An Experimental Model for Kinematic Analysis of the Knee

Tibio-femoral kinematics in different total knee arthroplasty designs during a loaded squat: A numerical sensitivity study

“…The theoretical range of IE rotation for the fixed bearing PS design in our study was predicted to be 41, close to Nakamura et al (2010) (1.872.01) and Victor et al (2005) (51), while for the high-flex design we are in agreement with Most (2004). Analyzing the fixed bearing guided motion TKA, we could find studies (Victor et al, 2010Bellemans et al, 2002) where the measured range of AP translation (2072 mm, 2272 mm, and 23.6 72.9 mm respectively) was similar to ours (20.32 mm). The results obtained for the high flex design are in agreement with Victor et al (2009).…”

Anteroposterior Laxity After Bicruciate-Retaining Total Knee Arthroplasty Is Closer to the Native Knee Than ACL-Resecting TKA: A Biomechanical Cadaver Study

“…Lack of the screw-home mechanism post TKA has also been noted in other studies [19,28,29]; the fact that it was also eliminated in a TKA that retains the ACL perhaps confirms that this movement occurs due to a combination of the geometrical characteristics of the tibiofemoral joint [30] and the actions of the cruciate ligaments [31]. It has been previously demonstrated in-vitro that a BCR TKA has kinematics closer to the intact knee than an ACL sacrificing TKA, although stability was not examined in that study [15].…”

“…There is in vivo evidence of a satisfaction and function gap between unicompartmental knee arthroplasty (UKA) and TKA patients [10,11], and also that a bi-cruciate retaining (BCR) TKA (that keeps both the PCL and ACL) can improve replaced knee motion and corresponding patient satisfaction compared to conventional TKA [12][13][14]. However, these devices have only once been evaluated mechanically [15] and they have seldom been used clinically beyond their surgeon-inventors. One example of such is a new device, developed by Biomet (Warsaw, IN, USA), which is being used in clinical trials [16,17].…”

Contact forces in several TKA designs during squatting: A numerical sensitivity analysis

“…The loaded squat was reproduced numerically, simulating an existing knee kinematics rig (Maletsky, 1999;Victor et al, 2009cVictor et al, , 2010 in terms of geometries, constraints, inputs and outputs. The simulated machine and its function and constraints are shown in Fig.…”