CPAK classification detect the real knee joint apex position in less than half of the knees

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dc.authoridŞahbat, Yavuz/0000-0002-9963-5334
dc.authoridGulagaci, Firat/0009-0004-5982-4925
dc.authoridAn, Jae-Sung/0009-0006-4975-2600
dc.authorwosidŞahbat, Yavuz/GXF-0361-2022
dc.contributor.authorSahbat, Yavuz
dc.contributor.authorChou, Te-feng Arthur
dc.contributor.authorAn, Jae-Sung
dc.contributor.authorGulagaci, Firat
dc.contributor.authorOllivier, Matthieu
dc.date.accessioned2024-06-12T10:58:34Z
dc.date.available2024-06-12T10:58:34Z
dc.date.issued2024
dc.departmentTrakya Üniversitesien_US
dc.description.abstractPurpose: Accurate assessment of the knee joint line is essential for surgeries involving the knee. The knee joint line obliquity (KJLO) is a radiological measurement that evaluates the position of the knee joint relative to the ground and is frequently used in preoperative planning and clinical follow-up. On the other hand, coronal plane alignment of the knee (CPAK) classifications assesses the joint line as the summation of the medial proximal tibial angle (MPTA) and mechanical lateral distal femoral angle (mLDFA). The purpose of this study is to determine the concordance of these two measurement techniques. Methods: This cross-sectional study evaluated the long-leg standing radiographs (LSRs) of 164 healthy knees. The extremity KJLO and CPAK classification JLO were measured twice by two observers at 8-week intervals. The knee joint line apex positions (proximal, neutral and distal) of the two measurement techniques are compared (concordance or discordant). The intraobserver and interobserver reliability were examined using the intraclass correlation coefficient (ICC). Possible causes of the discordant were evaluated with univariate and multivariate logistic regression analysis. Results: CPAK classification detected the KJLO apex position in 70 extremities (42.7%) only. Subgroups CPAK JLO detected 13.6% of the proximal apex, 20.4% of the neutral, and 90.7% of the distal apex (p < 0.01). Upon multivariate logistic regression analysis, the variable KJLO apex position (proximal, neutral vs. distal, odds ratio (OR) = 10.291, 95% confidence interval [CI] = 2.225-25.656, and (p < 0.01) was determined as a risk factor for discordant. Conclusion: The CPAK JLO measurement technique can be misleading in defining the KJLO apex position and the concordance between them is less than 50%. It has a high tendency to misleadingly predict proximal and neutral apex positions, which can potentially have negative implications for assessing the joint line.en_US
dc.description.sponsorshipNone; Turkish Orthopedic Association (TOTBID)en_US
dc.description.sponsorshipThis comprehensive body of research was the result of a large team of individuals that have helped contribute to the data collection and literature research. We would like to thank the Turkish Orthopedic Association (TOTBID) for the Educational Scholarship for MEB. The authors have no funding to report.en_US
dc.identifier.doi10.1002/ksa.12175
dc.identifier.issn0942-2056
dc.identifier.issn1433-7347
dc.identifier.pmid38613184en_US
dc.identifier.scopus2-s2.0-85190786789en_US
dc.identifier.scopusqualityQ1en_US
dc.identifier.urihttps://doi.org/10.1002/ksa.12175
dc.identifier.urihttps://hdl.handle.net/20.500.14551/20103
dc.identifier.wosWOS:001201737800001en_US
dc.identifier.wosqualityN/Aen_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.indekslendigikaynakPubMeden_US
dc.language.isoenen_US
dc.publisherSpringeren_US
dc.relation.ispartofKnee Surgery Sports Traumatology Arthroscopyen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.subjectCoronal Plane Alignment Of The Knee (CPAK) Classificationen_US
dc.subjectJoint Line Orientation Angle (JLOA)en_US
dc.subjectKnee Joint Line Obliquity (KJLO)en_US
dc.subjectMechanical Alignmenten_US
dc.subjectMedial Proximal Tibial Angleen_US
dc.subjectCoronal Plane Alignmenten_US
dc.subjectLine Orientationen_US
dc.subjectObliquityen_US
dc.titleCPAK classification detect the real knee joint apex position in less than half of the kneesen_US
dc.typeArticleen_US

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