Erschienen in:
01.08.2007 | Knee
Influence of intra-operative joint gap on post-operative flexion angle in osteoarthritis patients undergoing posterior-stabilized total knee arthroplasty
verfasst von:
Tomoyuki Matsumoto, Kiyonori Mizuno, Hirotsugu Muratsu, Nobuhiro Tsumura, Naomasa Fukase, Seiji Kubo, Shinichi Yoshiya, Masahiro Kurosaka, Ryosuke Kuroda
Erschienen in:
Knee Surgery, Sports Traumatology, Arthroscopy
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Ausgabe 8/2007
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Abstract
Recently, we developed a new tensor for total knee arthroplasty (TKA) procedures enabling soft tissue balance assessment throughout the range of motion while reproducing post-operative joint alignment with the patello-femoral (PF) joint reduced and the tibiofemoral joint aligned. Using the tensor with a computer-assisted navigation system, we investigated the relationship between various intra-operative joint gap values and their post-operative flexion angles. An increased value during the extension to flexion gap and a decreased value during the flexion to deep flexion gap with PF joint reduced, not everted, showed an inverse correlation with post-operative knee flexion angle, not pre-operative flexion angle. In conclusion, understanding the characteristics of joint gap kinematics in posterior-stabilized TKA under physiological and reproducible joint conditions may enable the prediction of the post-operative flexion angle and help to determine the appropriate intra-operative joint gap.