{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,7,23]],"date-time":"2026-07-23T14:17:57Z","timestamp":1784816277592,"version":"3.55.0"},"reference-count":23,"publisher":"Springer Science and Business Media LLC","issue":"5","license":[{"start":{"date-parts":[[2026,2,25]],"date-time":"2026-02-25T00:00:00Z","timestamp":1771977600000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/www.springernature.com\/gp\/researchers\/text-and-data-mining"},{"start":{"date-parts":[[2026,2,25]],"date-time":"2026-02-25T00:00:00Z","timestamp":1771977600000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/www.springernature.com\/gp\/researchers\/text-and-data-mining"}],"content-domain":{"domain":["link.springer.com"],"crossmark-restriction":false},"short-container-title":["International Orthopaedics (SICOT)"],"published-print":{"date-parts":[[2026,5]]},"DOI":"10.1007\/s00264-026-06759-6","type":"journal-article","created":{"date-parts":[[2026,2,25]],"date-time":"2026-02-25T01:27:49Z","timestamp":1771982869000},"page":"999-1007","update-policy":"https:\/\/doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":3,"title":["Bilateral curved intertrochanteric varus osteotomy for osteonecrosis of the femoral head: a retrospective comparative study"],"prefix":"10.1007","volume":"50","author":[{"given":"Kimihiro","family":"Oono","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Yusuke","family":"Osawa","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Hiroto","family":"Funahashi","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Hiroaki","family":"Ido","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Yasuhiko","family":"Takegami","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Shiro","family":"Imagama","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"297","published-online":{"date-parts":[[2026,2,25]]},"reference":[{"issue":"12","key":"6759_CR1","doi-asserted-by":"publisher","first-page":"1084","DOI":"10.2106\/JBJS.19.01271","volume":"102","author":"MA Mont","year":"2020","unstructured":"Mont MA, Salem HS, Piuzzi NS, Goodman SB, Jones LC (2020) Nontraumatic osteonecrosis of the femoral head: where do we stand today?: A 5-year update. J Bone Joint Surg Am 102(12):1084\u20131099","journal-title":"J Bone Joint Surg Am"},{"issue":"7","key":"6759_CR2","doi-asserted-by":"publisher","first-page":"1463","DOI":"10.1007\/s00264-018-3867-1","volume":"42","author":"Y Osawa","year":"2018","unstructured":"Osawa Y, Seki T, Takegami Y, Kasai T, Higuchi Y, Ishiguro N (2018) Do femoral head collapse and the contralateral condition affect patient-reported quality of life and referral pain in patients with osteonecrosis of the femoral head? Int Orthop 42(7):1463\u20131468","journal-title":"Int Orthop"},{"issue":"5","key":"6759_CR3","doi-asserted-by":"publisher","first-page":"479","DOI":"10.1080\/17453674.2016.1212180","volume":"87","author":"M Tsukanaka","year":"2016","unstructured":"Tsukanaka M, Halvorsen V, Nordsletten L, Enges\u00e6Ter I\u00d8, Enges\u00e6Ter LB, Marie Fenstad A, R\u00f6hrl SM (2016) Implant survival and radiographic outcome of total hip replacement in patients less than 20 years old. Acta Orthop 87(5):479\u2013484","journal-title":"Acta Orthop"},{"key":"6759_CR4","first-page":"381","volume":"20","author":"A Nishio","year":"1971","unstructured":"Nishio A, Sugioka Y (1971) A new technique of the varus osteotomy at the upper end of the femur. Orthop Trauma 20:381\u2013386","journal-title":"Orthop Trauma"},{"issue":"6","key":"6759_CR5","doi-asserted-by":"publisher","first-page":"781","DOI":"10.1302\/0301-620X.92B6.23621","volume":"92-B","author":"G Zhao","year":"2010","unstructured":"Zhao G, Yamamoto T, Ikemura S, Motomura G, Mawatari T, Nakashima Y, Iwamoto Y (2010) Radiological outcome analysis of transtrochanteric curved varus osteotomy for osteonecrosis of the femoral head at a mean follow-up of 12.4 years. J Bone Joint Surg Br 92-B(6):781\u2013786","journal-title":"J Bone Joint Surg Br"},{"issue":"3","key":"6759_CR6","doi-asserted-by":"publisher","first-page":"305","DOI":"10.1007\/s00402-013-1919-y","volume":"134","author":"M Hamanishi","year":"2014","unstructured":"Hamanishi M, Yasunaga Y, Yamasaki T, Mori R, Shoji T, Ochi M (2014) The clinical and radiographic results of intertrochanteric curved varus osteotomy for idiopathic osteonecrosis of the femoral head. Arch Orthop Trauma Surg 134(3):305\u2013310","journal-title":"Arch Orthop Trauma Surg"},{"issue":"6","key":"6759_CR7","doi-asserted-by":"publisher","first-page":"1600","DOI":"10.1016\/j.arth.2020.01.026","volume":"35","author":"Y Osawa","year":"2020","unstructured":"Osawa Y, Seki T, Okura T, Takegami Y, Ishiguro N, Hasegawa Y (2020) Curved intertrochanteric varus osteotomy vs total hip arthroplasty for osteonecrosis of the femoral head in patients under 50 years old. J Arthroplasty 35(6):1600\u20131605","journal-title":"J Arthroplasty"},{"issue":"12","key":"6759_CR8","doi-asserted-by":"publisher","first-page":"1647","DOI":"10.1007\/s00402-016-2563-0","volume":"136","author":"T Okura","year":"2016","unstructured":"Okura T, Hasegawa Y, Morita D, Osawa Y, Ishiguro N (2016) What factors predict the failure of curved intertrochanteric varus osteotomy for the osteonecrosis of the femoral head? Arch Orthop Trauma Surg 136(12):1647\u20131655","journal-title":"Arch Orthop Trauma Surg"},{"issue":"113","key":"6759_CR9","first-page":"31","volume":"22","author":"D Arbab","year":"2016","unstructured":"Arbab D, K\u00f6nig DP (2016) Atraumatic Femoral Head Necrosis in Adults Epidemiology, Etiology. Diagnosis and Treatment Deutsches \u00c4rzteblatt International 22(113):31\u201338","journal-title":"Diagnosis and Treatment Deutsches \u00c4rzteblatt International"},{"key":"6759_CR10","doi-asserted-by":"publisher","first-page":"1347","DOI":"10.1007\/s00264-015-3079-x","volume":"40","author":"JP Hauzeur","year":"2016","unstructured":"Hauzeur JP, Malaise M, de Maertelaer V (2016) A prospective cohort study of the clinical presentation of non-traumatic osteonecrosis of the femoral head: spine and knee symptoms as clinical presentation of hip osteonecrosis. Int Orthop 40:1347\u20131351","journal-title":"Int Orthop"},{"issue":"4","key":"6759_CR11","doi-asserted-by":"publisher","first-page":"421","DOI":"10.1016\/j.arth.2004.09.062","volume":"20","author":"ME Berend","year":"2005","unstructured":"Berend ME, Ritter MA, Harty LD, Davis KE, Keating EM, Meding JB, Thong AE (2005) Simultaneous bilateral versus unilateral total hip arthroplasty: an outcomes analysis. J Arthroplasty 20(4):421\u2013426","journal-title":"J Arthroplasty"},{"issue":"4","key":"6759_CR12","doi-asserted-by":"publisher","first-page":"665","DOI":"10.1302\/0301-620X.103B4.BJJ-2020-1107.R1","volume":"103-B","author":"Y Osawa","year":"2021","unstructured":"Osawa Y, Seki T, Okura T, Takegami Y, Ishiguro N, Hasegawa Y (2021) Long-term outcomes of curved intertrochanteric varus osteotomy combined with bone impaction grafting for non-traumatic osteonecrosis of the femoral head. Bone Joint J 103-B(4):665\u2013671","journal-title":"Bone Joint J"},{"issue":"5","key":"6759_CR13","doi-asserted-by":"publisher","first-page":"601","DOI":"10.1007\/s007760200108","volume":"7","author":"N Sugano","year":"2002","unstructured":"Sugano N, Atsumi T, Ohzono K, Kubo T, Hotokebuchi T, Takaoka K (2002) The 2001 revised criteria for diagnosis, classification, and staging of idiopathic osteonecrosis of the femoral head. J Orthop Sci 7(5):601\u2013605","journal-title":"J Orthop Sci"},{"key":"6759_CR14","doi-asserted-by":"publisher","first-page":"191","DOI":"10.1097\/00003086-197801000-00019","volume":"130","author":"Y Sugioka","year":"1978","unstructured":"Sugioka Y (1978) Transtrochanteric anterior rotational osteotomy of the femoral head in the treatment of osteonecrosis affecting the hip: a new osteotomy operation. Clin Orthop Relat Res 130:191\u2013201","journal-title":"Clin Orthop Relat Res"},{"key":"6759_CR15","doi-asserted-by":"publisher","first-page":"111","DOI":"10.1097\/00003086-199204000-00013","volume":"277","author":"Y Sugioka","year":"1992","unstructured":"Sugioka Y, Hotokebuchi T, Tsutsui H (1992) Transtrochanteric anterior rotational osteotomy for idiopathic and steroid-induced necrosis of the femoral head: indications and long-term results. Clin Orthop Relat Res 277:111\u2013120","journal-title":"Clin Orthop Relat Res"},{"key":"6759_CR16","doi-asserted-by":"publisher","first-page":"512","DOI":"10.1302\/0301-620X.82B4.0820512","volume":"82","author":"K Miyanishi","year":"2000","unstructured":"Miyanishi K, Noguchi Y, Yamamoto T, Irisa T, Suenaga E, Jingushi S, Sugioka Y, Iwamoto Y (2000) Prediction of the outcome of transtrochanteric rotational osteotomy for osteonecrosis of the femoral head. J Bone Joint Surg Br 82:512\u2013516","journal-title":"J Bone Joint Surg Br"},{"issue":"10","key":"6759_CR17","doi-asserted-by":"publisher","first-page":"817","DOI":"10.1136\/ard.59.10.817","volume":"59","author":"P Hernigou","year":"2000","unstructured":"Hernigou P, Lambotte JC (2000) Bilateral hip osteonecrosis: influence of hip size on outcome. Ann Rheum Dis 59(10):817\u2013821","journal-title":"Ann Rheum Dis"},{"issue":"12","key":"6759_CR18","doi-asserted-by":"publisher","first-page":"3839","DOI":"10.1016\/j.arth.2021.08.005","volume":"36","author":"Y Osawa","year":"2021","unstructured":"Osawa Y, Seki T, Takegami Y, Makida K, Ochiai S, Imagama S (2021) Collapse progression or cessation affects the natural history of contralateral osteonecrosis of the femoral head. J Arthroplasty 36(12):3839\u20133844","journal-title":"J Arthroplasty"},{"issue":"10S1","key":"6759_CR19","doi-asserted-by":"publisher","first-page":"S136","DOI":"10.1016\/j.arth.2025.06.066","volume":"40","author":"Y Uesugi","year":"2025","unstructured":"Uesugi Y, Sakai T, Ando W, Nakamura J, Takahashi D, Sugano N, QOL Working Group (2025) A five-year longitudinal assessment of quality of life and employment status in patients who have osteonecrosis of the femoral head undergoing femoral osteotomy: a multicenter study. J Arthroplasty 40(10S1):S136\u2013S145","journal-title":"J Arthroplasty"},{"issue":"5","key":"6759_CR20","doi-asserted-by":"publisher","first-page":"851","DOI":"10.1111\/os.13213","volume":"14","author":"QR Wang","year":"2022","unstructured":"Wang QR, An JJ, Zhang WL, Yang ZY, Zhao X, Kang PD (2022) Core decompression prevents progression of asymptomatic type C osteonecrosis of femoral head according to the Japanese Investigation Committee Classification: a retrospective study. Orthop Surg 14(5):851\u2013859","journal-title":"Orthop Surg"},{"issue":"7","key":"6759_CR21","doi-asserted-by":"publisher","first-page":"1639","DOI":"10.1007\/s00264-018-3941-8","volume":"42","author":"P Hernigou","year":"2018","unstructured":"Hernigou P, Dubory A, Homma Y, Guissou I, Flouzat Lachaniette CH, Chevallier N, Rouard H (2018) Cell therapy versus simultaneous contralateral decompression in symptomatic corticosteroid osteonecrosis: a thirty year follow-up prospective randomized study of one hundred and twenty five adult patients. Int Orthop 42(7):1639\u20131649","journal-title":"Int Orthop"},{"issue":"2","key":"6759_CR22","doi-asserted-by":"publisher","first-page":"137","DOI":"10.4055\/cios.2019.11.2.137","volume":"11","author":"YK Lee","year":"2019","unstructured":"Lee YK, Lee B, Parvizi J, Ha YC, Koo KH (2019) Which osteotomy for osteonecrosis of the femoral head and which patient for the osteotomy? Clin Orthop Surg 11(2):137\u2013141","journal-title":"Clin Orthop Surg"},{"issue":"10","key":"6759_CR23","doi-asserted-by":"publisher","first-page":"1320","DOI":"10.1302\/0301-620X.100B10.BJJ-2017-1441.R2","volume":"100","author":"D Metcalfe","year":"2018","unstructured":"Metcalfe D, Peterson N, Wilkinson JM, Perry DC (2018) Temporal trends and survivorship of total hip arthroplasty in very young patients: a study using the National Joint Registry data set. Bone Joint J 100(10):1320\u20131329","journal-title":"Bone Joint J"}],"container-title":["International Orthopaedics"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/link.springer.com\/content\/pdf\/10.1007\/s00264-026-06759-6.pdf","content-type":"application\/pdf","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/link.springer.com\/article\/10.1007\/s00264-026-06759-6","content-type":"text\/html","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/link.springer.com\/content\/pdf\/10.1007\/s00264-026-06759-6.pdf","content-type":"application\/pdf","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2026,5,16]],"date-time":"2026-05-16T04:00:29Z","timestamp":1778904029000},"score":1,"resource":{"primary":{"URL":"https:\/\/link.springer.com\/10.1007\/s00264-026-06759-6"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2026,2,25]]},"references-count":23,"journal-issue":{"issue":"5","published-print":{"date-parts":[[2026,5]]}},"alternative-id":["6759"],"URL":"https:\/\/doi.org\/10.1007\/s00264-026-06759-6","relation":{},"ISSN":["0341-2695","1432-5195"],"issn-type":[{"value":"0341-2695","type":"print"},{"value":"1432-5195","type":"electronic"}],"subject":[],"published":{"date-parts":[[2026,2,25]]},"assertion":[{"value":"7 January 2026","order":1,"name":"received","label":"Received","group":{"name":"ArticleHistory","label":"Article History"}},{"value":"17 February 2026","order":2,"name":"accepted","label":"Accepted","group":{"name":"ArticleHistory","label":"Article History"}},{"value":"25 February 2026","order":3,"name":"first_online","label":"First Online","group":{"name":"ArticleHistory","label":"Article History"}},{"order":1,"name":"Ethics","group":{"name":"EthicsHeading","label":"Declarations"}},{"value":"The study was approved by the institutional review board, and it conforms to the provisions of the Declaration of Helsinki.","order":2,"name":"Ethics","group":{"name":"EthicsHeading","label":"Ethics approval"}},{"value":"The authors declare no competing interests.","order":3,"name":"Ethics","group":{"name":"EthicsHeading","label":"Competing interests"}}]}}