{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,8,4]],"date-time":"2026-08-04T10:46:26Z","timestamp":1785840386882,"version":"3.56.0"},"reference-count":25,"publisher":"Wiley","issue":"8","license":[{"start":{"date-parts":[[2025,6,17]],"date-time":"2025-06-17T00:00:00Z","timestamp":1750118400000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by-nc-nd\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100005089","name":"Natural Science Foundation of Beijing Municipality","doi-asserted-by":"publisher","award":["L234011"],"award-info":[{"award-number":["L234011"]}],"id":[{"id":"10.13039\/501100005089","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100001809","name":"National Natural Science Foundation of China","doi-asserted-by":"publisher","award":["U22A20355"],"award-info":[{"award-number":["U22A20355"]}],"id":[{"id":"10.13039\/501100001809","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Orthopaedic Surgery"],"published-print":{"date-parts":[[2025,8]]},"abstract":"<jats:title>ABSTRACT<\/jats:title><jats:sec><jats:title>Background<\/jats:title><jats:p>S\u2010ROM prosthesis, one well\u2010used femoral prosthesis in the patients with developmental dysplasia of the hip (DDH), has a skipping size of the distal stem diameter. The purpose of this study was to investigate whether its 2\u2010mm incremental diameter could meet clinical needs for high\u2010riding DDH patients.<\/jats:p><\/jats:sec><jats:sec><jats:title>Methods<\/jats:title><jats:p>Between July 2018 and December 2022, the Hartofilakidis type C DDH patients with S\u2010ROM stem (9 or 11\u2009mm) were retrospectively enrolled according to the inclusion criteria and exclusion criteria in our institute. The intraoperative femur fractures, the diameter of the femoral medullary cavity, the canal filling ratio of the S\u2010ROM stem, the closure conditions of the stem slot, and the healing rate of subtrochanteric osteotomy were analyzed to evaluate the effect of stem design on clinical outcomes. Statistical analyses were conducted using independent samples <jats:italic>t<\/jats:italic>\u2010tests, chi\u2010square test, and logistic regression analysis with a significance threshold of <jats:italic>p<\/jats:italic>\u2009&lt;\u20090.05.<\/jats:p><\/jats:sec><jats:sec><jats:title>Results<\/jats:title><jats:p>A total of 95 patients (109 hips) were included in this study, including 60 hips with 9\u2009mm\u2009S\u2010ROM and 49 hips with 11\u2009mm\u2009S\u2010ROM. Compared with the 9\u2009mm\u2009S\u2010ROM group, the 11\u2009mm\u2009S\u2010ROM group presented nearly 5 times the intraoperative fracture rate (16.3%, 3.3%, <jats:italic>p<\/jats:italic>\u2009&lt;\u20090.05). The mean diameter of the femoral medullary cavity in the 9\u2009mm\u2009S\u2010ROM group was 0.84\u2009\u00b1\u20090.20\u2009mm and in the 11\u2009mm\u2009S\u2010ROM group was 1.03\u2009\u00b1\u20090.18\u2009mm. The canal filling ratio in the 9\u2009mm\u2009S\u2010ROM group is significantly lower than that of the 11\u2009mm\u2009S\u2010ROM group. In the 11\u2009mm\u2009S\u2010ROM group, the filling ratio of the femoral medullary cavity of fracture hips was significantly higher than that in non\u2010fracture hips.<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusion<\/jats:title><jats:p>The S\u2010ROM design with a distal stem diameter increment of every 2\u2009mm would increase the risk of intraoperative periprosthetic femoral fractures in high\u2010riding DDH patients. It is necessary for a 1\u2010mm increment of distal stem diameter in such patients.<\/jats:p><\/jats:sec><jats:sec><jats:title>Level of Evidence<\/jats:title><jats:p>Level III, retrospective comparative study.<\/jats:p><\/jats:sec>","DOI":"10.1111\/os.70092","type":"journal-article","created":{"date-parts":[[2025,6,29]],"date-time":"2025-06-29T10:02:55Z","timestamp":1751191375000},"page":"2313-2320","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":1,"title":["Modular Femoral Stem for Hartofilakidis Type C Hip Dysplasia: Is It Necessary for 1\u2010mm Increment of Distal Stem Diameter?"],"prefix":"10.1111","volume":"17","author":[{"given":"Jiafeng","family":"Yi","sequence":"first","affiliation":[{"name":"School of Medicine Nankai University  Tianjin China"},{"name":"Senior Department of Orthopedics The Fourth Medical Center of PLA General Hospital  Beijing China"},{"name":"National Clinical Research Center for Orthopedics, Sports Medicine &amp; Rehabilitation  Beijing China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Hongbin","family":"Xie","sequence":"additional","affiliation":[{"name":"School of Medicine Nankai University  Tianjin China"},{"name":"Senior Department of Orthopedics The Fourth Medical Center of PLA General Hospital  Beijing China"},{"name":"National Clinical Research Center for Orthopedics, Sports Medicine &amp; Rehabilitation  Beijing China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Yubo","family":"Liu","sequence":"additional","affiliation":[{"name":"School of Medicine Nankai University  Tianjin China"},{"name":"Senior Department of Orthopedics The Fourth Medical Center of PLA General Hospital  Beijing China"},{"name":"National Clinical Research Center for Orthopedics, Sports Medicine &amp; Rehabilitation  Beijing China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Yijian","family":"Huang","sequence":"additional","affiliation":[{"name":"Senior Department of Orthopedics The Fourth Medical Center of PLA General Hospital  Beijing China"},{"name":"National Clinical Research Center for Orthopedics, Sports Medicine &amp; Rehabilitation  Beijing China"},{"name":"Medical School of Chinese PLA  Beijing China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Wei","family":"Chai","sequence":"additional","affiliation":[{"name":"Senior Department of Orthopedics The Fourth Medical Center of PLA General Hospital  Beijing China"},{"name":"National Clinical Research Center for Orthopedics, Sports Medicine &amp; Rehabilitation  Beijing China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Xiangpeng","family":"Kong","sequence":"additional","affiliation":[{"name":"Senior Department of Orthopedics The Fourth Medical Center of PLA General Hospital  Beijing China"},{"name":"National Clinical Research Center for Orthopedics, Sports Medicine &amp; Rehabilitation  Beijing China"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","published-online":{"date-parts":[[2025,6,17]]},"reference":[{"key":"e_1_2_10_2_1","doi-asserted-by":"publisher","DOI":"10.1111\/os.12099"},{"key":"e_1_2_10_3_1","first-page":"147","article-title":"The S\u2010ROM Modular Femoral Stem in Dysplasia of the Hip","volume":"28","author":"Mattingly D. A.","year":"2005","journal-title":"Orthopedics"},{"key":"e_1_2_10_4_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.arth.2007.12.016"},{"key":"e_1_2_10_5_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.arth.2021.05.004"},{"key":"e_1_2_10_6_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.arth.2016.11.005"},{"key":"e_1_2_10_7_1","doi-asserted-by":"publisher","DOI":"10.1302\/0301-620X.96B11.33698"},{"key":"e_1_2_10_8_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.ijsu.2021.106165"},{"key":"e_1_2_10_9_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.arth.2016.01.016"},{"key":"e_1_2_10_10_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.jor.2025.03.027"},{"key":"e_1_2_10_11_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.arth.2015.04.031"},{"issue":"6","key":"e_1_2_10_12_1","first-page":"506","article-title":"Total Hip Arthroplasty With Modular Stem for Dysplastic Hips in South Asian Population","volume":"7","author":"Gautam D.","year":"2019","journal-title":"Archives of Bone and Joint Surgery"},{"key":"e_1_2_10_13_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.arth.2015.10.011"},{"key":"e_1_2_10_14_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.artd.2017.07.003"},{"key":"e_1_2_10_15_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.arth.2024.08.026"},{"key":"e_1_2_10_16_1","doi-asserted-by":"publisher","DOI":"10.1111\/os.13133"},{"key":"e_1_2_10_17_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.arth.2006.02.085"},{"key":"e_1_2_10_18_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.arth.2009.03.009"},{"key":"e_1_2_10_19_1","doi-asserted-by":"publisher","DOI":"10.1155\/2015\/690539"},{"key":"e_1_2_10_20_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.arth.2013.04.041"},{"key":"e_1_2_10_21_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.arth.2015.02.031"},{"key":"e_1_2_10_22_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.arth.2022.04.022"},{"key":"e_1_2_10_23_1","doi-asserted-by":"publisher","DOI":"10.1302\/0301-620X.100B1.BJJ-2017-0569.R1"},{"key":"e_1_2_10_24_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.arth.2019.10.018"},{"key":"e_1_2_10_25_1","doi-asserted-by":"publisher","DOI":"10.1186\/s13018-020-02101-x"},{"key":"e_1_2_10_26_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.arth.2019.02.029"}],"container-title":["Orthopaedic Surgery"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/onlinelibrary.wiley.com\/doi\/pdf\/10.1111\/os.70092","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2025,8,11]],"date-time":"2025-08-11T10:04:26Z","timestamp":1754906666000},"score":1,"resource":{"primary":{"URL":"https:\/\/onlinelibrary.wiley.com\/doi\/10.1111\/os.70092"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2025,6,17]]},"references-count":25,"journal-issue":{"issue":"8","published-print":{"date-parts":[[2025,8]]}},"alternative-id":["10.1111\/os.70092"],"URL":"https:\/\/doi.org\/10.1111\/os.70092","archive":["Portico"],"relation":{},"ISSN":["1757-7853","1757-7861"],"issn-type":[{"value":"1757-7853","type":"print"},{"value":"1757-7861","type":"electronic"}],"subject":[],"published":{"date-parts":[[2025,6,17]]},"assertion":[{"value":"2024-12-31","order":0,"name":"received","label":"Received","group":{"name":"publication_history","label":"Publication History"}},{"value":"2025-05-25","order":2,"name":"accepted","label":"Accepted","group":{"name":"publication_history","label":"Publication History"}},{"value":"2025-06-17","order":3,"name":"published","label":"Published","group":{"name":"publication_history","label":"Publication History"}}]}}