All design s demonstrated posterior – femoral translation and external rotation in kneeling , but posterior-stabilised design s were more posterior at maximal flexion when compared to cruciate retaining .
Modern  TKR prostheses are design ed to restore healthy kinematics including high flexion .
Kneeling is a dem and ing high-flexion activity .
There have been many studies of kneeling kinematics using a plethora of implant design s but no comprehensive comparisons .
Visualisation of contact patterns allows for quantification and comparison of knee kinematics .
The aim of this systematic review was to determine whether there are any differences in the kinematics of kneeling as a function of TKR design .
Does ligament balancing technique affect kinematics in rotating platform, PCL retaining knee arthroplasties?
The goal of this prospect i ve , r and omized , blinded trial was to determine if ligament balancing techniques for rotating platform TKA affect postoperative knee kinematics .  Sixteen patients with unilateral rotating platform TKA consented to participate in this institutional review board approved study . Eight patients were r and omly selected to receive ligament balancing with an instrumented joint spreader device and eight patients received ligament balancing using fixed thickness spacer blocks .  A single plane shape matching technique was used for kinematic analysis of static deep knee flexion and dynamic stair activities . There were no differences in knee kinematics between groups during static deep flexion activities . The spreader group demonstrated kinematics more similar to the normal knee during the ascending phase of the dynamic stair activity . Knee kinematics in static knee flexion were unaffected by ligament balancing technique , while knees balanced with the spreader demonstrated a medial pivot motion pattern during stair ascent . This medial pivot motion pattern may improve long-term results by more closely replicating normal knee kinematics
All design s demonstrated posterior – femoral translation and external rotation in kneeling , but posterior-stabilised design s were more posterior at maximal flexion when compared to cruciate retaining .
Modern  TKR prostheses are design ed to restore healthy kinematics including high flexion .
Kneeling is a dem and ing high-flexion activity .
There have been many studies of kneeling kinematics using a plethora of implant design s but no comprehensive comparisons .
Visualisation of contact patterns allows for quantification and comparison of knee kinematics .
The aim of this systematic review was to determine whether there are any differences in the kinematics of kneeling as a function of TKR design .