Dynamic in vitro measurement of patellar movement after total knee arthroplasty: an in vitro study

Abstract

Background: Changing the kinematic behaviour of patellar movement could be one of the reasons for anterior knee pain after implantation of a total knee arthroplasty (TKA). The aim of the current study was to measure the potential influence on patellar kinematics of patellar resurfacing during TKA.

Patellar resurfacing as a second stage procedure for persistent anterior knee pain after primary total knee arthroplasty

“…Several reports have been published with similar clinical and functional outcomes, with or without patellar resurfacing [1,5,20,21]. In addition, several complications after resurfacing such as patella fracture, dislocation or avascular necrosis have been reported [3].…”

A new in vivo technique for determination of femoro-tibial and femoro-patellar 3D kinematics in total knee arthroplasty

“…These conditions like cadaver models or computer simulations (Chen et al, 2005;Most et al, 2005;Ostermeier et al, 2005) and of course different in vivo techniques like external marker systems, gait analysis and the fluoroscopy Nagura et al, 2005;Smith et al, 2006). The latter allows quantification of femoro-tibial kinematics under almost physiologic, weightbearing conditions with a considerable degree of accuracy.…”

Computational Modelling of Patella Femoral Kinematics During Gait Cycle and Experimental Validation

“…The AP displacement was found to be approximately 7mm in the literature [12] as compared to 5 mm displacement in the current study ( Figure 3). …”

“…Ostermeier and co-authors [12] A comparison of current gait cycle study with constrained ML displacement defined as condition 1 was made with previous investigations of Halloran et al…”

“…Hence, the effect of loading and boundary conditions on patellar mechanics is important. In the past, the patellar mechanics have been investigated in vivo using magnetic devices [10], motion analyses [11][12] and photographic devices [13][14]. All these investigations were performed in knee joint for flexion angle above 90 o .…”