Posterior Tibial Slope Effect On Range Of Flexion In Cruciate Retaining And Posterior Stabilizing Knee
Journal Title: Punjab Orthopaedic Journal - Year 2018, Vol 0, Issue 0
Abstract
Introduction -Range ofmotion, along withrelief from pain,is an important measure ofthe success of a total knee arthroplasty. Numerous studies have evaluated the effect of various factors on post-operative range of movement with the most consistent predictorbeingthepre-operativerangeofmovement.OnefactorinensuringgoodfunctionafterTKRismaintenanceofaposterior tibialslopeof5°to10°followingimplantationofaprosthesis.Numerousreportshavesuggestedthatalargerposteriortibial slope improves post-operative range of movement, but clinical studies have not alwaysborne this out.Most series report on cruciateretainingTKRsandtherearefewstudiesontheoptimaltibialsloperequiredinposterior stabilizedTKRtoensureamaximalrange oflexion.Conclusionsdrawn fromcruciate-retainingdesignsshouldnotbeextrapolated toposterior-stabilizeddesigns,asthere arefundamentaldifferences inkinematicsandsoft-tissuebalancingbetweenthem. Objective -To evaluate thecorrelationbetween the posterior tibialslope andrange oflexionin bothcruciate retaining and posterior stabilizing TKR. Method-Overatwomonthsperiodtotalof39patientsunderwent50primaryTKRswereprospectivelyrecorded.Thesepatients werefollowedupforthreemonths.Alloperationswereperformedforosteoarthritis;patientswithotherdiagnoseswereexcluded from the study. A post-operative lateral radiograph ofthe operated knee was obtained at three months and range of lexion and posterior tibial sloperecorded.Thesearedividedinto2groupsofCruciateRetainingandPosterior StabilizingTKR.Eachgroup is sub-dividedaccording to theposterior tibial slope angle i.e.<30,40-70and>70. Result - The mean post-operative lexion was increasing as the Posterior Tibial Slope increases in both Cruciate Retaining and PosteriorStabilizing.
Authors and Affiliations
Avtar Singh, Sushant Verma, Neelesh Damani
Keywords
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