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Orthopaedic Proceedings
Vol. 102-B, Issue SUPP_9 | Pages 15 - 15
1 Oct 2020
AXIAL ROTATION FEATURES OF THE KNEE DURING IN VIVO FUNCTIONAL ACTIVITIES
Li G Zhou C Rao Z Bedair H
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Introduction

Medial pivoting motion of the knee has been widely assumed in total knee arthroplasty (TKA) research, but was not consistently observed in recent studies of in vivo knee motion. This study investigated the in vivo motion characters of the knee by analyzing the axial tibial rotation and tibiofemoral articular contact motion during a weightbearing flexion and a treadmill gait.

Methods

In vivo kinematics of eight living human knees during a weightbearing flexion and a treadmill gait was determined using a combined MRI and dual fluoroscopic imaging system technique. The axial tibial rotation and the tibiofemoral cartilage contact point motion on both the tibial plateau and femoral condyle surfaces were analyzed.

Bone & Joint Research
Vol. 6, Issue 9 | Pages 535 - 541
1 Sep 2017
Release of the tourniquet immediately after the implantation of the components reduces the incidence of deep vein thrombosis after primary total knee arthroplasty
Zan P Mol MO Yao JJ Fan L Yang D Liu K Li G
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Objectives

The length of the tourniquet time during total knee arthroplasty (TKA) is related to the incidence of post-operative deep vein thrombosis (DVT). Our aim in this study was to investigate the effect of the early release of the tourniquet on the incidence of DVT in patients undergoing TKA.

Methods

A total of 200 patients who underwent TKA between November 2015 and November 2016 were prospectively enrolled. The tourniquet was inflated before surgery and released immediately after the introduction of the components (early release group). This group was compared with a retrospective cohort of 200 primary TKAs, in which the tourniquet was released after the dressings had been applied (late release group). The presence of a DVT was detected using bilateral lower limb ultrasonography. Peri-operative clinical and follow-up data were collected for analysis.