{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,7,11]],"date-time":"2026-07-11T18:37:42Z","timestamp":1783795062828,"version":"3.55.0"},"reference-count":28,"publisher":"Georg Thieme Verlag KG","issue":"04","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["J Knee Surg"],"published-print":{"date-parts":[[2022,3]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:p>Recent literature has implicated a thick cobalt chromium baseplate as a potential source of stress shielding and medial tibial bone resorption after total knee arthroplasty (TKA) in a Western population. The purpose was to calculate the incidence of various types and severity of medial tibial bone resorption utilizing a novel classification system after TKA with a thick cobalt chromium baseplate in Asian patients. Five hundred TKAs using Attune prostheses with mean follow-up of 3.4 years were evaluated, using the prospective radiographic data. The mean age was 71.3 years. The preoperative mechanical axis was varus, 11.2 degrees. The type and severity of medial tibial bone resorption were categorized as type U (resorption under the tibial baseplate up to 50% [U1] or beyond 50% [U2] of medial tibial tray width), C (resorption around the penetrated cement under the baseplate), and M (resorption on the medial tibial cortex without extension to the baseplate). Bone resorption of medial proximal tibia was observed in 96 knees (19.2%). Types U1 and U2 were seen in 46 and 28 knees, respectively. Type C was observed in 12 knees and type M in 10 knees. The type U resorption group had significantly more preoperative varus deformity (varus 12.9 vs. 10.9 degrees, p\u2009=\u20090.017). Medial tibial bone resorption after TKAs using a thick cobalt chromium baseplate is not uncommon and has various locations, types, and severities. The medial tibial bone resorption might be related to various causes, including stress shielding, thermal necrosis from cement in the bony hole, and bony devascularization. The type-U resorption has to be closely observed in patients with preoperative severe varus deformity. This is a Level IV study.<\/jats:p>","DOI":"10.1055\/s-0040-1715085","type":"journal-article","created":{"date-parts":[[2020,8,24]],"date-time":"2020-08-24T22:56:02Z","timestamp":1598309762000},"page":"434-442","source":"Crossref","is-referenced-by-count":7,"title":["Various Types of Medial Tibial Bone Resorption after Total Knee Arthroplasty Using a Thick Cobalt Chromium Tibial Baseplate"],"prefix":"10.1055","volume":"35","author":[{"given":"Sang Jun","family":"Song","sequence":"additional","affiliation":[{"name":"Department of Orthopaedic Surgery, College of Medicine, Kyung Hee University, Seoul, Korea (the Republic of)"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Hyun Woo","family":"Lee","sequence":"additional","affiliation":[{"name":"Department of Orthopaedic Surgery, College of Medicine, Kyung Hee University, Seoul, Korea (the Republic of)"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Se Gu","family":"Kang","sequence":"additional","affiliation":[{"name":"Department of Orthopaedic Surgery, College of Medicine, Kyung Hee University, Seoul, Korea (the Republic of)"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Dae Kyung","family":"Bae","sequence":"additional","affiliation":[{"name":"Department of Orthopaedic Surgery, Seoul Sacred Heart General Hospital, Seoul, Korea (the Republic of)"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-8297-6872","authenticated-orcid":false,"given":"Cheol Hee","family":"Park","sequence":"additional","affiliation":[{"name":"Department of Orthopaedic Surgery, College of Medicine, Kyung Hee University, Seoul, Korea (the Republic of)"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"194","published-online":{"date-parts":[[2020,8,24]]},"reference":[{"issue":"01","key":"ref1","doi-asserted-by":"crossref","first-page":"31","DOI":"10.5792\/ksrr.18.049","article-title":"Component alignment in simultaneous bilateral versus unilateral total knee arthroplasty","volume":"31","author":"I Qadir","year":"2019","journal-title":"Knee Surg Relat Res"},{"issue":"01","key":"ref2","doi-asserted-by":"crossref","first-page":"22","DOI":"10.1186\/s43019-020-00041-8","article-title":"Risk factors of uncontrolled periprosthetic knee joint infection after two-stage reimplantation","volume":"32","author":"D-H Kim","year":"2020","journal-title":"Knee Surg Relat Res"},{"issue":"02","key":"ref3","doi-asserted-by":"crossref","first-page":"244","DOI":"10.1016\/j.artd.2017.10.005","article-title":"Proximal tibial resorption in a modern total knee prosthesis","volume":"4","author":"J T Deen","year":"2017","journal-title":"Arthroplast Today"},{"issue":"03","key":"ref4","doi-asserted-by":"crossref","first-page":"136","DOI":"10.1302\/2046-3758.83.BJJ-2018-0102.R2","article-title":"Analysis of the Attune tibial tray backside: a comparative retrieval study","volume":"8","author":"A Cerquiglini","year":"2019","journal-title":"Bone Joint Res"},{"issue":"07","key":"ref5","doi-asserted-by":"crossref","first-page":"1860","DOI":"10.1007\/s11999-012-2248-0","article-title":"Knee wear measured in retrievals: a polished tray reduces insert wear","volume":"470","author":"D J Berry","year":"2012","journal-title":"Clin Orthop Relat Res"},{"issue":"04","key":"ref6","doi-asserted-by":"crossref","first-page":"1310","DOI":"10.1016\/j.arth.2016.11.025","article-title":"Femoral implant design modification decreases the incidence of patellar crepitus in total knee arthroplasty","volume":"32","author":"J R Martin","year":"2017","journal-title":"J Arthroplasty"},{"key":"ref7","doi-asserted-by":"crossref","first-page":"26","DOI":"10.1186\/1749-799X-4-26","article-title":"Can medio-lateral baseplate position and load sharing induce asymptomatic local bone resorption of the proximal tibia? 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Kim","year":"2016","journal-title":"Clin Orthop Relat Res"},{"issue":"04","key":"ref11","doi-asserted-by":"crossref","first-page":"199","DOI":"10.5792\/ksrr.2015.27.4.199","article-title":"Are Korean patients different from other ethnic groups in total knee arthroplasty?","volume":"27","author":"D K Kim","year":"2015","journal-title":"Knee Surg Relat Res"},{"issue":"08","key":"ref12","doi-asserted-by":"crossref","first-page":"493","DOI":"10.1136\/ard.56.8.493","article-title":"Radiographic osteoarthritis of the knee classified by the Ahlb\u00e4ck and Kellgren & Lawrence systems for the tibiofemoral joint in people aged 35-54 years with chronic knee pain","volume":"56","author":"I F Petersson","year":"1997","journal-title":"Ann Rheum Dis"},{"issue":"12","key":"ref13","doi-asserted-by":"crossref","first-page":"2154","DOI":"10.1016\/j.arth.2015.06.012","article-title":"WOMAC, EQ-5D and Knee Society score thresholds for treatment success after total knee arthroplasty","volume":"30","author":"J M Giesinger","year":"2015","journal-title":"J Arthroplasty"},{"issue":"04","key":"ref14","doi-asserted-by":"crossref","first-page":"326","DOI":"10.5792\/ksrr.18.028","article-title":"Reliability and validity of the femorotibial mechanical axis angle in primary total knee arthroplasty: navigation versus weight bearing or supine whole leg radiographs","volume":"30","author":"S H Kim","year":"2018","journal-title":"Knee Surg Relat Res"},{"key":"ref15","doi-asserted-by":"crossref","first-page":"15","DOI":"10.1186\/s43019-019-0023-1","article-title":"The influence of computer-assisted surgery experience on the accuracy and precision of the postoperative mechanical axis during computer-assisted lateral closing-wedge high tibial osteotomy","volume":"31","author":"H W Lee","year":"2019","journal-title":"Knee Surg Relat Res"},{"issue":"248","key":"ref16","first-page":"9","article-title":"The Knee Society total knee arthroplasty roentgenographic evaluation 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component in primary total knee replacement","volume":"95-B","author":"D T Cawley","year":"2013","journal-title":"Bone Joint J"},{"issue":"01","key":"ref23","doi-asserted-by":"crossref","first-page":"304","DOI":"10.1007\/s11999-013-3248-4","article-title":"Loss of cement-bone interlock in retrieved tibial components from total knee arthroplasties","volume":"472","author":"M A Miller","year":"2014","journal-title":"Clin Orthop Relat Res"},{"issue":"12","key":"ref24","doi-asserted-by":"crossref","first-page":"2799","DOI":"10.1002\/jor.23600","article-title":"Assessment of thermal damage in total knee arthroplasty using an osteocyte injury model","volume":"35","author":"K Kurata","year":"2017","journal-title":"J Orthop Res"},{"issue":"07","key":"ref25","doi-asserted-by":"crossref","first-page":"1465","DOI":"10.1016\/j.arth.2016.01.006","article-title":"An algorithmic, pie-crusting medial soft tissue release reduces the need for constrained inserts patients with severe varus deformity 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