Show simple item record

Optimierung der Rotationsausrichtung der femoralen Implantatkomponente in der Kniegelenksendoprothetik mit bandspannungsbasierter Navigation

dc.contributor.advisorFrosch, Karl-Heinz Prof. Dr.
dc.contributor.authorBussert, Jens Joachim
dc.titleOptimierung der Rotationsausrichtung der femoralen Implantatkomponente in der Kniegelenksendoprothetik mit bandspannungsbasierter Navigationde
dc.title.translatedOptimized femoral component rotation in total knee arthroplasty with ligament tension-based navigationde
dc.contributor.refereeWalde, Tim Alexander PD Dr.
dc.description.abstractengFemoral malrotation in total knee arthroplasty is correlated to an increased number of revisions. Bony landmarks such as Whiteside line, posterior condyle axis and transepicondylar axis are used for determining femoral component rotation. The femoral rotation achieved with the bony landmarks is compared to the femoral rotation achieved by a navigated ligament tension-based tibia-first technique. Ninety-three consecutive patients with gonarthritis were prospectively enrolled. Intraoperatively the bony landmarks for femoral rotation and the achieved femoral rotation using a navigated tension-based tibia-first technique were determined and stored for further comparison. A pre- and postoperative functional diagram displaying the extension and flexion and varus or valgus position was also part of evaluation. Using bony landmarks the rotational errors ranged from 12.2° of internal rotation to 15.5° of external rotation from parallel to the tibial resection surface at 90° flexion. A statistical significant improved femoral rotation was achieved using the ligament tension-based method with a rotational error ranged from 3.0° of internal rotation to 2.4° of external rotation. The functional analyses demonstrated statistical significant lower varus/ valgus deviations within the flexion range and an improved maximum varus deviation at 90° flexion using the ligament tension-based method. Compared to the bony landmarks a balanced, almost parallel flexion gap was achieved using a navigation technique taking the ligament tension of the knee joint into account. As a result the improved femoral rotation was demonstrated by the functional evaluation. Unilateral overloading of the polyethylene inlay and unilateral instability can thus be
dc.contributor.coRefereeKlinger, Hans-Michael Prof. Dr.
dc.subject.gerFemorale Rotationde
dc.subject.gerKnöcherne Landmarkende
dc.subject.engFemoral rotationde
dc.subject.engLigament tensionde
dc.subject.engTotal knee arthroplastyde
dc.subject.engBony landmarksde
dc.affiliation.instituteMedizinische Fakultätde
dc.subject.gokfullMedizin (PPN619874732)de
dc.subject.gokfullOrthopädie (PPN619876204)de

Files in this item


This item appears in the following Collection(s)

Show simple item record