{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,26]],"date-time":"2026-09-26T04:50:25Z","timestamp":1790398225378,"version":"4.1.0"},"reference-count":29,"publisher":"Wiley","issue":"5","license":[{"start":{"date-parts":[[2018,6,2]],"date-time":"2018-06-02T00:00:00Z","timestamp":1527897600000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"},{"start":{"date-parts":[[2018,6,2]],"date-time":"2018-06-02T00:00:00Z","timestamp":1527897600000},"content-version":"tdm","delay-in-days":0,"URL":"http:\/\/www.springer.com\/tdm"}],"funder":[{"name":"Corin Ltd"},{"name":"Corin-Tornier"},{"name":"ReSurg SA"},{"name":"DePuy-Synthes"}],"content-domain":{"domain":["link.springer.com"],"crossmark-restriction":false},"short-container-title":["Knee surg. sports traumatol. arthrosc."],"published-print":{"date-parts":[[2019,5]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:sec><jats:title>Purpose<\/jats:title><jats:p>Numerous studies demonstrated that prosthetic overhang and over\u2010sizing cause pain and stiffness following total knee arthroplasty (TKA), but none considered volume changes within the joint capsule. This study was designed to investigate differences in volumes of resected bone compared to implanted components in TKA, and to determine the incidence and factors related to \u2018over\u2010voluming\u2019.<\/jats:p><\/jats:sec><jats:sec><jats:title>Methods<\/jats:title><jats:p>Three\u2010dimensional reconstructions were created from 100\u00a0magnetic resonance imaging scans taken to design patient\u2010specific instruments for TKA. The preoperative simulations were used to calculate the volume ratio (VR) by dividing volume of planned components by that of planned bone resections. Uni\u2010 and multi\u2010variable linear regressions were performed to determine associations between \u2018over\u2010voluming\u2019 (VR\u2009&gt;\u20091.0) and gender, implant size and version (standard versus narrow), osteophytes, resection levels, external rotation of the femoral component, hip\u2013knee\u2013ankle (HKA) angle, mechanical lateral distal femoral angle (mLDFA), and mechanical medial proximal tibial angle (mMPTA).<\/jats:p><\/jats:sec><jats:sec><jats:title>Results<\/jats:title><jats:p>The overall implant\/bone volume ratio was 0.91\u2009\u00b1\u20090.11 (range 0.63\u20131.16) with \u2018over\u2010voluming\u2019 observed in 24\u00a0knees. Multi\u2010variable regression confirmed over\u2010voluming to be associated with lower mLDFA (OR 0.66; CI 0.45\u20130.93; <jats:italic>p<\/jats:italic>\u2009=\u20090.026) and extensive osteophytes (OR 0.14; CI 0.03\u20130.61; <jats:italic>p<\/jats:italic>\u2009=\u20090.014), but not HKA angle (OR 0.98; CI 0.76\u20131.26; <jats:italic>p<\/jats:italic>\u2009=\u2009n.s.).<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusions<\/jats:title><jats:p>Over\u2010voluming was observed in 24% of knees, in which the implant volume exceeded the resected volume by up to 16%. Over\u2010voluming was associated with intra\u2010articular femoral valgus (low mLDFA), but not directly associated with tibial deformity (mMPTA) or HKA angle. Over\u2010voluming could be associated with prosthetic overhang or excessive tensions within the joint capsule, and, therefore, contribute to unexplained pain and stiffness following TKA.<\/jats:p><\/jats:sec><jats:sec><jats:title>Level of evidence<\/jats:title><jats:p>IV, Retrospective cohort study.<\/jats:p><\/jats:sec>","DOI":"10.1007\/s00167-018-4998-z","type":"journal-article","created":{"date-parts":[[2018,6,2]],"date-time":"2018-06-02T05:03:11Z","timestamp":1527915791000},"page":"1544-1551","update-policy":"https:\/\/doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":13,"title":["Over\u2010voluming predicted by pre\u2010operative planning in 24% of total knee arthroplasty"],"prefix":"10.1002","volume":"27","author":[{"given":"Simon","family":"Marmor","sequence":"first","affiliation":[{"name":"<!--<label>1<\/label>--> Department of Orthopaedic Surgery Croix\u2010Saint\u2010Simon Teaching Hospital Paris 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ER is employee of Employee of Corin-Tornier (France). JV and MS received fees for support in study design and manuscript preparation from ReSurg SA (Switzerland).","order":2,"name":"Ethics","group":{"name":"EthicsHeading","label":"Conflict of interest"}},{"value":"All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional and\/or national research committee and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards.","order":3,"name":"Ethics","group":{"name":"EthicsHeading","label":"Ethical approval"}},{"value":"For this type of study formal consent is not required.","order":4,"name":"Ethics","group":{"name":"EthicsHeading","label":"Informed consent"}}]}}