,1,16]]},"reference":[{"issue":"3","key":"6085_CR1","doi-asserted-by":"publisher","first-page":"297","DOI":"10.1002\/JOR.1100020312","volume":"2","author":"F Tencer","year":"1984","unstructured":"Tencer F, Johnson KD, Johnston DWC, Gill K (1984) A biomechanical comparison of various methods of stabilization of subtrochanteric fractures of the femur. 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