{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,8,17]],"date-time":"2026-08-17T12:25:15Z","timestamp":1786969515748,"version":"build-2736575974"},"reference-count":37,"publisher":"Wiley","license":[{"start":{"date-parts":[[2026,8,17]],"date-time":"2026-08-17T00:00:00Z","timestamp":1786924800000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by\/4.0\/"},{"start":{"date-parts":[[2026,8,17]],"date-time":"2026-08-17T00:00:00Z","timestamp":1786924800000},"content-version":"tdm","delay-in-days":0,"URL":"http:\/\/doi.wiley.com\/10.1002\/tdm_license_1.1"}],"content-domain":{"domain":["esskajournals.onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Knee surg. sports traumatol. arthrosc."],"abstract":"<jats:title>Abstract<\/jats:title>\n                  <jats:sec>\n                    <jats:title>Purpose<\/jats:title>\n                    <jats:p>Introduction of new components in total knee arthroplasty (TKA) should be assessed for long\u2010term stability. The primary objective was to determine whether migration of a new cementless tibial baseplate in kinematically aligned (KA) TKA is below the 6\u2010month threshold where baseplates have a low incidence of long\u2010term loosening. Other objectives were to determine when stability occurred, whether stability was associated with varus angles in knee and limb alignments, and whether a recut of the tibia affected migration.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Methods<\/jats:title>\n                    <jats:p>\n                      New cementless components were implanted in 45 patients, of which 38% had a tibial recut. Baseplate migration was assessed using model\u2010based radiostereometric analysis with radiographs obtained post\u2010operatively and at 6 weeks, 3 months and 6 months. Mean maximum total point motion (MTPM) at 6 months was compared to a 6\u2010month threshold where baseplates have low incidence of long\u2010term loosening. An equivalence analysis determined when stability occurred. Correlation analyses related MTPM at 6 months to the medial proximal tibial angle (MPTA) and the hip\u2013knee\u2013ankle angle (HKAA). A two\u2010sample\n                      <jats:italic>t<\/jats:italic>\n                      test determined whether mean MTPM differed between recut and non\u2010recut groups.\n                    <\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Results<\/jats:title>\n                    <jats:p>\n                      Mean 6\u2010month MTPM of 0.93\u2009mm was significantly below the 6\u2010month stability threshold of 1.15\u2009mm (\n                      <jats:italic>p<\/jats:italic>\n                      \u2009=\u20090.015), and stability was achieved by 3 months. There was no significant relationship between MTPM and MPTA (\n                      <jats:italic>\u03c1<\/jats:italic>\n                      \u2009=\u20090.050,\n                      <jats:italic>p<\/jats:italic>\n                      \u2009=\u20090.77) or HKAA (\n                      <jats:italic>\u03c1<\/jats:italic>\n                      \u2009=\u20090.060,\n                      <jats:italic>p<\/jats:italic>\n                      \u2009=\u20090.72). Mean MTPM did not differ between recut (0.85\u2009\u00b1\u20090.56\u2009mm) and non\u2010recut (0.97\u2009\u00b1\u20090.64\u2009mm) groups (\n                      <jats:italic>p<\/jats:italic>\n                      \u2009=\u20090.57).\n                    <\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Conclusion<\/jats:title>\n                    <jats:p>The new cementless tibial baseplate has migration significantly below the 6\u2010month threshold where baseplates have a low incidence of long\u2010term loosening and migration stabilizes early at 3 months. Varus alignment of the baseplate and the limb as well as tibial recuts were not associated with increased migration.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Level of Evidence<\/jats:title>\n                    <jats:p>N\/A.<\/jats:p>\n                  <\/jats:sec>","DOI":"10.1002\/ksa.70572","type":"journal-article","created":{"date-parts":[[2026,8,17]],"date-time":"2026-08-17T11:30:52Z","timestamp":1786966252000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["A new cementless tibial baseplate in kinematically aligned total knee arthroplasty has low migration and stabilizes at 3 months: A cohort study using radiostereometric analysis"],"prefix":"10.1002","author":[{"given":"Rubiana","family":"Monteiro","sequence":"first","affiliation":[{"name":"KinAlign Orthopaedics Sacramento California USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Ali","family":"Mohammadi","sequence":"additional","affiliation":[{"name":"Department of Biomedical Engineering University of California Davis Davis California USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Alexander J.","family":"Nedopil","sequence":"additional","affiliation":[{"name":"Department of Orthopaedic Surgery, Konig\u2010Ludwig\u2010Haus University of Wurzburg Wurzburg Germany"},{"name":"Institute for Orthopaedic Surgery and Research, College of Medicine California Northstate University Elk Grove California USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Stephen M.","family":"Howell","sequence":"additional","affiliation":[{"name":"Department of Biomedical Engineering University of California Davis Davis California USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-8305-4589","authenticated-orcid":false,"given":"Maury L.","family":"Hull","sequence":"additional","affiliation":[{"name":"Department of Biomedical Engineering University of California Davis Davis California USA"},{"name":"Institute for Orthopaedic Surgery and Research, College of Medicine California Northstate University Elk Grove California USA"},{"name":"Department of Mechanical Engineering University of California Davis Davis California USA"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","published-online":{"date-parts":[[2026,8,17]]},"reference":[{"key":"e_1_2_12_2_1","doi-asserted-by":"publisher","DOI":"10.52198\/25.STI.45.OS1859"},{"key":"e_1_2_12_3_1","doi-asserted-by":"publisher","DOI":"10.2106\/JBJS.24.00835"},{"key":"e_1_2_12_4_1","doi-asserted-by":"publisher","DOI":"10.1177\/0300060517732697"},{"key":"e_1_2_12_5_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.arth.2023.03.065"},{"key":"e_1_2_12_6_1","doi-asserted-by":"publisher","DOI":"10.1302\/0301-620X.99B12.BJJ-2016-1118.R2"},{"key":"e_1_2_12_7_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.knee.2021.02.002"},{"key":"e_1_2_12_8_1","doi-asserted-by":"publisher","DOI":"10.1186\/s40634-023-00671-3"},{"key":"e_1_2_12_9_1","doi-asserted-by":"publisher","DOI":"10.1002\/jor.25129"},{"key":"e_1_2_12_10_1","doi-asserted-by":"publisher","DOI":"10.1007\/s00264-024-06251-z"},{"key":"e_1_2_12_11_1","doi-asserted-by":"publisher","DOI":"10.1007\/s00167-018-4946-y"},{"key":"e_1_2_12_12_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.arth.2023.08.080"},{"key":"e_1_2_12_13_1","doi-asserted-by":"publisher","DOI":"10.1007\/s00167-022-06939-y"},{"key":"e_1_2_12_14_1","volume-title":"Implants for Surgery\u2014Roentgen stereophotogrammetric analysis for the assessment of migration of orthopaedic implants","author":"ISO16087","year":"2013"},{"key":"e_1_2_12_15_1","doi-asserted-by":"publisher","DOI":"10.1302\/0301-620X.105B2.BJJ-2022-0414.R1"},{"key":"e_1_2_12_16_1","doi-asserted-by":"publisher","DOI":"10.1302\/0301-620X.101B8.BJJ-2018-0755.R3"},{"key":"e_1_2_12_17_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.micron.2005.07.008"},{"key":"e_1_2_12_18_1","doi-asserted-by":"publisher","DOI":"10.3390\/jpm12071152"},{"key":"e_1_2_12_19_1","doi-asserted-by":"publisher","DOI":"10.1007\/s00264-017-3490-6"},{"key":"e_1_2_12_20_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.arth.2017.09.039"},{"key":"e_1_2_12_21_1","doi-asserted-by":"publisher","DOI":"10.1115\/1.4056802"},{"key":"e_1_2_12_22_1","doi-asserted-by":"publisher","DOI":"10.1007\/s00167-022-07171-4"},{"key":"e_1_2_12_23_1","doi-asserted-by":"publisher","DOI":"10.1115\/1.4054375"},{"key":"e_1_2_12_24_1","doi-asserted-by":"publisher","DOI":"10.2340\/17453674.2024.42489"},{"key":"e_1_2_12_25_1","doi-asserted-by":"publisher","DOI":"10.1007\/s00167-017-4788-z"},{"key":"e_1_2_12_26_1","doi-asserted-by":"publisher","DOI":"10.3109\/17453674.2012.747052"},{"key":"e_1_2_12_27_1","doi-asserted-by":"publisher","DOI":"10.2340\/17453674.2024.42574"},{"key":"e_1_2_12_28_1","doi-asserted-by":"publisher","DOI":"10.1007\/s00167-017-4670-z"},{"key":"e_1_2_12_29_1","doi-asserted-by":"publisher","DOI":"10.1302\/0301-620X.77B3.7744919"},{"key":"e_1_2_12_30_1","doi-asserted-by":"publisher","DOI":"10.3390\/bioengineering11090910"},{"key":"e_1_2_12_31_1","doi-asserted-by":"publisher","DOI":"10.1002\/jeo2.70234"},{"key":"e_1_2_12_32_1","doi-asserted-by":"publisher","DOI":"10.1302\/0301-620X.101B7.BJJ-2018-1466.R1"},{"key":"e_1_2_12_33_1","doi-asserted-by":"publisher","DOI":"10.1007\/s00167-017-4765-6"},{"key":"e_1_2_12_34_1","doi-asserted-by":"publisher","DOI":"10.3892\/etm.2021.10980"},{"key":"e_1_2_12_35_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.jcot.2024.102871"},{"key":"e_1_2_12_36_1","doi-asserted-by":"publisher","DOI":"10.1302\/0301-620X.103B1.BJJ-2020-0788.R1"},{"key":"e_1_2_12_37_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.knee.2021.05.011"},{"key":"e_1_2_12_38_1","doi-asserted-by":"publisher","DOI":"10.1053\/j.sart.2018.04.003"}],"container-title":["Knee Surgery, Sports Traumatology, Arthroscopy"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/esskajournals.onlinelibrary.wiley.com\/doi\/pdf\/10.1002\/ksa.70572","content-type":"application\/pdf","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/esskajournals.onlinelibrary.wiley.com\/doi\/full-xml\/10.1002\/ksa.70572","content-type":"application\/xml","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/esskajournals.onlinelibrary.wiley.com\/doi\/pdf\/10.1002\/ksa.70572","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2026,8,17]],"date-time":"2026-08-17T11:30:53Z","timestamp":1786966253000},"score":1,"resource":{"primary":{"URL":"https:\/\/esskajournals.onlinelibrary.wiley.com\/doi\/10.1002\/ksa.70572"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2026,8,17]]},"references-count":37,"alternative-id":["10.1002\/ksa.70572"],"URL":"https:\/\/doi.org\/10.1002\/ksa.70572","archive":["Portico"],"relation":{},"ISSN":["0942-2056","1433-7347"],"issn-type":[{"value":"0942-2056","type":"print"},{"value":"1433-7347","type":"electronic"}],"subject":[],"published":{"date-parts":[[2026,8,17]]},"assertion":[{"value":"2026-06-04","order":0,"name":"received","label":"Received","group":{"name":"publication_history","label":"Publication History"}},{"value":"2026-07-28","order":2,"name":"accepted","label":"Accepted","group":{"name":"publication_history","label":"Publication History"}},{"value":"2026-08-17","order":3,"name":"published","label":"Published","group":{"name":"publication_history","label":"Publication History"}}],"article-number":"ksa.70572"}}